[Xen-devel] [OPTIONAL][PATCH for-4.5 v7 7/7] Add xen-hvm-param

[Don Slutz <dslutz@xxxxxxxxxxx>]

A tool to get and set hvm param.

Signed-off-by: Don Slutz <dslutz@xxxxxxxxxxx>
---
v7:
       Was a later patch.  Still optional.
       Fixed formatting.
       Adjust for drop of VMware RPC.

 .gitignore                 |   1 +
 tools/misc/Makefile        |   7 +-
 tools/misc/xen-hvm-param.c | 169 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 175 insertions(+), 2 deletions(-)
 create mode 100644 tools/misc/xen-hvm-param.c

diff --git a/.gitignore b/.gitignore
index 7a908c4..938b10f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -180,6 +180,7 @@ tools/misc/xen-tmem-list-parse
 tools/misc/xenperf
 tools/misc/xenpm
 tools/misc/xen-hvmctx
+tools/misc/xen-hvm-param
 tools/misc/gtraceview
 tools/misc/gtracestat
 tools/misc/xenlockprof
diff --git a/tools/misc/Makefile b/tools/misc/Makefile
index 266fd16..e7c68df 100644
--- a/tools/misc/Makefile
+++ b/tools/misc/Makefile
@@ -12,7 +12,7 @@ CFLAGS += -I$(XEN_ROOT)/tools/libxc
 HDRS     = $(wildcard *.h)
 
 TARGETS-y := xenperf xenpm xen-tmem-list-parse gtraceview gtracestat 
xenlockprof xenwatchdogd xencov
-TARGETS-$(CONFIG_X86) += xen-detect xen-hvmctx xen-hvmcrash xen-lowmemd 
xen-mfndump
+TARGETS-$(CONFIG_X86) += xen-detect xen-hvmctx xen-hvm-param xen-hvmcrash 
xen-lowmemd xen-mfndump
 TARGETS-$(CONFIG_MIGRATE) += xen-hptool
 TARGETS := $(TARGETS-y)
 
@@ -24,7 +24,7 @@ INSTALL_BIN := $(INSTALL_BIN-y)
 
 INSTALL_SBIN-y := xen-bugtool xen-python-path xenperf xenpm 
xen-tmem-list-parse gtraceview \
        gtracestat xenlockprof xenwatchdogd xen-ringwatch xencov
-INSTALL_SBIN-$(CONFIG_X86) += xen-hvmctx xen-hvmcrash xen-lowmemd xen-mfndump
+INSTALL_SBIN-$(CONFIG_X86) += xen-hvmctx xen-hvm-param xen-hvmcrash 
xen-lowmemd xen-mfndump
 INSTALL_SBIN-$(CONFIG_MIGRATE) += xen-hptool
 INSTALL_SBIN := $(INSTALL_SBIN-y)
 
@@ -59,6 +59,9 @@ clean:
 xen-hvmctx: xen-hvmctx.o
        $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
 
+xen-hvm-param: xen-hvm-param.o
+       $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+
 xen-hvmcrash: xen-hvmcrash.o
        $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
 
diff --git a/tools/misc/xen-hvm-param.c b/tools/misc/xen-hvm-param.c
new file mode 100644
index 0000000..0496e45
--- /dev/null
+++ b/tools/misc/xen-hvm-param.c
@@ -0,0 +1,169 @@
+/*
+ * tools/misc/xen-hvm-param.c
+ *
+ * Copyright (C) 2014 Verizon Corporation
+ *
+ * This file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License Version 2 (GPLv2)
+ * as published by the Free Software Foundation.
+ *
+ * This file 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
+ * General Public License for more details. <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <err.h>
+
+#include <xenctrl.h>
+
+
+int
+main(int argc, char **argv)
+{
+    xc_interface *xch;
+    int domid;
+    int start_param = 0;
+    int end_param = HVM_NR_PARAMS;
+    int param;
+    int ret = 0;
+    int i;
+    char hvm_param_name[HVM_NR_PARAMS][80];
+
+    unsigned long hvm_param = -1;
+
+    if ( (argc < 2) || (argc > 4) )
+        errx(1, "usage: %s domid [param [new]]", argv[0]);
+
+    for ( i = 0; i < HVM_NR_PARAMS; i++ )
+        snprintf(hvm_param_name[i], sizeof(hvm_param_name[i]),
+                 "Unknown %d", i);
+
+    snprintf(hvm_param_name[HVM_PARAM_CALLBACK_IRQ],
+             sizeof(hvm_param_name[HVM_PARAM_CALLBACK_IRQ]), "Callback_Irq");
+    snprintf(hvm_param_name[HVM_PARAM_STORE_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_STORE_PFN]), "Store_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_STORE_EVTCHN],
+             sizeof(hvm_param_name[HVM_PARAM_STORE_EVTCHN]), "Store_Evtchn");
+    snprintf(hvm_param_name[HVM_PARAM_PAE_ENABLED],
+             sizeof(hvm_param_name[HVM_PARAM_PAE_ENABLED]), "Pae_Enabled");
+    snprintf(hvm_param_name[HVM_PARAM_IOREQ_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_IOREQ_PFN]), "Ioreq_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_BUFIOREQ_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_BUFIOREQ_PFN]), "Bufioreq_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_VIRIDIAN],
+             sizeof(hvm_param_name[HVM_PARAM_VIRIDIAN]), "Viridian");
+    snprintf(hvm_param_name[HVM_PARAM_TIMER_MODE],
+             sizeof(hvm_param_name[HVM_PARAM_TIMER_MODE]), "Timer_Mode");
+    snprintf(hvm_param_name[HVM_PARAM_HPET_ENABLED],
+             sizeof(hvm_param_name[HVM_PARAM_HPET_ENABLED]), "Hpet_Enabled");
+    snprintf(hvm_param_name[HVM_PARAM_IDENT_PT],
+             sizeof(hvm_param_name[HVM_PARAM_IDENT_PT]), "Ident_Pt");
+    snprintf(hvm_param_name[HVM_PARAM_DM_DOMAIN],
+             sizeof(hvm_param_name[HVM_PARAM_DM_DOMAIN]), "Dm_Domain");
+    snprintf(hvm_param_name[HVM_PARAM_ACPI_S_STATE],
+             sizeof(hvm_param_name[HVM_PARAM_ACPI_S_STATE]), "Acpi_S_State");
+    snprintf(hvm_param_name[HVM_PARAM_VM86_TSS],
+             sizeof(hvm_param_name[HVM_PARAM_VM86_TSS]), "Vm86_Tss");
+    snprintf(hvm_param_name[HVM_PARAM_VPT_ALIGN],
+             sizeof(hvm_param_name[HVM_PARAM_VPT_ALIGN]), "Vpt_Align");
+    snprintf(hvm_param_name[HVM_PARAM_CONSOLE_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_CONSOLE_PFN]), "Console_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_CONSOLE_EVTCHN],
+             sizeof(hvm_param_name[HVM_PARAM_CONSOLE_EVTCHN]),
+             "Console_Evtchn");
+    snprintf(hvm_param_name[HVM_PARAM_ACPI_IOPORTS_LOCATION],
+             sizeof(hvm_param_name[HVM_PARAM_ACPI_IOPORTS_LOCATION]),
+             "Acpi_Ioports_Location");
+    snprintf(hvm_param_name[HVM_PARAM_MEMORY_EVENT_CR0],
+             sizeof(hvm_param_name[HVM_PARAM_MEMORY_EVENT_CR0]),
+             "Memory_Event_Cr0");
+    snprintf(hvm_param_name[HVM_PARAM_MEMORY_EVENT_CR3],
+             sizeof(hvm_param_name[HVM_PARAM_MEMORY_EVENT_CR3]),
+             "Memory_Event_Cr3");
+    snprintf(hvm_param_name[HVM_PARAM_MEMORY_EVENT_CR4],
+             sizeof(hvm_param_name[HVM_PARAM_MEMORY_EVENT_CR4]),
+             "Memory_Event_Cr4");
+    snprintf(hvm_param_name[HVM_PARAM_MEMORY_EVENT_INT3],
+             sizeof(hvm_param_name[HVM_PARAM_MEMORY_EVENT_INT3]),
+             "Memory_Event_Int3");
+    snprintf(hvm_param_name[HVM_PARAM_NESTEDHVM],
+             sizeof(hvm_param_name[HVM_PARAM_NESTEDHVM]), "Nestedhvm");
+    snprintf(hvm_param_name[HVM_PARAM_MEMORY_EVENT_SINGLE_STEP],
+             sizeof(hvm_param_name[HVM_PARAM_MEMORY_EVENT_SINGLE_STEP]),
+             "Memory_Event_Single_Step");
+    snprintf(hvm_param_name[HVM_PARAM_BUFIOREQ_EVTCHN],
+             sizeof(hvm_param_name[HVM_PARAM_BUFIOREQ_EVTCHN]),
+             "Bufioreq_Evtchn");
+    snprintf(hvm_param_name[HVM_PARAM_PAGING_RING_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_PAGING_RING_PFN]),
+             "Paging_Ring_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_ACCESS_RING_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_ACCESS_RING_PFN]),
+             "Access_Ring_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_SHARING_RING_PFN],
+             sizeof(hvm_param_name[HVM_PARAM_SHARING_RING_PFN]),
+             "Sharing_Ring_Pfn");
+    snprintf(hvm_param_name[HVM_PARAM_VMWARE_HW],
+             sizeof(hvm_param_name[HVM_PARAM_VMWARE_HW]), "Vmware_Hw");
+
+    xch = xc_interface_open(0, 0, 0);
+    if ( !xch )
+        err(1, "failed to open control interface");
+
+    domid = atoi(argv[1]);
+    if ( argc > 2 )
+    {
+        start_param = strtol(argv[2], NULL, 0);
+        end_param = start_param + 1;
+    }
+
+    for ( param = start_param; param < end_param; param++ )
+    {
+        ret = xc_get_hvm_param(xch, domid, param, &hvm_param);
+        if ( ret )
+            err(1, "failed to get hvm param %d for domid %d", param, domid);
+        else
+        {
+            if ( argc == 4 )
+            {
+                long new = strtol(argv[3], NULL, 0);
+
+                ret = xc_set_hvm_param(xch, domid, param, new);
+                if ( ret )
+                    err(1, "failed to set hvm param %d for domid %d", param,
+                        domid);
+                else if ( (param >= 0) && (param < HVM_NR_PARAMS) )
+                    printf("hvm_param(%s)=0x%lx(%ld) was 0x%lx(%ld)\n",
+                           hvm_param_name[param], new, new, hvm_param,
+                           hvm_param);
+                else
+                    printf("hvm_param(%d)=0x%lx(%ld) was 0x%lx(%ld)\n",
+                           param, new, new, hvm_param, hvm_param);
+            }
+            else
+            {
+                if ( (param >= 0) && (param < HVM_NR_PARAMS) )
+                    printf("hvm_param(%s)=0x%lx(%ld)\n",
+                           hvm_param_name[param], hvm_param, hvm_param);
+                else
+                    printf("hvm_param(%d)=0x%lx(%ld)\n", param, hvm_param,
+                           hvm_param);
+            }
+        }
+    }
+    xc_interface_close(xch);
+
+    return ret;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
1.8.4


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