Xen project Mailing List

[xen staging] tools: move libxenctrl below tools/libs

Date: Wed, 09 Sep 2020 11:14:00 +0000

Delivery-date: Wed, 09 Sep 2020 11:14:07 +0000

List-id: "Change log for Mercurial $receive only$" <xen-changelog.lists.xenproject.org>

commit af6c78d9dc68366d0d9a1d41de26f3765dfef5f0 Author: Juergen Gross <jgross@xxxxxxxx> AuthorDate: Fri Aug 28 17:07:34 2020 +0200 Commit: Wei Liu <wl@xxxxxxx> CommitDate: Wed Sep 9 10:57:25 2020 +0000 tools: move libxenctrl below tools/libs Today tools/libxc needs to be built after tools/libs as libxenctrl is depending on some libraries in tools/libs. This in turn blocks moving other libraries depending on libxenctrl below tools/libs. So carve out libxenctrl from tools/libxc and move it into tools/libs/ctrl. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> (stubdom parts) Acked-by: Marek Marczykowski-GÃ³recki <marmarek@xxxxxxxxxxxxxxxxxxxxxx> (python parts) Acked-by: Wei Liu <wl@xxxxxxx> --- .gitignore | 8 + MAINTAINERS | 2 +- stubdom/Makefile | 9 +- stubdom/grub/Makefile | 4 +- stubdom/mini-os.mk | 2 +- tools/Rules.mk | 8 +- tools/libs/Makefile | 1 + tools/libs/ctrl/Makefile | 72 + tools/libs/ctrl/include/xenctrl.h | 2668 ++++++++++++++++++++++++++++++ tools/libs/ctrl/include/xenctrl_compat.h | 183 ++ tools/libs/ctrl/include/xenctrl_dom.h | 455 +++++ tools/libs/ctrl/xc_altp2m.c | 436 +++++ tools/libs/ctrl/xc_arinc653.c | 87 + tools/libs/ctrl/xc_bitops.h | 79 + tools/libs/ctrl/xc_core.c | 1008 +++++++++++ tools/libs/ctrl/xc_core.h | 176 ++ tools/libs/ctrl/xc_core_arm.c | 122 ++ tools/libs/ctrl/xc_core_arm.h | 59 + tools/libs/ctrl/xc_core_x86.c | 223 +++ tools/libs/ctrl/xc_core_x86.h | 60 + tools/libs/ctrl/xc_cpu_hotplug.c | 74 + tools/libs/ctrl/xc_cpupool.c | 219 +++ tools/libs/ctrl/xc_csched.c | 109 ++ tools/libs/ctrl/xc_csched2.c | 109 ++ tools/libs/ctrl/xc_devicemodel_compat.c | 147 ++ tools/libs/ctrl/xc_domain.c | 2205 ++++++++++++++++++++++++ tools/libs/ctrl/xc_evtchn.c | 85 + tools/libs/ctrl/xc_evtchn_compat.c | 75 + tools/libs/ctrl/xc_flask.c | 450 +++++ tools/libs/ctrl/xc_foreign_memory.c | 98 ++ tools/libs/ctrl/xc_freebsd.c | 71 + tools/libs/ctrl/xc_gnttab.c | 161 ++ tools/libs/ctrl/xc_gnttab_compat.c | 111 ++ tools/libs/ctrl/xc_hcall_buf.c | 190 +++ tools/libs/ctrl/xc_kexec.c | 152 ++ tools/libs/ctrl/xc_linux.c | 77 + tools/libs/ctrl/xc_mem_access.c | 110 ++ tools/libs/ctrl/xc_mem_paging.c | 130 ++ tools/libs/ctrl/xc_memshr.c | 289 ++++ tools/libs/ctrl/xc_minios.c | 67 + tools/libs/ctrl/xc_misc.c | 999 +++++++++++ tools/libs/ctrl/xc_monitor.c | 257 +++ tools/libs/ctrl/xc_msr_x86.h | 37 + tools/libs/ctrl/xc_netbsd.c | 74 + tools/libs/ctrl/xc_pagetab.c | 113 ++ tools/libs/ctrl/xc_physdev.c | 113 ++ tools/libs/ctrl/xc_pm.c | 455 +++++ tools/libs/ctrl/xc_private.c | 781 +++++++++ tools/libs/ctrl/xc_private.h | 479 ++++++ tools/libs/ctrl/xc_psr.c | 395 +++++ tools/libs/ctrl/xc_resource.c | 151 ++ tools/libs/ctrl/xc_resume.c | 288 ++++ tools/libs/ctrl/xc_rt.c | 132 ++ tools/libs/ctrl/xc_solaris.c | 43 + tools/libs/ctrl/xc_tbuf.c | 172 ++ tools/libs/ctrl/xc_vm_event.c | 183 ++ tools/libs/uselibs.mk | 2 + tools/libxc/Makefile | 109 +- tools/libxc/include/xenctrl.h | 2668 ------------------------------ tools/libxc/include/xenctrl_compat.h | 183 -- tools/libxc/include/xenctrl_dom.h | 455 ----- tools/libxc/xc_altp2m.c | 436 ----- tools/libxc/xc_arinc653.c | 87 - tools/libxc/xc_bitops.h | 79 - tools/libxc/xc_core.c | 1008 ----------- tools/libxc/xc_core.h | 176 -- tools/libxc/xc_core_arm.c | 122 -- tools/libxc/xc_core_arm.h | 59 - tools/libxc/xc_core_x86.c | 223 --- tools/libxc/xc_core_x86.h | 60 - tools/libxc/xc_cpu_hotplug.c | 74 - tools/libxc/xc_cpupool.c | 219 --- tools/libxc/xc_csched.c | 109 -- tools/libxc/xc_csched2.c | 109 -- tools/libxc/xc_devicemodel_compat.c | 147 -- tools/libxc/xc_domain.c | 2205 ------------------------ tools/libxc/xc_evtchn.c | 85 - tools/libxc/xc_evtchn_compat.c | 75 - tools/libxc/xc_flask.c | 450 ----- tools/libxc/xc_foreign_memory.c | 98 -- tools/libxc/xc_freebsd.c | 71 - tools/libxc/xc_gnttab.c | 161 -- tools/libxc/xc_gnttab_compat.c | 111 -- tools/libxc/xc_hcall_buf.c | 190 --- tools/libxc/xc_kexec.c | 152 -- tools/libxc/xc_linux.c | 77 - tools/libxc/xc_mem_access.c | 110 -- tools/libxc/xc_mem_paging.c | 130 -- tools/libxc/xc_memshr.c | 289 ---- tools/libxc/xc_minios.c | 67 - tools/libxc/xc_misc.c | 999 ----------- tools/libxc/xc_monitor.c | 257 --- tools/libxc/xc_msr_x86.h | 37 - tools/libxc/xc_netbsd.c | 74 - tools/libxc/xc_pagetab.c | 113 -- tools/libxc/xc_physdev.c | 113 -- tools/libxc/xc_pm.c | 455 ----- tools/libxc/xc_private.c | 781 --------- tools/libxc/xc_private.h | 479 ------ tools/libxc/xc_psr.c | 395 ----- tools/libxc/xc_resource.c | 151 -- tools/libxc/xc_resume.c | 288 ---- tools/libxc/xc_rt.c | 132 -- tools/libxc/xc_solaris.c | 43 - tools/libxc/xc_tbuf.c | 172 -- tools/libxc/xc_vm_event.c | 183 -- tools/ocaml/xenstored/Makefile | 2 +- tools/python/Makefile | 2 +- tools/python/setup.py | 8 +- 109 files changed, 15268 insertions(+), 15275 deletions(-) diff --git a/.gitignore b/.gitignore index 823f4743dc..d22b031ed2 100644 --- a/.gitignore +++ b/.gitignore @@ -114,6 +114,9 @@ tools/libs/hypfs/headers.chk tools/libs/hypfs/xenhypfs.pc tools/libs/call/headers.chk tools/libs/call/xencall.pc +tools/libs/ctrl/_*.[ch] +tools/libs/ctrl/libxenctrl.map +tools/libs/ctrl/xencontrol.pc tools/libs/foreignmemory/headers.chk tools/libs/foreignmemory/xenforeignmemory.pc tools/libs/devicemodel/headers.chk @@ -195,6 +198,11 @@ tools/include/xen-foreign/*.(c|h|size) tools/include/xen-foreign/checker tools/libvchan/xenvchan.pc tools/libxc/*.pc +tools/libxc/xc_bitops.h +tools/libxc/xc_core.h +tools/libxc/xc_core_arm.h +tools/libxc/xc_core_x86.h +tools/libxc/xc_private.h tools/libxl/_libxl.api-for-check tools/libxl/*.api-ok tools/libxl/*.pc diff --git a/MAINTAINERS b/MAINTAINERS index ffe2310294..26c5382075 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -226,7 +226,7 @@ M: Stewart Hildebrand <stewart.hildebrand@xxxxxxxxxxxxxxx> S: Supported L: xen-devel@xxxxxxxxxxxxxxx F: xen/common/sched/arinc653.c -F: tools/libxc/xc_arinc653.c +F: tools/libs/ctrl/xc_arinc653.c ARM (W/ VIRTUALISATION EXTENSIONS) ARCHITECTURE M: Stefano Stabellini <sstabellini@xxxxxxxxxx> diff --git a/stubdom/Makefile b/stubdom/Makefile index f000f56e68..6c481285ec 100644 --- a/stubdom/Makefile +++ b/stubdom/Makefile @@ -331,7 +331,7 @@ endif # libraries under tools/libs ####### -STUB_LIBS := toolcore toollog evtchn gnttab call foreignmemory devicemodel +STUB_LIBS := toolcore toollog evtchn gnttab call foreignmemory devicemodel ctrl ####### # common handling @@ -396,12 +396,11 @@ $(TARGETS_MINIOS): mini-os-%: ####### .PHONY: libxc -libxc: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a libxc-$(XEN_TARGET_ARCH)/libxenguest.a -libxc-$(XEN_TARGET_ARCH)/libxenctrl.a: mk-headers-$(XEN_TARGET_ARCH) libxentoollog libxenevtchn libxengnttab libxencall libxenforeignmemory libxendevicemodel cross-zlib +libxc: libxc-$(XEN_TARGET_ARCH)/libxenguest.a +libxc-$(XEN_TARGET_ARCH)/libxenguest.a: libxenevtchn libxenctrl cross-zlib +libxc-$(XEN_TARGET_ARCH)/libxenguest.a: mk-headers-$(XEN_TARGET_ARCH) $(NEWLIB_STAMPFILE) CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE) DESTDIR= CONFIG_LIBXC_MINIOS=y -C libxc-$(XEN_TARGET_ARCH) - libxc-$(XEN_TARGET_ARCH)/libxenguest.a: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a - ####### # ioemu ####### diff --git a/stubdom/grub/Makefile b/stubdom/grub/Makefile index 26dff45a8f..d33fa2f71e 100644 --- a/stubdom/grub/Makefile +++ b/stubdom/grub/Makefile @@ -6,7 +6,9 @@ vpath %.c ../grub-upstream BOOT=$(OBJ_DIR)/boot-$(XEN_TARGET_ARCH).o DEF_CPPFLAGS += -I$(XEN_ROOT)/tools/libs/toollog/include -DEF_CPPFLAGS += -I$(XEN_ROOT)/tools/libxc/include -I$(XEN_ROOT)/tools/include -I. +DEF_CPPFLAGS += -I$(XEN_ROOT)/tools/libs/ctrl/include +DEF_CPPFLAGS += -I$(XEN_ROOT)/tools/libxc/include +DEF_CPPFLAGS += -I$(XEN_ROOT)/tools/include -I. DEF_CPPFLAGS += -I../grub-upstream/stage1 DEF_CPPFLAGS += -I../grub-upstream/stage2 DEF_CPPFLAGS += -I../grub-upstream/netboot diff --git a/stubdom/mini-os.mk b/stubdom/mini-os.mk index 32528bb91f..b1387df3f8 100644 --- a/stubdom/mini-os.mk +++ b/stubdom/mini-os.mk @@ -13,5 +13,5 @@ GNTTAB_PATH = $(XEN_ROOT)/stubdom/libs-$(MINIOS_TARGET_ARCH)/gnttab CALL_PATH = $(XEN_ROOT)/stubdom/libs-$(MINIOS_TARGET_ARCH)/call FOREIGNMEMORY_PATH = $(XEN_ROOT)/stubdom/libs-$(MINIOS_TARGET_ARCH)/foreignmemory DEVICEMODEL_PATH = $(XEN_ROOT)/stubdom/libs-$(MINIOS_TARGET_ARCH)/devicemodel -CTRL_PATH = $(XEN_ROOT)/stubdom/libxc-$(MINIOS_TARGET_ARCH) +CTRL_PATH = $(XEN_ROOT)/stubdom/libs-$(MINIOS_TARGET_ARCH)/ctrl GUEST_PATH = $(XEN_ROOT)/stubdom/libxc-$(MINIOS_TARGET_ARCH) diff --git a/tools/Rules.mk b/tools/Rules.mk index 13432560ff..35940cb338 100644 --- a/tools/Rules.mk +++ b/tools/Rules.mk @@ -15,7 +15,6 @@ XEN_INCLUDE = $(XEN_ROOT)/tools/include include $(XEN_ROOT)/tools/libs/uselibs.mk -XEN_libxenctrl = $(XEN_ROOT)/tools/libxc XEN_libxenguest = $(XEN_ROOT)/tools/libxc XEN_libxenlight = $(XEN_ROOT)/tools/libxl # Currently libxlutil lives in the same directory as libxenlight @@ -105,13 +104,10 @@ $(foreach lib,$(LIBS_LIBS),$(eval $(call LIB_defs,$(lib)))) # code which compiles against libxenctrl get __XEN_TOOLS__ and # therefore sees the unstable hypercall interfaces. -CFLAGS_libxenctrl = -I$(XEN_libxenctrl)/include $(CFLAGS_libxentoollog) $(CFLAGS_libxenforeignmemory) $(CFLAGS_libxendevicemodel) $(CFLAGS_xeninclude) -D__XEN_TOOLS__ -SHDEPS_libxenctrl = $(SHLIB_libxentoollog) $(SHLIB_libxenevtchn) $(SHLIB_libxengnttab) $(SHLIB_libxencall) $(SHLIB_libxenforeignmemory) $(SHLIB_libxendevicemodel) -LDLIBS_libxenctrl = $(SHDEPS_libxenctrl) $(XEN_libxenctrl)/libxenctrl$(libextension) -SHLIB_libxenctrl = $(SHDEPS_libxenctrl) -Wl,-rpath-link=$(XEN_libxenctrl) +CFLAGS_libxenctrl += $(CFLAGS_libxentoollog) $(CFLAGS_libxenforeignmemory) $(CFLAGS_libxendevicemodel) -D__XEN_TOOLS__ CFLAGS_libxenguest = -I$(XEN_libxenguest)/include $(CFLAGS_libxenevtchn) $(CFLAGS_libxenforeignmemory) $(CFLAGS_xeninclude) -SHDEPS_libxenguest = $(SHLIB_libxenevtchn) +SHDEPS_libxenguest = $(SHLIB_libxenevtchn) $(SHLIB_libxenctrl) LDLIBS_libxenguest = $(SHDEPS_libxenguest) $(XEN_libxenguest)/libxenguest$(libextension) SHLIB_libxenguest = $(SHDEPS_libxenguest) -Wl,-rpath-link=$(XEN_libxenguest) diff --git a/tools/libs/Makefile b/tools/libs/Makefile index 69cdfb5975..7648ea0e4c 100644 --- a/tools/libs/Makefile +++ b/tools/libs/Makefile @@ -9,6 +9,7 @@ SUBDIRS-y += gnttab SUBDIRS-y += call SUBDIRS-y += foreignmemory SUBDIRS-y += devicemodel +SUBDIRS-y += ctrl SUBDIRS-y += hypfs ifeq ($(CONFIG_RUMP),y) diff --git a/tools/libs/ctrl/Makefile b/tools/libs/ctrl/Makefile new file mode 100644 index 0000000000..ec93fb5b73 --- /dev/null +++ b/tools/libs/ctrl/Makefile @@ -0,0 +1,72 @@ +XEN_ROOT = $(CURDIR)/../../.. +include $(XEN_ROOT)/tools/Rules.mk + +SRCS-y += xc_altp2m.c +SRCS-y += xc_core.c +SRCS-$(CONFIG_X86) += xc_core_x86.c +SRCS-$(CONFIG_ARM) += xc_core_arm.c +SRCS-y += xc_cpupool.c +SRCS-y += xc_domain.c +SRCS-y += xc_evtchn.c +SRCS-y += xc_gnttab.c +SRCS-y += xc_misc.c +SRCS-y += xc_flask.c +SRCS-y += xc_physdev.c +SRCS-y += xc_private.c +SRCS-y += xc_csched.c +SRCS-y += xc_csched2.c +SRCS-y += xc_arinc653.c +SRCS-y += xc_rt.c +SRCS-y += xc_tbuf.c +SRCS-y += xc_pm.c +SRCS-y += xc_cpu_hotplug.c +SRCS-y += xc_resume.c +SRCS-y += xc_vm_event.c +SRCS-y += xc_monitor.c +SRCS-y += xc_mem_paging.c +SRCS-y += xc_mem_access.c +SRCS-y += xc_memshr.c +SRCS-y += xc_hcall_buf.c +SRCS-y += xc_foreign_memory.c +SRCS-y += xc_kexec.c +SRCS-y += xc_resource.c +SRCS-$(CONFIG_X86) += xc_psr.c +SRCS-$(CONFIG_X86) += xc_pagetab.c +SRCS-$(CONFIG_Linux) += xc_linux.c +SRCS-$(CONFIG_FreeBSD) += xc_freebsd.c +SRCS-$(CONFIG_SunOS) += xc_solaris.c +SRCS-$(CONFIG_NetBSD) += xc_netbsd.c +SRCS-$(CONFIG_NetBSDRump) += xc_netbsd.c +SRCS-$(CONFIG_MiniOS) += xc_minios.c +SRCS-y += xc_evtchn_compat.c +SRCS-y += xc_gnttab_compat.c +SRCS-y += xc_devicemodel_compat.c + +CFLAGS += -D__XEN_TOOLS__ +CFLAGS += $(PTHREAD_CFLAGS) +CFLAGS += -include $(XEN_ROOT)/tools/config.h + +# Needed for posix_fadvise64() in xc_linux.c +CFLAGS-$(CONFIG_Linux) += -D_GNU_SOURCE + +LIBHEADER := xenctrl.h xenctrl_compat.h xenctrl_dom.h +PKG_CONFIG := xencontrol.pc +PKG_CONFIG_NAME := Xencontrol + +NO_HEADERS_CHK := y + +include $(XEN_ROOT)/tools/libs/libs.mk + +genpath-target = $(call buildmakevars2header,_paths.h) +$(eval $(genpath-target)) + +$(LIB_OBJS) $(PIC_OBJS): _paths.h + +$(PKG_CONFIG_LOCAL): PKG_CONFIG_INCDIR = $(XEN_libxenctrl)/include +$(PKG_CONFIG_LOCAL): PKG_CONFIG_CFLAGS_LOCAL = $(CFLAGS_xeninclude) + +clean: cleanlocal + +.PHONY: cleanlocal +cleanlocal: + rm -f libxenctrl.map diff --git a/tools/libs/ctrl/include/xenctrl.h b/tools/libs/ctrl/include/xenctrl.h new file mode 100644 index 0000000000..4c89b7294c --- /dev/null +++ b/tools/libs/ctrl/include/xenctrl.h @@ -0,0 +1,2668 @@ +/****************************************************************************** + * xenctrl.h + * + * A library for low-level access to the Xen control interfaces. + * + * Copyright (c) 2003-2004, K A Fraser. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef XENCTRL_H +#define XENCTRL_H + +/* Tell the Xen public headers we are a user-space tools build. */ +#ifndef __XEN_TOOLS__ +#define __XEN_TOOLS__ 1 +#endif + +#include <unistd.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdbool.h> +#include <xen/xen.h> +#include <xen/domctl.h> +#include <xen/physdev.h> +#include <xen/sysctl.h> +#include <xen/version.h> +#include <xen/event_channel.h> +#include <xen/sched.h> +#include <xen/memory.h> +#include <xen/grant_table.h> +#include <xen/hvm/dm_op.h> +#include <xen/hvm/params.h> +#include <xen/xsm/flask_op.h> +#include <xen/kexec.h> +#include <xen/platform.h> + +#include "xentoollog.h" + +#if defined(__i386__) || defined(__x86_64__) +#include <xen/foreign/x86_32.h> +#include <xen/foreign/x86_64.h> +#include <xen/arch-x86/xen-mca.h> +#endif + +#define XC_PAGE_SHIFT 12 +#define XC_PAGE_SIZE (1UL << XC_PAGE_SHIFT) +#define XC_PAGE_MASK (~(XC_PAGE_SIZE-1)) + +#define INVALID_MFN (~0UL) + +/* + * DEFINITIONS FOR CPU BARRIERS + */ + +#define xen_barrier() asm volatile ( "" : : : "memory") + +#if defined(__i386__) +#define xen_mb() asm volatile ( "lock; addl $0,0(%%esp)" : : : "memory" ) +#define xen_rmb() xen_barrier() +#define xen_wmb() xen_barrier() +#elif defined(__x86_64__) +#define xen_mb() asm volatile ( "mfence" : : : "memory") +#define xen_rmb() xen_barrier() +#define xen_wmb() xen_barrier() +#elif defined(__arm__) +#define xen_mb() asm volatile ("dmb" : : : "memory") +#define xen_rmb() asm volatile ("dmb" : : : "memory") +#define xen_wmb() asm volatile ("dmb" : : : "memory") +#elif defined(__aarch64__) +#define xen_mb() asm volatile ("dmb sy" : : : "memory") +#define xen_rmb() asm volatile ("dmb sy" : : : "memory") +#define xen_wmb() asm volatile ("dmb sy" : : : "memory") +#else +#error "Define barriers" +#endif + + +#define XENCTRL_HAS_XC_INTERFACE 1 +/* In Xen 4.0 and earlier, xc_interface_open and xc_evtchn_open would + * both return ints being the file descriptor. In 4.1 and later, they + * return an xc_interface* and xc_evtchn*, respectively - ie, a + * pointer to an opaque struct. This #define is provided in 4.1 and + * later, allowing out-of-tree callers to more easily distinguish + * between, and be compatible with, both versions. + */ + + +/* + * GENERAL + * + * Unless otherwise specified, each function here returns zero or a + * non-null pointer on success; or in case of failure, sets errno and + * returns -1 or a null pointer. + * + * Unless otherwise specified, errors result in a call to the error + * handler function, which by default prints a message to the + * FILE* passed as the caller_data, which by default is stderr. + * (This is described below as "logging errors".) + * + * The error handler can safely trash errno, as libxc saves it across + * the callback. + */ + +typedef struct xc_interface_core xc_interface; + +enum xc_error_code { + XC_ERROR_NONE = 0, + XC_INTERNAL_ERROR = 1, + XC_INVALID_KERNEL = 2, + XC_INVALID_PARAM = 3, + XC_OUT_OF_MEMORY = 4, + /* new codes need to be added to xc_error_level_to_desc too */ +}; + +typedef enum xc_error_code xc_error_code; + + +/* + * INITIALIZATION FUNCTIONS + */ + +/** + * This function opens a handle to the hypervisor interface. This function can + * be called multiple times within a single process. Multiple processes can + * have an open hypervisor interface at the same time. + * + * Note: + * After fork a child process must not use any opened xc interface + * handle inherited from their parent. They must open a new handle if + * they want to interact with xc. + * + * Each call to this function should have a corresponding call to + * xc_interface_close(). + * + * This function can fail if the caller does not have superuser permission or + * if a Xen-enabled kernel is not currently running. + * + * @return a handle to the hypervisor interface + */ +xc_interface *xc_interface_open(xentoollog_logger *logger, + xentoollog_logger *dombuild_logger, + unsigned open_flags); + /* if logger==NULL, will log to stderr + * if dombuild_logger=NULL, will log to a file + */ + +/* + * Note: if XC_OPENFLAG_NON_REENTRANT is passed then libxc must not be + * called reentrantly and the calling application is responsible for + * providing mutual exclusion surrounding all libxc calls itself. + * + * In particular xc_{get,clear}_last_error only remain valid for the + * duration of the critical section containing the call which failed. + */ +enum xc_open_flags { + XC_OPENFLAG_DUMMY = 1<<0, /* do not actually open a xenctrl interface */ + XC_OPENFLAG_NON_REENTRANT = 1<<1, /* assume library is only every called from a single thread */ +}; + +/** + * This function closes an open hypervisor interface. + * + * This function can fail if the handle does not represent an open interface or + * if there were problems closing the interface. In the latter case + * the interface is still closed. + * + * @parm xch a handle to an open hypervisor interface + * @return 0 on success, -1 otherwise. + */ +int xc_interface_close(xc_interface *xch); + +/** + * Return the handles which xch has opened and will use for + * hypercalls, foreign memory accesses and device model operations. + * These may be used with the corresponding libraries so long as the + * xch itself remains open. + */ +struct xencall_handle *xc_interface_xcall_handle(xc_interface *xch); +struct xenforeignmemory_handle *xc_interface_fmem_handle(xc_interface *xch); +struct xendevicemodel_handle *xc_interface_dmod_handle(xc_interface *xch); + +/* + * HYPERCALL SAFE MEMORY BUFFER + * + * Ensure that memory which is passed to a hypercall has been + * specially allocated in order to be safe to access from the + * hypervisor. + * + * Each user data pointer is shadowed by an xc_hypercall_buffer data + * structure. You should never define an xc_hypercall_buffer type + * directly, instead use the DECLARE_HYPERCALL_BUFFER* macros below. + * + * The strucuture should be considered opaque and all access should be + * via the macros and helper functions defined below. + * + * Once the buffer is declared the user is responsible for explicitly + * allocating and releasing the memory using + * xc_hypercall_buffer_alloc(_pages) and + * xc_hypercall_buffer_free(_pages). + * + * Once the buffer has been allocated the user can initialise the data + * via the normal pointer. The xc_hypercall_buffer structure is + * transparently referenced by the helper macros (such as + * xen_set_guest_handle) in order to check at compile time that the + * correct type of memory is being used. + */ +struct xc_hypercall_buffer { + /* Hypercall safe memory buffer. */ + void *hbuf; + + /* + * Reference to xc_hypercall_buffer passed as argument to the + * current function. + */ + struct xc_hypercall_buffer *param_shadow; + + /* + * Direction of copy for bounce buffering. + */ + int dir; + + /* Used iff dir != 0. */ + void *ubuf; + size_t sz; +}; +typedef struct xc_hypercall_buffer xc_hypercall_buffer_t; + +/* + * Construct the name of the hypercall buffer for a given variable. + * For internal use only + */ +#define XC__HYPERCALL_BUFFER_NAME(_name) xc__hypercall_buffer_##_name + +/* + * Returns the hypercall_buffer associated with a variable. + */ +#define HYPERCALL_BUFFER(_name) \ + ({ xc_hypercall_buffer_t _hcbuf_buf1; \ + typeof(XC__HYPERCALL_BUFFER_NAME(_name)) *_hcbuf_buf2 = \ + &XC__HYPERCALL_BUFFER_NAME(_name); \ + (void)(&_hcbuf_buf1 == _hcbuf_buf2); \ + (_hcbuf_buf2)->param_shadow ? \ + (_hcbuf_buf2)->param_shadow : (_hcbuf_buf2); \ + }) + +#define HYPERCALL_BUFFER_INIT_NO_BOUNCE .dir = 0, .sz = 0, .ubuf = (void *)-1 + +/* + * Defines a hypercall buffer and user pointer with _name of _type. + * + * The user accesses the data as normal via _name which will be + * transparently converted to the hypercall buffer as necessary. + */ +#define DECLARE_HYPERCALL_BUFFER(_type, _name) \ + _type *(_name) = NULL; \ + xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(_name) = { \ + .hbuf = NULL, \ + .param_shadow = NULL, \ + HYPERCALL_BUFFER_INIT_NO_BOUNCE \ + } + +/* + * Like DECLARE_HYPERCALL_BUFFER() but using an already allocated + * hypercall buffer, _hbuf. + * + * Useful when a hypercall buffer is passed to a function and access + * via the user pointer is required. + * + * See DECLARE_HYPERCALL_BUFFER_ARGUMENT() if the user pointer is not + * required. + */ +#define DECLARE_HYPERCALL_BUFFER_SHADOW(_type, _name, _hbuf) \ + _type *(_name) = (_hbuf)->hbuf; \ + __attribute__((unused)) \ + xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(_name) = { \ + .hbuf = (void *)-1, \ + .param_shadow = (_hbuf), \ + HYPERCALL_BUFFER_INIT_NO_BOUNCE \ + } + +/* + * Declare the necessary data structure to allow a hypercall buffer + * passed as an argument to a function to be used in the normal way. + */ +#define DECLARE_HYPERCALL_BUFFER_ARGUMENT(_name) \ + xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(_name) = { \ + .hbuf = (void *)-1, \ + .param_shadow = (_name), \ + HYPERCALL_BUFFER_INIT_NO_BOUNCE \ + } + +/* + * Get the hypercall buffer data pointer in a form suitable for use + * directly as a hypercall argument. + */ +#define HYPERCALL_BUFFER_AS_ARG(_name) \ + ({ xc_hypercall_buffer_t _hcbuf_arg1; \ + typeof(XC__HYPERCALL_BUFFER_NAME(_name)) *_hcbuf_arg2 = \ + HYPERCALL_BUFFER(_name); \ + (void)(&_hcbuf_arg1 == _hcbuf_arg2); \ + (unsigned long)(_hcbuf_arg2)->hbuf; \ + }) + +/* + * Set a xen_guest_handle in a type safe manner, ensuring that the + * data pointer has been correctly allocated. + */ +#define set_xen_guest_handle_impl(_hnd, _val, _byte_off) \ + do { \ + xc_hypercall_buffer_t _hcbuf_hnd1; \ + typeof(XC__HYPERCALL_BUFFER_NAME(_val)) *_hcbuf_hnd2 = \ + HYPERCALL_BUFFER(_val); \ + (void) (&_hcbuf_hnd1 == _hcbuf_hnd2); \ + set_xen_guest_handle_raw(_hnd, \ + (_hcbuf_hnd2)->hbuf + (_byte_off)); \ + } while (0) + +#undef set_xen_guest_handle +#define set_xen_guest_handle(_hnd, _val) \ + set_xen_guest_handle_impl(_hnd, _val, 0) + +#define set_xen_guest_handle_offset(_hnd, _val, _off) \ + set_xen_guest_handle_impl(_hnd, _val, \ + ((sizeof(*_val)*(_off)))) + +/* Use with set_xen_guest_handle in place of NULL */ +extern xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(HYPERCALL_BUFFER_NULL); + +/* + * Allocate and free hypercall buffers with byte granularity. + */ +void *xc__hypercall_buffer_alloc(xc_interface *xch, xc_hypercall_buffer_t *b, size_t size); +#define xc_hypercall_buffer_alloc(_xch, _name, _size) xc__hypercall_buffer_alloc(_xch, HYPERCALL_BUFFER(_name), _size) +void xc__hypercall_buffer_free(xc_interface *xch, xc_hypercall_buffer_t *b); +#define xc_hypercall_buffer_free(_xch, _name) xc__hypercall_buffer_free(_xch, HYPERCALL_BUFFER(_name)) + +/* + * Allocate and free hypercall buffers with page alignment. + */ +void *xc__hypercall_buffer_alloc_pages(xc_interface *xch, xc_hypercall_buffer_t *b, int nr_pages); +#define xc_hypercall_buffer_alloc_pages(_xch, _name, _nr) xc__hypercall_buffer_alloc_pages(_xch, HYPERCALL_BUFFER(_name), _nr) +void xc__hypercall_buffer_free_pages(xc_interface *xch, xc_hypercall_buffer_t *b, int nr_pages); +#define xc_hypercall_buffer_free_pages(_xch, _name, _nr) \ + do { \ + if ( _name ) \ + xc__hypercall_buffer_free_pages(_xch, HYPERCALL_BUFFER(_name), \ + _nr); \ + } while (0) + +/* + * Array of hypercall buffers. + * + * Create an array with xc_hypercall_buffer_array_create() and + * populate it by declaring one hypercall buffer in a loop and + * allocating the buffer with xc_hypercall_buffer_array_alloc(). + * + * To access a previously allocated buffers, declare a new hypercall + * buffer and call xc_hypercall_buffer_array_get(). + * + * Destroy the array with xc_hypercall_buffer_array_destroy() to free + * the array and all its allocated hypercall buffers. + */ +struct xc_hypercall_buffer_array; +typedef struct xc_hypercall_buffer_array xc_hypercall_buffer_array_t; + +xc_hypercall_buffer_array_t *xc_hypercall_buffer_array_create(xc_interface *xch, unsigned n); +void *xc__hypercall_buffer_array_alloc(xc_interface *xch, xc_hypercall_buffer_array_t *array, + unsigned index, xc_hypercall_buffer_t *hbuf, size_t size); +#define xc_hypercall_buffer_array_alloc(_xch, _array, _index, _name, _size) \ + xc__hypercall_buffer_array_alloc(_xch, _array, _index, HYPERCALL_BUFFER(_name), _size) +void *xc__hypercall_buffer_array_get(xc_interface *xch, xc_hypercall_buffer_array_t *array, + unsigned index, xc_hypercall_buffer_t *hbuf); +#define xc_hypercall_buffer_array_get(_xch, _array, _index, _name, _size) \ + xc__hypercall_buffer_array_get(_xch, _array, _index, HYPERCALL_BUFFER(_name)) +void xc_hypercall_buffer_array_destroy(xc_interface *xc, xc_hypercall_buffer_array_t *array); + +/* + * CPUMAP handling + */ +typedef uint8_t *xc_cpumap_t; + +/* return maximum number of cpus the hypervisor supports */ +int xc_get_max_cpus(xc_interface *xch); + +/* return the number of online cpus */ +int xc_get_online_cpus(xc_interface *xch); + +/* return array size for cpumap */ +int xc_get_cpumap_size(xc_interface *xch); + +/* allocate a cpumap */ +xc_cpumap_t xc_cpumap_alloc(xc_interface *xch); + +/* clear an CPU from the cpumap. */ +void xc_cpumap_clearcpu(int cpu, xc_cpumap_t map); + +/* set an CPU in the cpumap. */ +void xc_cpumap_setcpu(int cpu, xc_cpumap_t map); + +/* Test whether the CPU in cpumap is set. */ +int xc_cpumap_testcpu(int cpu, xc_cpumap_t map); + +/* + * NODEMAP handling + */ +typedef uint8_t *xc_nodemap_t; + +/* return maximum number of NUMA nodes the hypervisor supports */ +int xc_get_max_nodes(xc_interface *xch); + +/* return array size for nodemap */ +int xc_get_nodemap_size(xc_interface *xch); + +/* allocate a nodemap */ +xc_nodemap_t xc_nodemap_alloc(xc_interface *xch); + +/* + * DOMAIN DEBUGGING FUNCTIONS + */ + +typedef struct xc_core_header { + unsigned int xch_magic; + unsigned int xch_nr_vcpus; + unsigned int xch_nr_pages; + unsigned int xch_ctxt_offset; + unsigned int xch_index_offset; + unsigned int xch_pages_offset; +} xc_core_header_t; + +#define XC_CORE_MAGIC 0xF00FEBED +#define XC_CORE_MAGIC_HVM 0xF00FEBEE + +/* + * DOMAIN MANAGEMENT FUNCTIONS + */ + +typedef struct xc_dominfo { + uint32_t domid; + uint32_t ssidref; + unsigned int dying:1, crashed:1, shutdown:1, + paused:1, blocked:1, running:1, + hvm:1, debugged:1, xenstore:1, hap:1; + unsigned int shutdown_reason; /* only meaningful if shutdown==1 */ + unsigned long nr_pages; /* current number, not maximum */ + unsigned long nr_outstanding_pages; + unsigned long nr_shared_pages; + unsigned long nr_paged_pages; + unsigned long shared_info_frame; + uint64_t cpu_time; + unsigned long max_memkb; + unsigned int nr_online_vcpus; + unsigned int max_vcpu_id; + xen_domain_handle_t handle; + unsigned int cpupool; + struct xen_arch_domainconfig arch_config; +} xc_dominfo_t; + +typedef xen_domctl_getdomaininfo_t xc_domaininfo_t; + +typedef union +{ +#if defined(__i386__) || defined(__x86_64__) + vcpu_guest_context_x86_64_t x64; + vcpu_guest_context_x86_32_t x32; +#endif + vcpu_guest_context_t c; +} vcpu_guest_context_any_t; + +typedef union +{ +#if defined(__i386__) || defined(__x86_64__) + shared_info_x86_64_t x64; + shared_info_x86_32_t x32; +#endif + shared_info_t s; +} shared_info_any_t; + +#if defined(__i386__) || defined(__x86_64__) +typedef union +{ + start_info_x86_64_t x64; + start_info_x86_32_t x32; + start_info_t s; +} start_info_any_t; +#endif + +typedef struct xc_vcpu_extstate { + uint64_t xfeature_mask; + uint64_t size; + void *buffer; +} xc_vcpu_extstate_t; + +int xc_domain_create(xc_interface *xch, uint32_t *pdomid, + struct xen_domctl_createdomain *config); + + +/* Functions to produce a dump of a given domain + * xc_domain_dumpcore - produces a dump to a specified file + * xc_domain_dumpcore_via_callback - produces a dump, using a specified + * callback function + */ +int xc_domain_dumpcore(xc_interface *xch, + uint32_t domid, + const char *corename); + +/* Define the callback function type for xc_domain_dumpcore_via_callback. + * + * This function is called by the coredump code for every "write", + * and passes an opaque object for the use of the function and + * created by the caller of xc_domain_dumpcore_via_callback. + */ +typedef int (dumpcore_rtn_t)(xc_interface *xch, + void *arg, char *buffer, unsigned int length); + +int xc_domain_dumpcore_via_callback(xc_interface *xch, + uint32_t domid, + void *arg, + dumpcore_rtn_t dump_rtn); + +/* + * This function sets the maximum number of vcpus that a domain may create. + * + * @parm xch a handle to an open hypervisor interface. + * @parm domid the domain id in which vcpus are to be created. + * @parm max the maximum number of vcpus that the domain may create. + * @return 0 on success, -1 on failure. + */ +int xc_domain_max_vcpus(xc_interface *xch, + uint32_t domid, + unsigned int max); + +/** + * This function pauses a domain. A paused domain still exists in memory + * however it does not receive any timeslices from the hypervisor. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to pause + * @return 0 on success, -1 on failure. + */ +int xc_domain_pause(xc_interface *xch, + uint32_t domid); +/** + * This function unpauses a domain. The domain should have been previously + * paused. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to unpause + * return 0 on success, -1 on failure + */ +int xc_domain_unpause(xc_interface *xch, + uint32_t domid); + +/** + * This function will destroy a domain. Destroying a domain removes the domain + * completely from memory. This function should be called after sending the + * domain a SHUTDOWN control message to free up the domain resources. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to destroy + * @return 0 on success, -1 on failure + */ +int xc_domain_destroy(xc_interface *xch, + uint32_t domid); + + +/** + * This function resumes a suspended domain. The domain should have + * been previously suspended. + * + * Note that there are 'xc_domain_suspend' as suspending a domain + * is quite the endeavour. + * + * For the purpose of this explanation there are three guests: + * PV (using hypercalls for privilgied operations), HVM + * (fully hardware virtualized guests using emulated devices for everything), + * and PVHVM (PV aware with hardware virtualisation). + * + * HVM guest are the simplest - they suspend via S3 / S4 and resume from + * S3 / S4. Upon resume they have to re-negotiate with the emulated devices. + * + * PV and PVHVM communicate via hypercalls for suspend (and resume). + * For suspend the toolstack initiates the process by writing an value + * in XenBus "control/shutdown" with the string "suspend". + * + * The PV guest stashes anything it deems neccessary in 'struct + * start_info' in case of failure (PVHVM may ignore this) and calls + * the SCHEDOP_shutdown::SHUTDOWN_suspend hypercall (for PV as + * argument it passes the MFN to 'struct start_info'). + * + * And then the guest is suspended. + * + * The checkpointing or notifying a guest that the suspend failed or + * cancelled (in case of checkpoint) is by having the + * SCHEDOP_shutdown::SHUTDOWN_suspend hypercall return a non-zero + * value. + * + * The PV and PVHVM resume path are similar. For PV it would be + * similar to bootup - figure out where the 'struct start_info' is (or + * if the suspend was cancelled aka checkpointed - reuse the saved + * values). + * + * From here on they differ depending whether the guest is PV or PVHVM + * in specifics but follow overall the same path: + * - PV: Bringing up the vCPUS, + * - PVHVM: Setup vector callback, + * - Bring up vCPU runstates, + * - Remap the grant tables if checkpointing or setup from scratch, + * + * + * If the resume was not checkpointing (or if suspend was succesful) we would + * setup the PV timers and the different PV events. Lastly the PV drivers + * re-negotiate with the backend. + * + * This function would return before the guest started resuming. That is + * the guest would be in non-running state and its vCPU context would be + * in the the SCHEDOP_shutdown::SHUTDOWN_suspend hypercall return path + * (for PV and PVHVM). For HVM it would be in would be in QEMU emulated + * BIOS handling S3 suspend. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to resume + * @parm fast use cooperative resume (guest must support this) + * return 0 on success, -1 on failure + */ +int xc_domain_resume(xc_interface *xch, + uint32_t domid, + int fast); + +/** + * This function will shutdown a domain. This is intended for use in + * fully-virtualized domains where this operation is analogous to the + * sched_op operations in a paravirtualized domain. The caller is + * expected to give the reason for the shutdown. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to destroy + * @parm reason is the reason (SHUTDOWN_xxx) for the shutdown + * @return 0 on success, -1 on failure + */ +int xc_domain_shutdown(xc_interface *xch, + uint32_t domid, + int reason); + +int xc_watchdog(xc_interface *xch, + uint32_t id, + uint32_t timeout); + +/** + * This function explicitly sets the host NUMA nodes the domain will + * have affinity with. + * + * @parm xch a handle to an open hypervisor interface. + * @parm domid the domain id one wants to set the affinity of. + * @parm nodemap the map of the affine nodes. + * @return 0 on success, -1 on failure. + */ +int xc_domain_node_setaffinity(xc_interface *xch, + uint32_t domind, + xc_nodemap_t nodemap); + +/** + * This function retrieves the host NUMA nodes the domain has + * affinity with. + * + * @parm xch a handle to an open hypervisor interface. + * @parm domid the domain id one wants to get the node affinity of. + * @parm nodemap the map of the affine nodes. + * @return 0 on success, -1 on failure. + */ +int xc_domain_node_getaffinity(xc_interface *xch, + uint32_t domind, + xc_nodemap_t nodemap); + +/** + * This function specifies the CPU affinity for a vcpu. + * + * There are two kinds of affinity. Soft affinity is on what CPUs a vcpu + * prefers to run. Hard affinity is on what CPUs a vcpu is allowed to run. + * If flags contains XEN_VCPUAFFINITY_SOFT, the soft affinity it is set to + * what cpumap_soft_inout contains. If flags contains XEN_VCPUAFFINITY_HARD, + * the hard affinity is set to what cpumap_hard_inout contains. Both flags + * can be set at the same time, in which case both soft and hard affinity are + * set to what the respective parameter contains. + * + * The function also returns the effective hard or/and soft affinity, still + * via the cpumap_soft_inout and cpumap_hard_inout parameters. Effective + * affinity is, in case of soft affinity, the intersection of soft affinity, + * hard affinity and the cpupool's online CPUs for the domain, and is returned + * in cpumap_soft_inout, if XEN_VCPUAFFINITY_SOFT is set in flags. In case of + * hard affinity, it is the intersection between hard affinity and the + * cpupool's online CPUs, and is returned in cpumap_hard_inout, if + * XEN_VCPUAFFINITY_HARD is set in flags. If both flags are set, both soft + * and hard affinity are returned in the respective parameter. + * + * We do report it back as effective affinity is what the Xen scheduler will + * actually use, and we thus allow checking whether or not that matches with, + * or at least is good enough for, the caller's purposes. + * + * @param xch a handle to an open hypervisor interface. + * @param domid the id of the domain to which the vcpu belongs + * @param vcpu the vcpu id wihin the domain + * @param cpumap_hard_inout specifies(/returns) the (effective) hard affinity + * @param cpumap_soft_inout specifies(/returns) the (effective) soft affinity + * @param flags what we want to set + */ +int xc_vcpu_setaffinity(xc_interface *xch, + uint32_t domid, + int vcpu, + xc_cpumap_t cpumap_hard_inout, + xc_cpumap_t cpumap_soft_inout, + uint32_t flags); + +/** + * This function retrieves hard and soft CPU affinity of a vcpu, + * depending on what flags are set. + * + * Soft affinity is returned in cpumap_soft if XEN_VCPUAFFINITY_SOFT is set. + * Hard affinity is returned in cpumap_hard if XEN_VCPUAFFINITY_HARD is set. + * + * @param xch a handle to an open hypervisor interface. + * @param domid the id of the domain to which the vcpu belongs + * @param vcpu the vcpu id wihin the domain + * @param cpumap_hard is where hard affinity is returned + * @param cpumap_soft is where soft affinity is returned + * @param flags what we want get + */ +int xc_vcpu_getaffinity(xc_interface *xch, + uint32_t domid, + int vcpu, + xc_cpumap_t cpumap_hard, + xc_cpumap_t cpumap_soft, + uint32_t flags); + + +/** + * This function will return the guest_width (in bytes) for the + * specified domain. + * + * @param xch a handle to an open hypervisor interface. + * @param domid the domain id one wants the address size width of. + * @param addr_size the address size. + */ +int xc_domain_get_guest_width(xc_interface *xch, uint32_t domid, + unsigned int *guest_width); + + +/** + * This function will return information about one or more domains. It is + * designed to iterate over the list of domains. If a single domain is + * requested, this function will return the next domain in the list - if + * one exists. It is, therefore, important in this case to make sure the + * domain requested was the one returned. + * + * @parm xch a handle to an open hypervisor interface + * @parm first_domid the first domain to enumerate information from. Domains + * are currently enumerate in order of creation. + * @parm max_doms the number of elements in info + * @parm info an array of max_doms size that will contain the information for + * the enumerated domains. + * @return the number of domains enumerated or -1 on error + */ +int xc_domain_getinfo(xc_interface *xch, + uint32_t first_domid, + unsigned int max_doms, + xc_dominfo_t *info); + + +/** + * This function will set the execution context for the specified vcpu. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to set the vcpu context for + * @parm vcpu the vcpu number for the context + * @parm ctxt pointer to the the cpu context with the values to set + * @return the number of domains enumerated or -1 on error + */ +int xc_vcpu_setcontext(xc_interface *xch, + uint32_t domid, + uint32_t vcpu, + vcpu_guest_context_any_t *ctxt); +/** + * This function will return information about one or more domains, using a + * single hypercall. The domain information will be stored into the supplied + * array of xc_domaininfo_t structures. + * + * @parm xch a handle to an open hypervisor interface + * @parm first_domain the first domain to enumerate information from. + * Domains are currently enumerate in order of creation. + * @parm max_domains the number of elements in info + * @parm info an array of max_doms size that will contain the information for + * the enumerated domains. + * @return the number of domains enumerated or -1 on error + */ +int xc_domain_getinfolist(xc_interface *xch, + uint32_t first_domain, + unsigned int max_domains, + xc_domaininfo_t *info); + +/** + * This function set p2m for broken page + * &parm xch a handle to an open hypervisor interface + * @parm domid the domain id which broken page belong to + * @parm pfn the pfn number of the broken page + * @return 0 on success, -1 on failure + */ +int xc_set_broken_page_p2m(xc_interface *xch, + uint32_t domid, + unsigned long pfn); + +/** + * This function returns information about the context of a hvm domain + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to get information from + * @parm ctxt_buf a pointer to a structure to store the execution context of + * the hvm domain + * @parm size the size of ctxt_buf in bytes + * @return 0 on success, -1 on failure + */ +int xc_domain_hvm_getcontext(xc_interface *xch, + uint32_t domid, + uint8_t *ctxt_buf, + uint32_t size); + + +/** + * This function returns one element of the context of a hvm domain + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to get information from + * @parm typecode which type of elemnt required + * @parm instance which instance of the type + * @parm ctxt_buf a pointer to a structure to store the execution context of + * the hvm domain + * @parm size the size of ctxt_buf (must be >= HVM_SAVE_LENGTH(typecode)) + * @return 0 on success, -1 on failure + */ +int xc_domain_hvm_getcontext_partial(xc_interface *xch, + uint32_t domid, + uint16_t typecode, + uint16_t instance, + void *ctxt_buf, + uint32_t size); + +/** + * This function will set the context for hvm domain + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to set the hvm domain context for + * @parm hvm_ctxt pointer to the the hvm context with the values to set + * @parm size the size of hvm_ctxt in bytes + * @return 0 on success, -1 on failure + */ +int xc_domain_hvm_setcontext(xc_interface *xch, + uint32_t domid, + uint8_t *hvm_ctxt, + uint32_t size); + +/** + * This function will return guest IO ABI protocol + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to get IO ABI protocol for + * @return guest protocol on success, NULL on failure + */ +const char *xc_domain_get_native_protocol(xc_interface *xch, + uint32_t domid); + +/** + * This function returns information about the execution context of a + * particular vcpu of a domain. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to get information from + * @parm vcpu the vcpu number + * @parm ctxt a pointer to a structure to store the execution context of the + * domain + * @return 0 on success, -1 on failure + */ +int xc_vcpu_getcontext(xc_interface *xch, + uint32_t domid, + uint32_t vcpu, + vcpu_guest_context_any_t *ctxt); + +/** + * This function initializes the vuart emulation and returns + * the event to be used by the backend for communicating with + * the emulation code. + * + * @parm xch a handle to an open hypervisor interface + * #parm type type of vuart + * @parm domid the domain to get information from + * @parm console_domid the domid of the backend console + * @parm gfn the guest pfn to be used as the ring buffer + * @parm evtchn the event channel to be used for events + * @return 0 on success, negative error on failure + */ +int xc_dom_vuart_init(xc_interface *xch, + uint32_t type, + uint32_t domid, + uint32_t console_domid, + xen_pfn_t gfn, + evtchn_port_t *evtchn); + +/** + * This function returns information about the XSAVE state of a particular + * vcpu of a domain. If extstate->size and extstate->xfeature_mask are 0, + * the call is considered a query to retrieve them and the buffer is not + * filled. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to get information from + * @parm vcpu the vcpu number + * @parm extstate a pointer to a structure to store the XSAVE state of the + * domain + * @return 0 on success, negative error code on failure + */ +int xc_vcpu_get_extstate(xc_interface *xch, + uint32_t domid, + uint32_t vcpu, + xc_vcpu_extstate_t *extstate); + +typedef struct xen_domctl_getvcpuinfo xc_vcpuinfo_t; +int xc_vcpu_getinfo(xc_interface *xch, + uint32_t domid, + uint32_t vcpu, + xc_vcpuinfo_t *info); + +long long xc_domain_get_cpu_usage(xc_interface *xch, + uint32_t domid, + int vcpu); + +int xc_domain_sethandle(xc_interface *xch, uint32_t domid, + xen_domain_handle_t handle); + +typedef struct xen_domctl_shadow_op_stats xc_shadow_op_stats_t; +int xc_shadow_control(xc_interface *xch, + uint32_t domid, + unsigned int sop, + xc_hypercall_buffer_t *dirty_bitmap, + unsigned long pages, + unsigned long *mb, + uint32_t mode, + xc_shadow_op_stats_t *stats); + +int xc_sched_credit_domain_set(xc_interface *xch, + uint32_t domid, + struct xen_domctl_sched_credit *sdom); + +int xc_sched_credit_domain_get(xc_interface *xch, + uint32_t domid, + struct xen_domctl_sched_credit *sdom); +int xc_sched_credit_params_set(xc_interface *xch, + uint32_t cpupool_id, + struct xen_sysctl_credit_schedule *schedule); +int xc_sched_credit_params_get(xc_interface *xch, + uint32_t cpupool_id, + struct xen_sysctl_credit_schedule *schedule); + +int xc_sched_credit2_params_set(xc_interface *xch, + uint32_t cpupool_id, + struct xen_sysctl_credit2_schedule *schedule); +int xc_sched_credit2_params_get(xc_interface *xch, + uint32_t cpupool_id, + struct xen_sysctl_credit2_schedule *schedule); +int xc_sched_credit2_domain_set(xc_interface *xch, + uint32_t domid, + struct xen_domctl_sched_credit2 *sdom); +int xc_sched_credit2_domain_get(xc_interface *xch, + uint32_t domid, + struct xen_domctl_sched_credit2 *sdom); + +int xc_sched_rtds_domain_set(xc_interface *xch, + uint32_t domid, + struct xen_domctl_sched_rtds *sdom); +int xc_sched_rtds_domain_get(xc_interface *xch, + uint32_t domid, + struct xen_domctl_sched_rtds *sdom); +int xc_sched_rtds_vcpu_set(xc_interface *xch, + uint32_t domid, + struct xen_domctl_schedparam_vcpu *vcpus, + uint32_t num_vcpus); +int xc_sched_rtds_vcpu_get(xc_interface *xch, + uint32_t domid, + struct xen_domctl_schedparam_vcpu *vcpus, + uint32_t num_vcpus); + +int +xc_sched_arinc653_schedule_set( + xc_interface *xch, + uint32_t cpupool_id, + struct xen_sysctl_arinc653_schedule *schedule); + +int +xc_sched_arinc653_schedule_get( + xc_interface *xch, + uint32_t cpupool_id, + struct xen_sysctl_arinc653_schedule *schedule); + +/** + * This function sends a trigger to a domain. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to send trigger + * @parm trigger the trigger type + * @parm vcpu the vcpu number to send trigger + * return 0 on success, -1 on failure + */ +int xc_domain_send_trigger(xc_interface *xch, + uint32_t domid, + uint32_t trigger, + uint32_t vcpu); + +/** + * This function enables or disable debugging of a domain. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to send trigger + * @parm enable true to enable debugging + * return 0 on success, -1 on failure + */ +int xc_domain_setdebugging(xc_interface *xch, + uint32_t domid, + unsigned int enable); + +/** + * This function audits the (top level) p2m of a domain + * and returns the different error counts, if any. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id whose top level p2m we + * want to audit + * @parm orphans count of m2p entries for valid + * domain pages containing an invalid value + * @parm m2p_bad count of m2p entries mismatching the + * associated p2m entry for this domain + * @parm p2m_bad count of p2m entries for this domain + * mismatching the associated m2p entry + * return 0 on success, -1 on failure + * errno values on failure include: + * -ENOSYS: not implemented + * -EFAULT: could not copy results back to guest + */ +int xc_domain_p2m_audit(xc_interface *xch, + uint32_t domid, + uint64_t *orphans, + uint64_t *m2p_bad, + uint64_t *p2m_bad); + +/** + * This function sets or clears the requirement that an access memory + * event listener is required on the domain. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id to send trigger + * @parm enable true to require a listener + * return 0 on success, -1 on failure + */ +int xc_domain_set_access_required(xc_interface *xch, + uint32_t domid, + unsigned int required); +/** + * This function sets the handler of global VIRQs sent by the hypervisor + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain id which will handle the VIRQ + * @parm virq the virq number (VIRQ_*) + * return 0 on success, -1 on failure + */ +int xc_domain_set_virq_handler(xc_interface *xch, uint32_t domid, int virq); + +/* + * CPUPOOL MANAGEMENT FUNCTIONS + */ + +typedef struct xc_cpupoolinfo { + uint32_t cpupool_id; + uint32_t sched_id; + uint32_t n_dom; + xc_cpumap_t cpumap; +} xc_cpupoolinfo_t; + +#define XC_CPUPOOL_POOLID_ANY 0xFFFFFFFF + +/** + * Create a new cpupool. + * + * @parm xc_handle a handle to an open hypervisor interface + * @parm ppoolid pointer to the new cpupool id (in/out) + * @parm sched_id id of scheduler to use for pool + * return 0 on success, -1 on failure + */ +int xc_cpupool_create(xc_interface *xch, + uint32_t *ppoolid, + uint32_t sched_id); + +/** + * Destroy a cpupool. Pool must be unused and have no cpu assigned. + * + * @parm xc_handle a handle to an open hypervisor interface + * @parm poolid id of the cpupool to destroy + * return 0 on success, -1 on failure + */ +int xc_cpupool_destroy(xc_interface *xch, + uint32_t poolid); + +/** + * Get cpupool info. Returns info for up to the specified number of cpupools + * starting at the given id. + * @parm xc_handle a handle to an open hypervisor interface + * @parm poolid lowest id for which info is returned + * return cpupool info ptr (to be freed via xc_cpupool_infofree) + */ +xc_cpupoolinfo_t *xc_cpupool_getinfo(xc_interface *xch, + uint32_t poolid); + +/** + * Free cpupool info. Used to free info obtained via xc_cpupool_getinfo. + * @parm xc_handle a handle to an open hypervisor interface + * @parm info area to free + */ +void xc_cpupool_infofree(xc_interface *xch, + xc_cpupoolinfo_t *info); + +/** + * Add cpu to a cpupool. cpu may be -1 indicating the first unassigned. + * + * @parm xc_handle a handle to an open hypervisor interface + * @parm poolid id of the cpupool + * @parm cpu cpu number to add + * return 0 on success, -1 on failure + */ +int xc_cpupool_addcpu(xc_interface *xch, + uint32_t poolid, + int cpu); + +/** + * Remove cpu from cpupool. cpu may be -1 indicating the last cpu of the pool. + * + * @parm xc_handle a handle to an open hypervisor interface + * @parm poolid id of the cpupool + * @parm cpu cpu number to remove + * return 0 on success, -1 on failure + */ +int xc_cpupool_removecpu(xc_interface *xch, + uint32_t poolid, + int cpu); + +/** + * Move domain to another cpupool. + * + * @parm xc_handle a handle to an open hypervisor interface + * @parm poolid id of the destination cpupool + * @parm domid id of the domain to move + * return 0 on success, -1 on failure + */ +int xc_cpupool_movedomain(xc_interface *xch, + uint32_t poolid, + uint32_t domid); + +/** + * Return map of cpus not in any cpupool. + * + * @parm xc_handle a handle to an open hypervisor interface + * return cpumap array on success, NULL else + */ +xc_cpumap_t xc_cpupool_freeinfo(xc_interface *xch); + +/* + * EVENT CHANNEL FUNCTIONS + * + * None of these do any logging. + */ + +/* A port identifier is guaranteed to fit in 31 bits. */ +typedef int xc_evtchn_port_or_error_t; + +/** + * This function allocates an unbound port. Ports are named endpoints used for + * interdomain communication. This function is most useful in opening a + * well-known port within a domain to receive events on. + * + * NOTE: If you are allocating a *local* unbound port, you probably want to + * use xc_evtchn_bind_unbound_port(). This function is intended for allocating + * ports *only* during domain creation. + * + * @parm xch a handle to an open hypervisor interface + * @parm dom the ID of the local domain (the 'allocatee') + * @parm remote_dom the ID of the domain who will later bind + * @return allocated port (in @dom) on success, -1 on failure + */ +xc_evtchn_port_or_error_t +xc_evtchn_alloc_unbound(xc_interface *xch, + uint32_t dom, + uint32_t remote_dom); + +int xc_evtchn_reset(xc_interface *xch, + uint32_t dom); + +typedef struct evtchn_status xc_evtchn_status_t; +int xc_evtchn_status(xc_interface *xch, xc_evtchn_status_t *status); + + + +int xc_physdev_pci_access_modify(xc_interface *xch, + uint32_t domid, + int bus, + int dev, + int func, + int enable); + +int xc_readconsolering(xc_interface *xch, + char *buffer, + unsigned int *pnr_chars, + int clear, int incremental, uint32_t *pindex); + +int xc_send_debug_keys(xc_interface *xch, const char *keys); + +typedef struct xen_sysctl_physinfo xc_physinfo_t; +typedef struct xen_sysctl_cputopo xc_cputopo_t; +typedef struct xen_sysctl_numainfo xc_numainfo_t; +typedef struct xen_sysctl_meminfo xc_meminfo_t; +typedef struct xen_sysctl_pcitopoinfo xc_pcitopoinfo_t; + +typedef uint32_t xc_cpu_to_node_t; +typedef uint32_t xc_cpu_to_socket_t; +typedef uint32_t xc_cpu_to_core_t; +typedef uint64_t xc_node_to_memsize_t; +typedef uint64_t xc_node_to_memfree_t; +typedef uint32_t xc_node_to_node_dist_t; + +int xc_physinfo(xc_interface *xch, xc_physinfo_t *info); +int xc_cputopoinfo(xc_interface *xch, unsigned *max_cpus, + xc_cputopo_t *cputopo); +int xc_microcode_update(xc_interface *xch, const void *buf, size_t len); +int xc_numainfo(xc_interface *xch, unsigned *max_nodes, + xc_meminfo_t *meminfo, uint32_t *distance); +int xc_pcitopoinfo(xc_interface *xch, unsigned num_devs, + physdev_pci_device_t *devs, uint32_t *nodes); + +int xc_sched_id(xc_interface *xch, + int *sched_id); + +int xc_machphys_mfn_list(xc_interface *xch, + unsigned long max_extents, + xen_pfn_t *extent_start); + +typedef struct xen_sysctl_cpuinfo xc_cpuinfo_t; +int xc_getcpuinfo(xc_interface *xch, int max_cpus, + xc_cpuinfo_t *info, int *nr_cpus); + +int xc_domain_setmaxmem(xc_interface *xch, + uint32_t domid, + uint64_t max_memkb); + +int xc_domain_set_memmap_limit(xc_interface *xch, + uint32_t domid, + unsigned long map_limitkb); + +int xc_domain_setvnuma(xc_interface *xch, + uint32_t domid, + uint32_t nr_vnodes, + uint32_t nr_regions, + uint32_t nr_vcpus, + xen_vmemrange_t *vmemrange, + unsigned int *vdistance, + unsigned int *vcpu_to_vnode, + unsigned int *vnode_to_pnode); +/* + * Retrieve vnuma configuration + * domid: IN, target domid + * nr_vnodes: IN/OUT, number of vnodes, not NULL + * nr_vmemranges: IN/OUT, number of vmemranges, not NULL + * nr_vcpus: IN/OUT, number of vcpus, not NULL + * vmemranges: OUT, an array which has length of nr_vmemranges + * vdistance: OUT, an array which has length of nr_vnodes * nr_vnodes + * vcpu_to_vnode: OUT, an array which has length of nr_vcpus + */ +int xc_domain_getvnuma(xc_interface *xch, + uint32_t domid, + uint32_t *nr_vnodes, + uint32_t *nr_vmemranges, + uint32_t *nr_vcpus, + xen_vmemrange_t *vmemrange, + unsigned int *vdistance, + unsigned int *vcpu_to_vnode); + +int xc_domain_soft_reset(xc_interface *xch, + uint32_t domid); + +#if defined(__i386__) || defined(__x86_64__) +/* + * PC BIOS standard E820 types and structure. + */ +#define E820_RAM 1 +#define E820_RESERVED 2 +#define E820_ACPI 3 +#define E820_NVS 4 +#define E820_UNUSABLE 5 + +#define E820MAX (128) + +struct e820entry { + uint64_t addr; + uint64_t size; + uint32_t type; +} __attribute__((packed)); +int xc_domain_set_memory_map(xc_interface *xch, + uint32_t domid, + struct e820entry entries[], + uint32_t nr_entries); + +int xc_get_machine_memory_map(xc_interface *xch, + struct e820entry entries[], + uint32_t max_entries); +#endif + +int xc_reserved_device_memory_map(xc_interface *xch, + uint32_t flags, + uint16_t seg, + uint8_t bus, + uint8_t devfn, + struct xen_reserved_device_memory entries[], + uint32_t *max_entries); +int xc_domain_set_time_offset(xc_interface *xch, + uint32_t domid, + int32_t time_offset_seconds); + +int xc_domain_set_tsc_info(xc_interface *xch, + uint32_t domid, + uint32_t tsc_mode, + uint64_t elapsed_nsec, + uint32_t gtsc_khz, + uint32_t incarnation); + +int xc_domain_get_tsc_info(xc_interface *xch, + uint32_t domid, + uint32_t *tsc_mode, + uint64_t *elapsed_nsec, + uint32_t *gtsc_khz, + uint32_t *incarnation); + +int xc_domain_disable_migrate(xc_interface *xch, uint32_t domid); + +int xc_domain_maximum_gpfn(xc_interface *xch, uint32_t domid, xen_pfn_t *gpfns); + +int xc_domain_nr_gpfns(xc_interface *xch, uint32_t domid, xen_pfn_t *gpfns); + +int xc_domain_increase_reservation(xc_interface *xch, + uint32_t domid, + unsigned long nr_extents, + unsigned int extent_order, + unsigned int mem_flags, + xen_pfn_t *extent_start); + +int xc_domain_increase_reservation_exact(xc_interface *xch, + uint32_t domid, + unsigned long nr_extents, + unsigned int extent_order, + unsigned int mem_flags, + xen_pfn_t *extent_start); + +int xc_domain_decrease_reservation(xc_interface *xch, + uint32_t domid, + unsigned long nr_extents, + unsigned int extent_order, + xen_pfn_t *extent_start); + +int xc_domain_decrease_reservation_exact(xc_interface *xch, + uint32_t domid, + unsigned long nr_extents, + unsigned int extent_order, + xen_pfn_t *extent_start); + +int xc_domain_add_to_physmap(xc_interface *xch, + uint32_t domid, + unsigned int space, + unsigned long idx, + xen_pfn_t gpfn); + +int xc_domain_add_to_physmap_batch(xc_interface *xch, + uint32_t domid, + uint32_t foreign_domid, + unsigned int space, + unsigned int size, + xen_ulong_t *idxs, + xen_pfn_t *gfpns, + int *errs); + +int xc_domain_remove_from_physmap(xc_interface *xch, + uint32_t domid, + xen_pfn_t gpfn); + +int xc_domain_populate_physmap(xc_interface *xch, + uint32_t domid, + unsigned long nr_extents, + unsigned int extent_order, + unsigned int mem_flags, + xen_pfn_t *extent_start); + +int xc_domain_populate_physmap_exact(xc_interface *xch, + uint32_t domid, + unsigned long nr_extents, + unsigned int extent_order, + unsigned int mem_flags, + xen_pfn_t *extent_start); + +int xc_domain_claim_pages(xc_interface *xch, + uint32_t domid, + unsigned long nr_pages); + +int xc_domain_memory_exchange_pages(xc_interface *xch, + uint32_t domid, + unsigned long nr_in_extents, + unsigned int in_order, + xen_pfn_t *in_extents, + unsigned long nr_out_extents, + unsigned int out_order, + xen_pfn_t *out_extents); + +int xc_domain_set_pod_target(xc_interface *xch, + uint32_t domid, + uint64_t target_pages, + uint64_t *tot_pages, + uint64_t *pod_cache_pages, + uint64_t *pod_entries); + +int xc_domain_get_pod_target(xc_interface *xch, + uint32_t domid, + uint64_t *tot_pages, + uint64_t *pod_cache_pages, + uint64_t *pod_entries); + +int xc_domain_ioport_permission(xc_interface *xch, + uint32_t domid, + uint32_t first_port, + uint32_t nr_ports, + uint32_t allow_access); + +int xc_domain_irq_permission(xc_interface *xch, + uint32_t domid, + uint8_t pirq, + uint8_t allow_access); + +int xc_domain_iomem_permission(xc_interface *xch, + uint32_t domid, + unsigned long first_mfn, + unsigned long nr_mfns, + uint8_t allow_access); + +unsigned long xc_make_page_below_4G(xc_interface *xch, uint32_t domid, + unsigned long mfn); + +typedef xen_sysctl_perfc_desc_t xc_perfc_desc_t; +typedef xen_sysctl_perfc_val_t xc_perfc_val_t; +int xc_perfc_reset(xc_interface *xch); +int xc_perfc_query_number(xc_interface *xch, + int *nbr_desc, + int *nbr_val); +int xc_perfc_query(xc_interface *xch, + xc_hypercall_buffer_t *desc, + xc_hypercall_buffer_t *val); + +typedef xen_sysctl_lockprof_data_t xc_lockprof_data_t; +int xc_lockprof_reset(xc_interface *xch); +int xc_lockprof_query_number(xc_interface *xch, + uint32_t *n_elems); +int xc_lockprof_query(xc_interface *xch, + uint32_t *n_elems, + uint64_t *time, + xc_hypercall_buffer_t *data); + +void *xc_memalign(xc_interface *xch, size_t alignment, size_t size); + +/** + * Avoid using this function, as it does not work for all cases (such + * as 4M superpages, or guests using PSE36). Only used for debugging. + * + * Translates a virtual address in the context of a given domain and + * vcpu returning the GFN containing the address (that is, an MFN for + * PV guests, a PFN for HVM guests). Returns 0 for failure. + * + * @parm xch a handle on an open hypervisor interface + * @parm dom the domain to perform the translation in + * @parm vcpu the vcpu to perform the translation on + * @parm virt the virtual address to translate + */ +unsigned long xc_translate_foreign_address(xc_interface *xch, uint32_t dom, + int vcpu, unsigned long long virt); + + +int xc_copy_to_domain_page(xc_interface *xch, uint32_t domid, + unsigned long dst_pfn, const char *src_page); + +int xc_clear_domain_pages(xc_interface *xch, uint32_t domid, + unsigned long dst_pfn, int num); + +static inline int xc_clear_domain_page(xc_interface *xch, uint32_t domid, + unsigned long dst_pfn) +{ + return xc_clear_domain_pages(xch, domid, dst_pfn, 1); +} + +int xc_mmuext_op(xc_interface *xch, struct mmuext_op *op, unsigned int nr_ops, + uint32_t dom); + +/* System wide memory properties */ +int xc_maximum_ram_page(xc_interface *xch, unsigned long *max_mfn); + +/* Get current total pages allocated to a domain. */ +long xc_get_tot_pages(xc_interface *xch, uint32_t domid); + +/** + * This function retrieves the the number of bytes available + * in the heap in a specific range of address-widths and nodes. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid the domain to query + * @parm min_width the smallest address width to query (0 if don't care) + * @parm max_width the largest address width to query (0 if don't care) + * @parm node the node to query (-1 for all) + * @parm *bytes caller variable to put total bytes counted + * @return 0 on success, <0 on failure. + */ +int xc_availheap(xc_interface *xch, int min_width, int max_width, int node, + uint64_t *bytes); + +/* + * Trace Buffer Operations + */ + +/** + * xc_tbuf_enable - enable tracing buffers + * + * @parm xch a handle to an open hypervisor interface + * @parm cnt size of tracing buffers to create (in pages) + * @parm mfn location to store mfn of the trace buffers to + * @parm size location to store the size (in bytes) of a trace buffer to + * + * Gets the machine address of the trace pointer area and the size of the + * per CPU buffers. + */ +int xc_tbuf_enable(xc_interface *xch, unsigned long pages, + unsigned long *mfn, unsigned long *size); + +/* + * Disable tracing buffers. + */ +int xc_tbuf_disable(xc_interface *xch); + +/** + * This function sets the size of the trace buffers. Setting the size + * is currently a one-shot operation that may be performed either at boot + * time or via this interface, not both. The buffer size must be set before + * enabling tracing. + * + * @parm xch a handle to an open hypervisor interface + * @parm size the size in pages per cpu for the trace buffers + * @return 0 on success, -1 on failure. + */ +int xc_tbuf_set_size(xc_interface *xch, unsigned long size); + +/** + * This function retrieves the current size of the trace buffers. + * Note that the size returned is in terms of bytes, not pages. + + * @parm xch a handle to an open hypervisor interface + * @parm size will contain the size in bytes for the trace buffers + * @return 0 on success, -1 on failure. + */ +int xc_tbuf_get_size(xc_interface *xch, unsigned long *size); + +int xc_tbuf_set_cpu_mask(xc_interface *xch, xc_cpumap_t mask); + +int xc_tbuf_set_evt_mask(xc_interface *xch, uint32_t mask); + +int xc_domctl(xc_interface *xch, struct xen_domctl *domctl); +int xc_sysctl(xc_interface *xch, struct xen_sysctl *sysctl); + +int xc_version(xc_interface *xch, int cmd, void *arg); + +int xc_flask_op(xc_interface *xch, xen_flask_op_t *op); + +/* + * Subscribe to domain suspend via evtchn. + * Returns -1 on failure, in which case errno will be set appropriately. + * Just calls XEN_DOMCTL_subscribe - see the caveats for that domctl + * (in its doc comment in domctl.h). + */ +int xc_domain_subscribe_for_suspend( + xc_interface *xch, uint32_t domid, evtchn_port_t port); + +/************************** + * GRANT TABLE OPERATIONS * + **************************/ + +/* + * These functions sometimes log messages as above, but not always. + */ + + +int xc_gnttab_op(xc_interface *xch, int cmd, + void * op, int op_size, int count); +/* Logs iff hypercall bounce fails, otherwise doesn't. */ + +int xc_gnttab_query_size(xc_interface *xch, struct gnttab_query_size *query); +int xc_gnttab_get_version(xc_interface *xch, uint32_t domid); /* Never logs */ +grant_entry_v1_t *xc_gnttab_map_table_v1(xc_interface *xch, uint32_t domid, int *gnt_num); +grant_entry_v2_t *xc_gnttab_map_table_v2(xc_interface *xch, uint32_t domid, int *gnt_num); +/* Sometimes these don't set errno [fixme], and sometimes they don't log. */ + +int xc_physdev_map_pirq(xc_interface *xch, + uint32_t domid, + int index, + int *pirq); + +int xc_physdev_map_pirq_msi(xc_interface *xch, + uint32_t domid, + int index, + int *pirq, + int devfn, + int bus, + int entry_nr, + uint64_t table_base); + +int xc_physdev_unmap_pirq(xc_interface *xch, + uint32_t domid, + int pirq); + +/* + * LOGGING AND ERROR REPORTING + */ + + +#define XC_MAX_ERROR_MSG_LEN 1024 +typedef struct xc_error { + enum xc_error_code code; + char message[XC_MAX_ERROR_MSG_LEN]; +} xc_error; + + +/* + * Convert an error code or level into a text description. Return values + * are pointers to fixed strings and do not need to be freed. + * Do not fail, but return pointers to generic strings if fed bogus input. + */ +const char *xc_error_code_to_desc(int code); + +/* + * Convert an errno value to a text description. + */ +const char *xc_strerror(xc_interface *xch, int errcode); + + +/* + * Return a pointer to the last error with level XC_REPORT_ERROR. This + * pointer and the data pointed to are only valid until the next call + * to libxc in the same thread. + */ +const xc_error *xc_get_last_error(xc_interface *handle); + +/* + * Clear the last error + */ +void xc_clear_last_error(xc_interface *xch); + +int xc_hvm_param_set(xc_interface *handle, uint32_t dom, uint32_t param, uint64_t value); +int xc_hvm_param_get(xc_interface *handle, uint32_t dom, uint32_t param, uint64_t *value); + +/* Deprecated: use xc_hvm_param_set/get() instead. */ +int xc_set_hvm_param(xc_interface *handle, uint32_t dom, int param, unsigned long value); +int xc_get_hvm_param(xc_interface *handle, uint32_t dom, int param, unsigned long *value); + +/* HVM guest pass-through */ +int xc_assign_device(xc_interface *xch, + uint32_t domid, + uint32_t machine_sbdf, + uint32_t flag); + +int xc_get_device_group(xc_interface *xch, + uint32_t domid, + uint32_t machine_sbdf, + uint32_t max_sdevs, + uint32_t *num_sdevs, + uint32_t *sdev_array); + +int xc_test_assign_device(xc_interface *xch, + uint32_t domid, + uint32_t machine_sbdf); + +int xc_deassign_device(xc_interface *xch, + uint32_t domid, + uint32_t machine_sbdf); + +int xc_assign_dt_device(xc_interface *xch, + uint32_t domid, + char *path); +int xc_test_assign_dt_device(xc_interface *xch, + uint32_t domid, + char *path); +int xc_deassign_dt_device(xc_interface *xch, + uint32_t domid, + char *path); + +int xc_domain_memory_mapping(xc_interface *xch, + uint32_t domid, + unsigned long first_gfn, + unsigned long first_mfn, + unsigned long nr_mfns, + uint32_t add_mapping); + +int xc_domain_ioport_mapping(xc_interface *xch, + uint32_t domid, + uint32_t first_gport, + uint32_t first_mport, + uint32_t nr_ports, + uint32_t add_mapping); + +int xc_domain_update_msi_irq( + xc_interface *xch, + uint32_t domid, + uint32_t gvec, + uint32_t pirq, + uint32_t gflags, + uint64_t gtable); + +int xc_domain_unbind_msi_irq(xc_interface *xch, + uint32_t domid, + uint32_t gvec, + uint32_t pirq, + uint32_t gflags); + +int xc_domain_bind_pt_irq(xc_interface *xch, + uint32_t domid, + uint8_t machine_irq, + uint8_t irq_type, + uint8_t bus, + uint8_t device, + uint8_t intx, + uint8_t isa_irq); + +int xc_domain_unbind_pt_irq(xc_interface *xch, + uint32_t domid, + uint8_t machine_irq, + uint8_t irq_type, + uint8_t bus, + uint8_t device, + uint8_t intx, + uint8_t isa_irq); + +int xc_domain_bind_pt_pci_irq(xc_interface *xch, + uint32_t domid, + uint8_t machine_irq, + uint8_t bus, + uint8_t device, + uint8_t intx); + +int xc_domain_bind_pt_isa_irq(xc_interface *xch, + uint32_t domid, + uint8_t machine_irq); + +int xc_domain_bind_pt_spi_irq(xc_interface *xch, + uint32_t domid, + uint16_t vspi, + uint16_t spi); + +int xc_domain_unbind_pt_spi_irq(xc_interface *xch, + uint32_t domid, + uint16_t vspi, + uint16_t spi); + +/* Set the target domain */ +int xc_domain_set_target(xc_interface *xch, + uint32_t domid, + uint32_t target); + +/* Control the domain for debug */ +int xc_domain_debug_control(xc_interface *xch, + uint32_t domid, + uint32_t sop, + uint32_t vcpu); + +#if defined(__i386__) || defined(__x86_64__) + +/* + * CPUID policy data, expressed in the legacy XEND format. + * + * Policy is an array of strings, 32 chars long: + * policy[0] = eax + * policy[1] = ebx + * policy[2] = ecx + * policy[3] = edx + * + * The format of the string is the following: + * '1' -> force to 1 + * '0' -> force to 0 + * 'x' -> we don't care (use default) + * 'k' -> pass through host value + * 's' -> legacy alias for 'k' + */ +struct xc_xend_cpuid { + union { + struct { + uint32_t leaf, subleaf; + }; + uint32_t input[2]; + }; + char *policy[4]; +}; + +/* + * Make adjustments to the CPUID settings for a domain. + * + * This path is used in two cases. First, for fresh boots of the domain, and + * secondly for migrate-in/restore of pre-4.14 guests (where CPUID data was + * missing from the stream). The @restore parameter distinguishes these + * cases, and the generated policy must be compatible with a 4.13. + * + * Either pass a full new @featureset (and @nr_features), or adjust individual + * features (@pae). + * + * Then (optionally) apply legacy XEND overrides (@xend) to the result. + */ +int xc_cpuid_apply_policy(xc_interface *xch, + uint32_t domid, bool restore, + const uint32_t *featureset, + unsigned int nr_features, bool pae, + const struct xc_xend_cpuid *xend); +int xc_mca_op(xc_interface *xch, struct xen_mc *mc); +int xc_mca_op_inject_v2(xc_interface *xch, unsigned int flags, + xc_cpumap_t cpumap, unsigned int nr_cpus); +#endif + +struct xc_px_val { + uint64_t freq; /* Px core frequency */ + uint64_t residency; /* Px residency time */ + uint64_t count; /* Px transition count */ +}; + +struct xc_px_stat { + uint8_t total; /* total Px states */ + uint8_t usable; /* usable Px states */ + uint8_t last; /* last Px state */ + uint8_t cur; /* current Px state */ + uint64_t *trans_pt; /* Px transition table */ + struct xc_px_val *pt; +}; + +int xc_pm_get_max_px(xc_interface *xch, int cpuid, int *max_px); +int xc_pm_get_pxstat(xc_interface *xch, int cpuid, struct xc_px_stat *pxpt); +int xc_pm_reset_pxstat(xc_interface *xch, int cpuid); + +struct xc_cx_stat { + uint32_t nr; /* entry nr in triggers[]/residencies[], incl C0 */ + uint32_t last; /* last Cx state */ + uint64_t idle_time; /* idle time from boot */ + uint64_t *triggers; /* Cx trigger counts */ + uint64_t *residencies; /* Cx residencies */ + uint32_t nr_pc; /* entry nr in pc[] */ + uint32_t nr_cc; /* entry nr in cc[] */ + uint64_t *pc; /* 1-biased indexing (i.e. excl C0) */ + uint64_t *cc; /* 1-biased indexing (i.e. excl C0) */ +}; +typedef struct xc_cx_stat xc_cx_stat_t; + +int xc_pm_get_max_cx(xc_interface *xch, int cpuid, int *max_cx); +int xc_pm_get_cxstat(xc_interface *xch, int cpuid, struct xc_cx_stat *cxpt); +int xc_pm_reset_cxstat(xc_interface *xch, int cpuid); + +int xc_cpu_online(xc_interface *xch, int cpu); +int xc_cpu_offline(xc_interface *xch, int cpu); +int xc_smt_enable(xc_interface *xch); +int xc_smt_disable(xc_interface *xch); + +/* + * cpufreq para name of this structure named + * same as sysfs file name of native linux + */ +typedef struct xen_userspace xc_userspace_t; +typedef struct xen_ondemand xc_ondemand_t; + +struct xc_get_cpufreq_para { + /* IN/OUT variable */ + uint32_t cpu_num; + uint32_t freq_num; + uint32_t gov_num; + + /* for all governors */ + /* OUT variable */ + uint32_t *affected_cpus; + uint32_t *scaling_available_frequencies; + char *scaling_available_governors; + char scaling_driver[CPUFREQ_NAME_LEN]; + + uint32_t cpuinfo_cur_freq; + uint32_t cpuinfo_max_freq; + uint32_t cpuinfo_min_freq; + uint32_t scaling_cur_freq; + + char scaling_governor[CPUFREQ_NAME_LEN]; + uint32_t scaling_max_freq; + uint32_t scaling_min_freq; + + /* for specific governor */ + union { + xc_userspace_t userspace; + xc_ondemand_t ondemand; + } u; + + int32_t turbo_enabled; +}; + +int xc_get_cpufreq_para(xc_interface *xch, int cpuid, + struct xc_get_cpufreq_para *user_para); +int xc_set_cpufreq_gov(xc_interface *xch, int cpuid, char *govname); +int xc_set_cpufreq_para(xc_interface *xch, int cpuid, + int ctrl_type, int ctrl_value); +int xc_get_cpufreq_avgfreq(xc_interface *xch, int cpuid, int *avg_freq); + +int xc_set_sched_opt_smt(xc_interface *xch, uint32_t value); + +int xc_get_cpuidle_max_cstate(xc_interface *xch, uint32_t *value); +int xc_set_cpuidle_max_cstate(xc_interface *xch, uint32_t value); + +int xc_get_cpuidle_max_csubstate(xc_interface *xch, uint32_t *value); +int xc_set_cpuidle_max_csubstate(xc_interface *xch, uint32_t value); + +int xc_enable_turbo(xc_interface *xch, int cpuid); +int xc_disable_turbo(xc_interface *xch, int cpuid); + +/** + * altp2m operations + */ + +int xc_altp2m_get_domain_state(xc_interface *handle, uint32_t dom, bool *state); +int xc_altp2m_set_domain_state(xc_interface *handle, uint32_t dom, bool state); +int xc_altp2m_set_vcpu_enable_notify(xc_interface *handle, uint32_t domid, + uint32_t vcpuid, xen_pfn_t gfn); +int xc_altp2m_set_vcpu_disable_notify(xc_interface *handle, uint32_t domid, + uint32_t vcpuid); +int xc_altp2m_create_view(xc_interface *handle, uint32_t domid, + xenmem_access_t default_access, uint16_t *view_id); +int xc_altp2m_destroy_view(xc_interface *handle, uint32_t domid, + uint16_t view_id); +/* Switch all vCPUs of the domain to the specified altp2m view */ +int xc_altp2m_switch_to_view(xc_interface *handle, uint32_t domid, + uint16_t view_id); +int xc_altp2m_set_suppress_ve(xc_interface *handle, uint32_t domid, + uint16_t view_id, xen_pfn_t gfn, bool sve); +int xc_altp2m_set_supress_ve_multi(xc_interface *handle, uint32_t domid, + uint16_t view_id, xen_pfn_t first_gfn, + xen_pfn_t last_gfn, bool sve, + xen_pfn_t *error_gfn, int32_t *error_code); +int xc_altp2m_get_suppress_ve(xc_interface *handle, uint32_t domid, + uint16_t view_id, xen_pfn_t gfn, bool *sve); +int xc_altp2m_set_mem_access(xc_interface *handle, uint32_t domid, + uint16_t view_id, xen_pfn_t gfn, + xenmem_access_t access); +int xc_altp2m_set_mem_access_multi(xc_interface *handle, uint32_t domid, + uint16_t view_id, uint8_t *access, + uint64_t *gfns, uint32_t nr); +int xc_altp2m_get_mem_access(xc_interface *handle, uint32_t domid, + uint16_t view_id, xen_pfn_t gfn, + xenmem_access_t *access); +int xc_altp2m_change_gfn(xc_interface *handle, uint32_t domid, + uint16_t view_id, xen_pfn_t old_gfn, + xen_pfn_t new_gfn); +int xc_altp2m_get_vcpu_p2m_idx(xc_interface *handle, uint32_t domid, + uint32_t vcpuid, uint16_t *p2midx); +/* + * Set view visibility for xc_altp2m_switch_to_view and vmfunc. + * Note: If altp2m mode is set to mixed the guest is able to change the view + * visibility and then call vmfunc. + */ +int xc_altp2m_set_visibility(xc_interface *handle, uint32_t domid, + uint16_t view_id, bool visible); + +/** + * Mem paging operations. + * Paging is supported only on the x86 architecture in 64 bit mode, with + * Hardware-Assisted Paging (i.e. Intel EPT, AMD NPT). Moreover, AMD NPT + * support is considered experimental. + */ +int xc_mem_paging_enable(xc_interface *xch, uint32_t domain_id, uint32_t *port); +int xc_mem_paging_disable(xc_interface *xch, uint32_t domain_id); +int xc_mem_paging_resume(xc_interface *xch, uint32_t domain_id); +int xc_mem_paging_nominate(xc_interface *xch, uint32_t domain_id, + uint64_t gfn); +int xc_mem_paging_evict(xc_interface *xch, uint32_t domain_id, uint64_t gfn); +int xc_mem_paging_prep(xc_interface *xch, uint32_t domain_id, uint64_t gfn); +int xc_mem_paging_load(xc_interface *xch, uint32_t domain_id, + uint64_t gfn, void *buffer); + +/** + * Access tracking operations. + * Supported only on Intel EPT 64 bit processors. + */ + +/* + * Set a range of memory to a specific access. + * Allowed types are XENMEM_access_default, XENMEM_access_n, any combination of + * XENMEM_access_ + (rwx), and XENMEM_access_rx2rw + */ +int xc_set_mem_access(xc_interface *xch, uint32_t domain_id, + xenmem_access_t access, uint64_t first_pfn, + uint32_t nr); + +/* + * Set an array of pages to their respective access in the access array. + * The nr parameter specifies the size of the pages and access arrays. + * The same allowed access types as for xc_set_mem_access() apply. + */ +int xc_set_mem_access_multi(xc_interface *xch, uint32_t domain_id, + uint8_t *access, uint64_t *pages, + uint32_t nr); + +/* + * Gets the mem access for the given page (returned in access on success) + */ +int xc_get_mem_access(xc_interface *xch, uint32_t domain_id, + uint64_t pfn, xenmem_access_t *access); + +/* + * Returns the VM_EVENT_INTERFACE version. + */ +int xc_vm_event_get_version(xc_interface *xch); + +/*** + * Monitor control operations. + * + * Enables the VM event monitor ring and returns the mapped ring page. + * This ring is used to deliver mem_access events, as well a set of additional + * events that can be enabled with the xc_monitor_* functions. + * + * Will return NULL on error. + * Caller has to unmap this page when done. + */ +void *xc_monitor_enable(xc_interface *xch, uint32_t domain_id, uint32_t *port); +int xc_monitor_disable(xc_interface *xch, uint32_t domain_id); +int xc_monitor_resume(xc_interface *xch, uint32_t domain_id); +/* + * Get a bitmap of supported monitor events in the form + * (1 << XEN_DOMCTL_MONITOR_EVENT_*). + */ +int xc_monitor_get_capabilities(xc_interface *xch, uint32_t domain_id, + uint32_t *capabilities); +int xc_monitor_write_ctrlreg(xc_interface *xch, uint32_t domain_id, + uint16_t index, bool enable, bool sync, + uint64_t bitmask, bool onchangeonly); +/* + * A list of MSR indices can usually be found in /usr/include/asm/msr-index.h. + * Please consult the Intel/AMD manuals for more information on + * non-architectural indices. + */ +int xc_monitor_mov_to_msr(xc_interface *xch, uint32_t domain_id, uint32_t msr, + bool enable, bool onchangeonly); +int xc_monitor_singlestep(xc_interface *xch, uint32_t domain_id, bool enable); +int xc_monitor_software_breakpoint(xc_interface *xch, uint32_t domain_id, + bool enable); +int xc_monitor_descriptor_access(xc_interface *xch, uint32_t domain_id, + bool enable); +int xc_monitor_guest_request(xc_interface *xch, uint32_t domain_id, + bool enable, bool sync, bool allow_userspace); +/* + * Disables page-walk mem_access events by emulating. If the + * emulation can not be performed then a VM_EVENT_REASON_EMUL_UNIMPLEMENTED + * event will be issued. + */ +int xc_monitor_inguest_pagefault(xc_interface *xch, uint32_t domain_id, + bool disable); +int xc_monitor_debug_exceptions(xc_interface *xch, uint32_t domain_id, + bool enable, bool sync); +int xc_monitor_cpuid(xc_interface *xch, uint32_t domain_id, bool enable); +int xc_monitor_privileged_call(xc_interface *xch, uint32_t domain_id, + bool enable); +int xc_monitor_emul_unimplemented(xc_interface *xch, uint32_t domain_id, + bool enable); +/** + * This function enables / disables emulation for each REP for a + * REP-compatible instruction. + * + * @parm xch a handle to an open hypervisor interface. + * @parm domain_id the domain id one wants to get the node affinity of. + * @parm enable if 0 optimize when possible, else emulate each REP. + * @return 0 on success, -1 on failure. + */ +int xc_monitor_emulate_each_rep(xc_interface *xch, uint32_t domain_id, + bool enable); + +/*** + * Memory sharing operations. + * + * Unles otherwise noted, these calls return 0 on succes, -1 and errno on + * failure. + * + * Sharing is supported only on the x86 architecture in 64 bit mode, with + * Hardware-Assisted Paging (i.e. Intel EPT, AMD NPT). Moreover, AMD NPT + * support is considered experimental. + + * Calls below return ENOSYS if not in the x86_64 architecture. + * Calls below return ENODEV if the domain does not support HAP. + * Calls below return ESRCH if the specified domain does not exist. + * Calls below return EPERM if the caller is unprivileged for this domain. + */ + +/* Turn on/off sharing for the domid, depending on the enable flag. + * + * Returns EXDEV if trying to enable and the domain has had a PCI device + * assigned for passthrough (these two features are mutually exclusive). + * + * When sharing for a domain is turned off, the domain may still reference + * shared pages. Unsharing happens lazily. */ +int xc_memshr_control(xc_interface *xch, + uint32_t domid, + int enable); + +/* Create a communication ring in which the hypervisor will place ENOMEM + * notifications. + * + * ENOMEM happens when unsharing pages: a Copy-on-Write duplicate needs to be + * allocated, and thus the out-of-memory error occurr. + * + * For complete examples on how to plumb a notification ring, look into + * xenpaging or xen-access. + * + * On receipt of a notification, the helper should ensure there is memory + * available to the domain before retrying. + * + * If a domain encounters an ENOMEM condition when sharing and this ring + * has not been set up, the hypervisor will crash the domain. + * + * Fails with: + * EINVAL if port is NULL + * EINVAL if the sharing ring has already been enabled + * ENOSYS if no guest gfn has been specified to host the ring via an hvm param + * EINVAL if the gfn for the ring has not been populated + * ENOENT if the gfn for the ring is paged out, or cannot be unshared + * EINVAL if the gfn for the ring cannot be written to + * EINVAL if the domain is dying + * ENOSPC if an event channel cannot be allocated for the ring + * ENOMEM if memory cannot be allocated for internal data structures + * EINVAL or EACCESS if the request is denied by the security policy + */ + +int xc_memshr_ring_enable(xc_interface *xch, + uint32_t domid, + uint32_t *port); +/* Disable the ring for ENOMEM communication. + * May fail with EINVAL if the ring was not enabled in the first place. + */ +int xc_memshr_ring_disable(xc_interface *xch, + uint32_t domid); + +/* + * Calls below return EINVAL if sharing has not been enabled for the domain + * Calls below return EINVAL if the domain is dying + */ +/* Once a reponse to an ENOMEM notification is prepared, the tool can + * notify the hypervisor to re-schedule the faulting vcpu of the domain with an + * event channel kick and/or this call. */ +int xc_memshr_domain_resume(xc_interface *xch, + uint32_t domid); + +/* Select a page for sharing. + * + * A 64 bit opaque handle will be stored in handle. The hypervisor ensures + * that if the page is modified, the handle will be invalidated, and future + * users of it will fail. If the page has already been selected and is still + * associated to a valid handle, the existing handle will be returned. + * + * May fail with: + * EINVAL if the gfn is not populated or not sharable (mmio, etc) + * ENOMEM if internal data structures cannot be allocated + * E2BIG if the page is being referenced by other subsytems (e.g. qemu) + * ENOENT or EEXIST if there are internal hypervisor errors. + */ +int xc_memshr_nominate_gfn(xc_interface *xch, + uint32_t domid, + unsigned long gfn, + uint64_t *handle); +/* Same as above, but instead of a guest frame number, the input is a grant + * reference provided by the guest. + * + * May fail with EINVAL if the grant reference is invalid. + */ +int xc_memshr_nominate_gref(xc_interface *xch, + uint32_t domid, + grant_ref_t gref, + uint64_t *handle); + +/* The three calls below may fail with + * 10 (or -XENMEM_SHARING_OP_S_HANDLE_INVALID) if the handle passed as source + * is invalid. + * 9 (or -XENMEM_SHARING_OP_C_HANDLE_INVALID) if the handle passed as client is + * invalid. + */ +/* Share two nominated guest pages. + * + * If the call succeeds, both pages will point to the same backing frame (or + * mfn). The hypervisor will verify the handles are still valid, but it will + * not perform any sanity checking on the contens of the pages (the selection + * mechanism for sharing candidates is entirely up to the user-space tool). + * + * After successful sharing, the client handle becomes invalid. Both <domain, + * gfn> tuples point to the same mfn with the same handle, the one specified as + * source. Either 3-tuple can be specified later for further re-sharing. + */ +int xc_memshr_share_gfns(xc_interface *xch, + uint32_t source_domain, + unsigned long source_gfn, + uint64_t source_handle, + uint32_t client_domain, + unsigned long client_gfn, + uint64_t client_handle); + +/* Same as above, but share two grant references instead. + * + * May fail with EINVAL if either grant reference is invalid. + */ +int xc_memshr_share_grefs(xc_interface *xch, + uint32_t source_domain, + grant_ref_t source_gref, + uint64_t source_handle, + uint32_t client_domain, + grant_ref_t client_gref, + uint64_t client_handle); + +/* Allows to add to the guest physmap of the client domain a shared frame + * directly. + * + * May additionally fail with + * 9 (-XENMEM_SHARING_OP_C_HANDLE_INVALID) if the physmap entry for the gfn is + * not suitable. + * ENOMEM if internal data structures cannot be allocated. + * ENOENT if there is an internal hypervisor error. + */ +int xc_memshr_add_to_physmap(xc_interface *xch, + uint32_t source_domain, + unsigned long source_gfn, + uint64_t source_handle, + uint32_t client_domain, + unsigned long client_gfn); + +/* Allows to deduplicate a range of memory of a client domain. Using + * this function is equivalent of calling xc_memshr_nominate_gfn for each gfn + * in the two domains followed by xc_memshr_share_gfns. + * + * May fail with -EINVAL if the source and client domain have different + * memory size or if memory sharing is not enabled on either of the domains. + * May also fail with -ENOMEM if there isn't enough memory available to store + * the sharing metadata before deduplication can happen. + */ +int xc_memshr_range_share(xc_interface *xch, + uint32_t source_domain, + uint32_t client_domain, + uint64_t first_gfn, + uint64_t last_gfn); + +int xc_memshr_fork(xc_interface *xch, + uint32_t source_domain, + uint32_t client_domain, + bool allow_with_iommu, + bool block_interrupts); + +/* + * Note: this function is only intended to be used on short-lived forks that + * haven't yet aquired a lot of memory. In case the fork has a lot of memory + * it is likely more performant to create a new fork with xc_memshr_fork. + * + * With VMs that have a lot of memory this call may block for a long time. + */ +int xc_memshr_fork_reset(xc_interface *xch, uint32_t forked_domain); + +/* Debug calls: return the number of pages referencing the shared frame backing + * the input argument. Should be one or greater. + * + * May fail with EINVAL if there is no backing shared frame for the input + * argument. + */ +int xc_memshr_debug_gfn(xc_interface *xch, + uint32_t domid, + unsigned long gfn); +/* May additionally fail with EINVAL if the grant reference is invalid. */ +int xc_memshr_debug_gref(xc_interface *xch, + uint32_t domid, + grant_ref_t gref); + +/* Audits the share subsystem. + * + * Returns ENOSYS if not supported (may not be compiled into the hypervisor). + * + * Returns the number of errors found during auditing otherwise. May be (should + * be!) zero. + * + * If debugtrace support has been compiled into the hypervisor and is enabled, + * verbose descriptions for the errors are available in the hypervisor console. + */ +int xc_memshr_audit(xc_interface *xch); + +/* Stats reporting. + * + * At any point in time, the following equality should hold for a host: + * + * Let dominfo(d) be the xc_dominfo_t struct filled by a call to + * xc_domain_getinfo(d) + * + * The summation of dominfo(d)->shr_pages for all domains in the system + * should be equal to + * xc_sharing_freed_pages + xc_sharing_used_frames + */ +/* + * This function returns the total number of pages freed by using sharing + * on the system. For example, if two domains contain a single entry in + * their p2m table that points to the same shared page (and no other pages + * in the system are shared), then this function should return 1. + */ +long xc_sharing_freed_pages(xc_interface *xch); + +/* + * This function returns the total number of frames occupied by shared + * pages on the system. This is independent of the number of domains + * pointing at these frames. For example, in the above scenario this + * should return 1. (And dominfo(d) for each of the two domains should return 1 + * as well). + * + * Note that some of these sharing_used_frames may be referenced by + * a single domain page, and thus not realize any savings. The same + * applies to some of the pages counted in dominfo(d)->shr_pages. + */ +long xc_sharing_used_frames(xc_interface *xch); +/*** End sharing interface ***/ + +int xc_flask_load(xc_interface *xc_handle, char *buf, uint32_t size); +int xc_flask_context_to_sid(xc_interface *xc_handle, char *buf, uint32_t size, uint32_t *sid); +int xc_flask_sid_to_context(xc_interface *xc_handle, int sid, char *buf, uint32_t size); +int xc_flask_getenforce(xc_interface *xc_handle); +int xc_flask_setenforce(xc_interface *xc_handle, int mode); +int xc_flask_getbool_byid(xc_interface *xc_handle, int id, char *name, uint32_t size, int *curr, int *pend); +int xc_flask_getbool_byname(xc_interface *xc_handle, char *name, int *curr, int *pend); +int xc_flask_setbool(xc_interface *xc_handle, char *name, int value, int commit); +int xc_flask_add_pirq(xc_interface *xc_handle, unsigned int pirq, char *scontext); +int xc_flask_add_ioport(xc_interface *xc_handle, unsigned long low, unsigned long high, + char *scontext); +int xc_flask_add_iomem(xc_interface *xc_handle, unsigned long low, unsigned long high, + char *scontext); +int xc_flask_add_device(xc_interface *xc_handle, unsigned long device, char *scontext); +int xc_flask_del_pirq(xc_interface *xc_handle, unsigned int pirq); +int xc_flask_del_ioport(xc_interface *xc_handle, unsigned long low, unsigned long high); +int xc_flask_del_iomem(xc_interface *xc_handle, unsigned long low, unsigned long high); +int xc_flask_del_device(xc_interface *xc_handle, unsigned long device); +int xc_flask_access(xc_interface *xc_handle, const char *scon, const char *tcon, + uint16_t tclass, uint32_t req, + uint32_t *allowed, uint32_t *decided, + uint32_t *auditallow, uint32_t *auditdeny, + uint32_t *seqno); +int xc_flask_avc_cachestats(xc_interface *xc_handle, char *buf, int size); +int xc_flask_policyvers(xc_interface *xc_handle); +int xc_flask_avc_hashstats(xc_interface *xc_handle, char *buf, int size); +int xc_flask_getavc_threshold(xc_interface *xc_handle); +int xc_flask_setavc_threshold(xc_interface *xc_handle, int threshold); +int xc_flask_relabel_domain(xc_interface *xch, uint32_t domid, uint32_t sid); + +struct elf_binary; +void xc_elf_set_logfile(xc_interface *xch, struct elf_binary *elf, + int verbose); +/* Useful for callers who also use libelf. */ + +/* + * Execute an image previously loaded with xc_kexec_load(). + * + * Does not return on success. + * + * Fails with: + * ENOENT if the specified image has not been loaded. + */ +int xc_kexec_exec(xc_interface *xch, int type); + +/* + * Find the machine address and size of certain memory areas. + * + * KEXEC_RANGE_MA_CRASH crash area + * KEXEC_RANGE_MA_XEN Xen itself + * KEXEC_RANGE_MA_CPU CPU note for CPU number 'nr' + * KEXEC_RANGE_MA_XENHEAP xenheap + * KEXEC_RANGE_MA_EFI_MEMMAP EFI Memory Map + * KEXEC_RANGE_MA_VMCOREINFO vmcoreinfo + * + * Fails with: + * EINVAL if the range or CPU number isn't valid. + */ +int xc_kexec_get_range(xc_interface *xch, int range, int nr, + uint64_t *size, uint64_t *start); + +/* + * Load a kexec image into memory. + * + * The image may be of type KEXEC_TYPE_DEFAULT (executed on request) + * or KEXEC_TYPE_CRASH (executed on a crash). + * + * The image architecture may be a 32-bit variant of the hypervisor + * architecture (e.g, EM_386 on a x86-64 hypervisor). + * + * Fails with: + * ENOMEM if there is insufficient memory for the new image. + * EINVAL if the image does not fit into the crash area or the entry + * point isn't within one of segments. + * EBUSY if another image is being executed. + */ +int xc_kexec_load(xc_interface *xch, uint8_t type, uint16_t arch, + uint64_t entry_maddr, + uint32_t nr_segments, xen_kexec_segment_t *segments); + +/* + * Unload a kexec image. + * + * This prevents a KEXEC_TYPE_DEFAULT or KEXEC_TYPE_CRASH image from + * being executed. The crash images are not cleared from the crash + * region. + */ +int xc_kexec_unload(xc_interface *xch, int type); + +/* + * Find out whether the image has been succesfully loaded. + * + * The type can be either KEXEC_TYPE_DEFAULT or KEXEC_TYPE_CRASH. + * If zero is returned, that means no image is loaded for the type. + * If one is returned, that means an image is loaded for the type. + * Otherwise, negative return value indicates error. + */ +int xc_kexec_status(xc_interface *xch, int type); + +typedef xenpf_resource_entry_t xc_resource_entry_t; + +/* + * Generic resource operation which contains multiple non-preemptible + * resource access entries that passed to xc_resource_op(). + */ +struct xc_resource_op { + uint64_t result; /* on return, check this field first */ + uint32_t cpu; /* which cpu to run */ + uint32_t nr_entries; /* number of resource entries */ + xc_resource_entry_t *entries; +}; + +typedef struct xc_resource_op xc_resource_op_t; +int xc_resource_op(xc_interface *xch, uint32_t nr_ops, xc_resource_op_t *ops); + +#if defined(__i386__) || defined(__x86_64__) +enum xc_psr_cmt_type { + XC_PSR_CMT_L3_OCCUPANCY, + XC_PSR_CMT_TOTAL_MEM_COUNT, + XC_PSR_CMT_LOCAL_MEM_COUNT, +}; +typedef enum xc_psr_cmt_type xc_psr_cmt_type; + +enum xc_psr_type { + XC_PSR_CAT_L3_CBM = 1, + XC_PSR_CAT_L3_CBM_CODE = 2, + XC_PSR_CAT_L3_CBM_DATA = 3, + XC_PSR_CAT_L2_CBM = 4, + XC_PSR_MBA_THRTL = 5, +}; +typedef enum xc_psr_type xc_psr_type; + +enum xc_psr_feat_type { + XC_PSR_CAT_L3, + XC_PSR_CAT_L2, + XC_PSR_MBA, +}; +typedef enum xc_psr_feat_type xc_psr_feat_type; + +union xc_psr_hw_info { + struct { + uint32_t cos_max; + uint32_t cbm_len; + bool cdp_enabled; + } cat; + + struct { + uint32_t cos_max; + uint32_t thrtl_max; + bool linear; + } mba; +}; +typedef union xc_psr_hw_info xc_psr_hw_info; + +int xc_psr_cmt_attach(xc_interface *xch, uint32_t domid); +int xc_psr_cmt_detach(xc_interface *xch, uint32_t domid); +int xc_psr_cmt_get_domain_rmid(xc_interface *xch, uint32_t domid, + uint32_t *rmid); +int xc_psr_cmt_get_total_rmid(xc_interface *xch, uint32_t *total_rmid); +int xc_psr_cmt_get_l3_upscaling_factor(xc_interface *xch, + uint32_t *upscaling_factor); +int xc_psr_cmt_get_l3_event_mask(xc_interface *xch, uint32_t *event_mask); +int xc_psr_cmt_get_l3_cache_size(xc_interface *xch, uint32_t cpu, + uint32_t *l3_cache_size); +int xc_psr_cmt_get_data(xc_interface *xch, uint32_t rmid, uint32_t cpu, + uint32_t psr_cmt_type, uint64_t *monitor_data, + uint64_t *tsc); +int xc_psr_cmt_enabled(xc_interface *xch); + +int xc_psr_set_domain_data(xc_interface *xch, uint32_t domid, + xc_psr_type type, uint32_t target, + uint64_t data); +int xc_psr_get_domain_data(xc_interface *xch, uint32_t domid, + xc_psr_type type, uint32_t target, + uint64_t *data); +int xc_psr_get_hw_info(xc_interface *xch, uint32_t socket, + xc_psr_feat_type type, xc_psr_hw_info *hw_info); + +int xc_get_cpu_levelling_caps(xc_interface *xch, uint32_t *caps); +int xc_get_cpu_featureset(xc_interface *xch, uint32_t index, + uint32_t *nr_features, uint32_t *featureset); + +int xc_get_cpu_policy_size(xc_interface *xch, uint32_t *nr_leaves, + uint32_t *nr_msrs); +int xc_get_system_cpu_policy(xc_interface *xch, uint32_t index, + uint32_t *nr_leaves, xen_cpuid_leaf_t *leaves, + uint32_t *nr_msrs, xen_msr_entry_t *msrs); +int xc_get_domain_cpu_policy(xc_interface *xch, uint32_t domid, + uint32_t *nr_leaves, xen_cpuid_leaf_t *leaves, + uint32_t *nr_msrs, xen_msr_entry_t *msrs); +int xc_set_domain_cpu_policy(xc_interface *xch, uint32_t domid, + uint32_t nr_leaves, xen_cpuid_leaf_t *leaves, + uint32_t nr_msrs, xen_msr_entry_t *msrs, + uint32_t *err_leaf_p, uint32_t *err_subleaf_p, + uint32_t *err_msr_p); + +uint32_t xc_get_cpu_featureset_size(void); + +enum xc_static_cpu_featuremask { + XC_FEATUREMASK_KNOWN, + XC_FEATUREMASK_SPECIAL, + XC_FEATUREMASK_PV_MAX, + XC_FEATUREMASK_PV_DEF, + XC_FEATUREMASK_HVM_SHADOW_MAX, + XC_FEATUREMASK_HVM_SHADOW_DEF, + XC_FEATUREMASK_HVM_HAP_MAX, + XC_FEATUREMASK_HVM_HAP_DEF, +}; +const uint32_t *xc_get_static_cpu_featuremask(enum xc_static_cpu_featuremask); + +#endif + +int xc_livepatch_upload(xc_interface *xch, + char *name, unsigned char *payload, uint32_t size); + +int xc_livepatch_get(xc_interface *xch, + char *name, + xen_livepatch_status_t *status); + +/* + * Get a number of available payloads and get actual total size of + * the payloads' name and metadata arrays. + * + * This functions is typically executed first before the xc_livepatch_list() + * to obtain the sizes and correctly allocate all necessary data resources. + * + * The return value is zero if the hypercall completed successfully. + * + * If there was an error performing the sysctl operation, the return value + * will contain the hypercall error code value. + */ +int xc_livepatch_list_get_sizes(xc_interface *xch, unsigned int *nr, + uint32_t *name_total_size, + uint32_t *metadata_total_size); + +/* + * The heart of this function is to get an array of the following objects: + * - xen_livepatch_status_t: states and return codes of payloads + * - name: names of payloads + * - len: lengths of corresponding payloads' names + * - metadata: payloads' metadata + * - metadata_len: lengths of corresponding payloads' metadata + * + * However it is complex because it has to deal with the hypervisor + * returning some of the requested data or data being stale + * (another hypercall might alter the list). + * + * The parameters that the function expects to contain data from + * the hypervisor are: 'info', 'name', and 'len'. The 'done' and + * 'left' are also updated with the number of entries filled out + * and respectively the number of entries left to get from hypervisor. + * + * It is expected that the caller of this function will first issue the + * xc_livepatch_list_get_sizes() in order to obtain total sizes of names + * and all metadata as well as the current number of payload entries. + * The total sizes are required and supplied via the 'name_total_size' and + * 'metadata_total_size' parameters. + * + * The 'max' is to be provided by the caller with the maximum number of + * entries that 'info', 'name', 'len', 'metadata' and 'metadata_len' arrays + * can be filled up with. + * + * Each entry in the 'info' array is expected to be of xen_livepatch_status_t + * structure size. + * + * Each entry in the 'name' array may have an arbitrary size. + * + * Each entry in the 'len' array is expected to be of uint32_t size. + * + * Each entry in the 'metadata' array may have an arbitrary size. + * + * Each entry in the 'metadata_len' array is expected to be of uint32_t size. + * + * The return value is zero if the hypercall completed successfully. + * Note that the return value is _not_ the amount of entries filled + * out - that is saved in 'done'. + * + * If there was an error performing the operation, the return value + * will contain an negative -EXX type value. The 'done' and 'left' + * will contain the number of entries that had been succesfully + * retrieved (if any). + */ +int xc_livepatch_list(xc_interface *xch, const unsigned int max, + const unsigned int start, + struct xen_livepatch_status *info, + char *name, uint32_t *len, + const uint32_t name_total_size, + char *metadata, uint32_t *metadata_len, + const uint32_t metadata_total_size, + unsigned int *done, unsigned int *left); + +/* + * The operations are asynchronous and the hypervisor may take a while + * to complete them. The `timeout` offers an option to expire the + * operation if it could not be completed within the specified time + * (in ns). Value of 0 means let hypervisor decide the best timeout. + * The `flags` allows to pass extra parameters to the actions. + */ +int xc_livepatch_apply(xc_interface *xch, char *name, uint32_t timeout, uint32_t flags); +int xc_livepatch_revert(xc_interface *xch, char *name, uint32_t timeout, uint32_t flags); +int xc_livepatch_unload(xc_interface *xch, char *name, uint32_t timeout, uint32_t flags); +int xc_livepatch_replace(xc_interface *xch, char *name, uint32_t timeout, uint32_t flags); +

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