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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH, resend] x86: enable port accesses with (almost) full register context
This helped HP getting certain system management software going (in
dom0) that triggers SMIs and depends upon other than port number
and data register values being visible to the SMI handler.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Index: 2006-09-21/xen/arch/x86/domain_build.c
===================================================================
--- 2006-09-21.orig/xen/arch/x86/domain_build.c 2006-09-20 13:19:25.000000000
+0200
+++ 2006-09-21/xen/arch/x86/domain_build.c 2006-09-21 10:56:11.000000000
+0200
@@ -33,6 +33,11 @@
extern unsigned long initial_images_nrpages(void);
extern void discard_initial_images(void);
+/* I/O-port Xen-enforced or admin-specified access control. */
+struct rangeset *ioport_caps = NULL;
+/* I/O-port admin-specified non-special access requirements. */
+struct rangeset *ioport_emul = NULL;
+
static long dom0_nrpages, dom0_min_nrpages, dom0_max_nrpages = LONG_MAX;
/*
@@ -81,6 +86,12 @@ integer_param("dom0_max_vcpus", opt_dom0
static unsigned int opt_dom0_shadow;
boolean_param("dom0_shadow", opt_dom0_shadow);
+static char opt_ioports_noemul[200] = "";
+string_param("ioports_noemul", opt_ioports_noemul);
+
+static char opt_ioports_disable[200] = "";
+string_param("ioports_disable", opt_ioports_disable);
+
static char opt_dom0_ioports_disable[200] = "";
string_param("dom0_ioports_disable", opt_dom0_ioports_disable);
@@ -149,10 +160,10 @@ static unsigned long compute_dom0_nr_pa
return dom0_nrpages;
}
-static void process_dom0_ioports_disable(void)
+static void process_ioports(char *opt)
{
unsigned long io_from, io_to;
- char *t, *u, *s = opt_dom0_ioports_disable;
+ char *t, *u, *s = opt;
if ( *s == '\0' )
return;
@@ -164,7 +175,9 @@ static void process_dom0_ioports_disable
{
parse_error:
printk("Invalid ioport range <%s> "
- "in dom0_ioports_disable, skipping\n", t);
+ "in %sioports_%s, skipping\n", t,
+ opt == opt_dom0_ioports_disable ? "dom0_" : "",
+ opt != opt_ioports_noemul ? "disable" : "noemul");
continue;
}
@@ -178,11 +191,26 @@ static void process_dom0_ioports_disable
if ( (*u != '\0') || (io_to < io_from) || (io_to >= 65536) )
goto parse_error;
- printk("Disabling dom0 access to ioport range %04lx-%04lx\n",
- io_from, io_to);
+ if ( opt != opt_ioports_noemul )
+ {
+ printk("Disabling %saccess to ioport range %04lx-%04lx\n",
+ opt != opt_ioports_disable ? "dom0 " : "",
+ io_from, io_to);
- if ( ioports_deny_access(dom0, io_from, io_to) != 0 )
- BUG();
+ if ( opt == opt_ioports_disable
+ && ioports_deny_access_all(io_from, io_to) != 0 )
+ BUG();
+ if ( ioports_deny_access(dom0, io_from, io_to) != 0 )
+ BUG();
+ }
+ else
+ {
+ printk("Setting non-emulated access for ioport range
%04lx-%04lx\n",
+ io_from, io_to);
+
+ if ( ioports_set_noemul(io_from, io_to) != 0 )
+ BUG();
+ }
}
}
@@ -843,6 +871,13 @@ int construct_dom0(struct domain *d,
rc = 0;
+ /* Command-line I/O ranges. */
+ ioport_caps = rangeset_new(NULL,
+ "global I/O Port access control",
+ RANGESETF_prettyprint_hex);
+ BUG_ON(!ioport_caps);
+ rc |= ioports_permit_access_all(0, 0xFFFF);
+
/* DOM0 is permitted full I/O capabilities. */
rc |= ioports_permit_access(dom0, 0, 0xFFFF);
rc |= iomem_permit_access(dom0, 0UL, ~0UL);
@@ -852,15 +887,20 @@ int construct_dom0(struct domain *d,
* Modify I/O port access permissions.
*/
/* Master Interrupt Controller (PIC). */
+ rc |= ioports_deny_access_all(0x20, 0x21);
rc |= ioports_deny_access(dom0, 0x20, 0x21);
/* Slave Interrupt Controller (PIC). */
+ rc |= ioports_deny_access_all(0xA0, 0xA1);
rc |= ioports_deny_access(dom0, 0xA0, 0xA1);
/* Interval Timer (PIT). */
+ rc |= ioports_deny_access_all(0x40, 0x43);
rc |= ioports_deny_access(dom0, 0x40, 0x43);
/* PIT Channel 2 / PC Speaker Control. */
+ rc |= ioports_deny_access_all(0x61, 0x61);
rc |= ioports_deny_access(dom0, 0x61, 0x61);
/* Command-line I/O ranges. */
- process_dom0_ioports_disable();
+ process_ioports(opt_ioports_disable);
+ process_ioports(opt_dom0_ioports_disable);
/*
* Modify I/O memory access permissions.
@@ -879,6 +919,14 @@ int construct_dom0(struct domain *d,
rc |= iomem_deny_access(dom0, mfn, mfn);
}
+ /* Command-line I/O ranges requiring full register context access. */
+ ioport_emul = rangeset_new(NULL,
+ "I/O Port emulation control",
+ RANGESETF_prettyprint_hex);
+ BUG_ON(!ioport_emul);
+ rc |= ioports_set_emul(0, 0xFFFF);
+ process_ioports(opt_ioports_noemul);
+
BUG_ON(rc != 0);
return 0;
Index: 2006-09-21/xen/arch/x86/sysctl.c
===================================================================
--- 2006-09-21.orig/xen/arch/x86/sysctl.c 2006-08-28 08:32:37.000000000
+0200
+++ 2006-09-21/xen/arch/x86/sysctl.c 2006-09-21 10:56:11.000000000 +0200
@@ -57,6 +57,23 @@ long arch_do_sysctl(
}
break;
+ case XEN_SYSCTL_ioport_emulation:
+ {
+ unsigned int fp = sysctl->u.ioport_emulation.first_port;
+ unsigned int np = sysctl->u.ioport_emulation.nr_ports;
+
+ ret = -EINVAL;
+ if ( (fp + np) > 65536 )
+ break;
+
+ if ( np == 0 )
+ ret = 0;
+ else if ( sysctl->u.ioport_emulation.emulate )
+ ret = ioports_set_emul(fp, fp + np - 1);
+ else
+ ret = ioports_set_noemul(fp, fp + np - 1);
+ }
+ break;
default:
ret = -ENOSYS;
Index: 2006-09-21/xen/arch/x86/traps.c
===================================================================
--- 2006-09-21.orig/xen/arch/x86/traps.c 2006-09-20 13:19:25.000000000
+0200
+++ 2006-09-21/xen/arch/x86/traps.c 2006-09-21 11:02:36.000000000 +0200
@@ -985,9 +985,20 @@ static inline int admin_io_okay(
return ioports_access_permitted(v->domain, port, port + bytes - 1);
}
+typedef unsigned long io_emul_stub_t(struct cpu_user_regs *)
__attribute__((__regparm__(1)));
+long io_emul_stub_offset = 0, io_emul_insn_offset = 0;
+
+/* Can the I/O access be carried out without full register context? */
+static inline int normal_io_okay(
+ unsigned int port, unsigned int bytes)
+{
+ return ioports_emul(port, port + bytes - 1);
+}
+
/* Check admin limits. Silently fail the access if it is disallowed. */
static inline unsigned char inb_user(
- unsigned int port, struct vcpu *v, struct cpu_user_regs *regs)
+ unsigned int port, io_emul_stub_t *stub,
+ struct vcpu *v, struct cpu_user_regs *regs)
{
/*
* Allow read access to port 0x61. Bit 4 oscillates with period 30us, and
@@ -997,18 +1008,54 @@ static inline unsigned char inb_user(
* but there's not really a good reason to do so.
*/
if ( admin_io_okay(port, 1, v, regs) || (port == 0x61) )
- return inb(port);
+ return !stub || normal_io_okay(port, 1) ? inb(port) : stub(regs);
return ~0;
}
-//#define inb_user(_p, _d, _r) (admin_io_okay(_p, 1, _d, _r) ? inb(_p) : ~0)
-#define inw_user(_p, _d, _r) (admin_io_okay(_p, 2, _d, _r) ? inw(_p) : ~0)
-#define inl_user(_p, _d, _r) (admin_io_okay(_p, 4, _d, _r) ? inl(_p) : ~0)
-#define outb_user(_v, _p, _d, _r) \
- (admin_io_okay(_p, 1, _d, _r) ? outb(_v, _p) : ((void)0))
-#define outw_user(_v, _p, _d, _r) \
- (admin_io_okay(_p, 2, _d, _r) ? outw(_v, _p) : ((void)0))
-#define outl_user(_v, _p, _d, _r) \
- (admin_io_okay(_p, 4, _d, _r) ? outl(_v, _p) : ((void)0))
+
+static inline unsigned short inw_user(
+ unsigned int port, io_emul_stub_t *stub,
+ struct vcpu *v, struct cpu_user_regs *regs)
+{
+ if ( admin_io_okay(port, 2, v, regs) )
+ return !stub || normal_io_okay(port, 2) ? inw(port) : stub(regs);
+ return ~0;
+}
+
+static inline unsigned int inl_user(
+ unsigned int port, io_emul_stub_t *stub,
+ struct vcpu *v, struct cpu_user_regs *regs)
+{
+ if ( admin_io_okay(port, 4, v, regs) )
+ return !stub || normal_io_okay(port, 4) ? inl(port) : stub(regs);
+ return ~0;
+}
+
+static inline void outb_user(
+ unsigned char value, unsigned int port,
+ io_emul_stub_t *stub,
+ struct vcpu *v, struct cpu_user_regs *regs)
+{
+ if ( admin_io_okay(port, 1, v, regs) )
+ !stub || normal_io_okay(port, 1) ? outb(value, port) :
(void)stub(regs);
+}
+
+static inline void outw_user(
+ unsigned short value, unsigned int port,
+ io_emul_stub_t *stub,
+ struct vcpu *v, struct cpu_user_regs *regs)
+{
+ if ( admin_io_okay(port, 2, v, regs) )
+ !stub || normal_io_okay(port, 2) ? outw(value, port) :
(void)stub(regs);
+}
+
+static inline void outl_user(
+ unsigned int value, unsigned int port,
+ io_emul_stub_t *stub,
+ struct vcpu *v, struct cpu_user_regs *regs)
+{
+ if ( admin_io_okay(port, 4, v, regs) )
+ !stub || normal_io_okay(port, 4) ? outl(value, port) :
(void)stub(regs);
+}
/* Instruction fetch with error handling. */
#define insn_fetch(_type, _size, cs, eip) \
@@ -1029,6 +1076,8 @@ static int emulate_privileged_op(struct
u8 opcode, modrm_reg = 0, modrm_rm = 0, rep_prefix = 0;
unsigned int port, i, op_bytes = 4, data, rc;
u32 l, h;
+ io_emul_stub_t *stub;
+ char *insn;
/* Legacy prefixes. */
for ( i = 0; i < 8; i++ )
@@ -1086,13 +1135,13 @@ static int emulate_privileged_op(struct
switch ( op_bytes )
{
case 1:
- data = (u8)inb_user((u16)regs->edx, v, regs);
+ data = (u8)inb_user((u16)regs->edx, NULL, v, regs);
break;
case 2:
- data = (u16)inw_user((u16)regs->edx, v, regs);
+ data = (u16)inw_user((u16)regs->edx, NULL, v, regs);
break;
case 4:
- data = (u32)inl_user((u16)regs->edx, v, regs);
+ data = (u32)inl_user((u16)regs->edx, NULL, v, regs);
break;
}
if ( (rc = copy_to_user((void *)regs->edi, &data, op_bytes)) != 0 )
@@ -1118,13 +1167,13 @@ static int emulate_privileged_op(struct
switch ( op_bytes )
{
case 1:
- outb_user((u8)data, (u16)regs->edx, v, regs);
+ outb_user((u8)data, (u16)regs->edx, NULL, v, regs);
break;
case 2:
- outw_user((u16)data, (u16)regs->edx, v, regs);
+ outw_user((u16)data, (u16)regs->edx, NULL, v, regs);
break;
case 4:
- outl_user((u32)data, (u16)regs->edx, v, regs);
+ outl_user((u32)data, (u16)regs->edx, NULL, v, regs);
break;
}
regs->esi += (int)((regs->eflags & EF_DF) ? -op_bytes : op_bytes);
@@ -1142,27 +1191,33 @@ static int emulate_privileged_op(struct
}
/* I/O Port and Interrupt Flag instructions. */
+ insn = (char *)get_stack_bottom();
+ stub = (io_emul_stub_t *)(insn + io_emul_stub_offset);
+ insn += io_emul_insn_offset;
+ *insn++ = op_bytes != 2 ? 0x90 : 0x66;
+ *insn++ = opcode;
switch ( opcode )
{
case 0xe4: /* IN imm8,%al */
op_bytes = 1;
case 0xe5: /* IN imm8,%eax */
port = insn_fetch(u8, 1, cs, eip);
+ *insn = port;
exec_in:
if ( !guest_io_okay(port, op_bytes, v, regs) )
goto fail;
switch ( op_bytes )
{
case 1:
- regs->eax &= ~0xffUL;
- regs->eax |= (u8)inb_user(port, v, regs);
+ res = regs->eax & ~0xffUL;
+ regs->eax = res | (u8)inb_user(port, stub, v, regs);
break;
case 2:
- regs->eax &= ~0xffffUL;
- regs->eax |= (u16)inw_user(port, v, regs);
+ res = regs->eax & ~0xffffUL;
+ regs->eax = res | (u16)inw_user(port, stub, v, regs);
break;
case 4:
- regs->eax = (u32)inl_user(port, v, regs);
+ regs->eax = (u32)inl_user(port, stub, v, regs);
break;
}
goto done;
@@ -1171,25 +1226,27 @@ static int emulate_privileged_op(struct
op_bytes = 1;
case 0xed: /* IN %dx,%eax */
port = (u16)regs->edx;
+ *insn = 0x90;
goto exec_in;
case 0xe6: /* OUT %al,imm8 */
op_bytes = 1;
case 0xe7: /* OUT %eax,imm8 */
port = insn_fetch(u8, 1, cs, eip);
+ *insn = port;
exec_out:
if ( !guest_io_okay(port, op_bytes, v, regs) )
goto fail;
switch ( op_bytes )
{
case 1:
- outb_user((u8)regs->eax, port, v, regs);
+ outb_user((u8)regs->eax, port, stub, v, regs);
break;
case 2:
- outw_user((u16)regs->eax, port, v, regs);
+ outw_user((u16)regs->eax, port, stub, v, regs);
break;
case 4:
- outl_user((u32)regs->eax, port, v, regs);
+ outl_user((u32)regs->eax, port, stub, v, regs);
break;
}
goto done;
@@ -1198,6 +1255,7 @@ static int emulate_privileged_op(struct
op_bytes = 1;
case 0xef: /* OUT %eax,%dx */
port = (u16)regs->edx;
+ *insn = 0x90;
goto exec_out;
case 0xfa: /* CLI */
Index: 2006-09-21/xen/arch/x86/x86_32/Makefile
===================================================================
--- 2006-09-21.orig/xen/arch/x86/x86_32/Makefile 2006-04-06
10:58:00.000000000 +0200
+++ 2006-09-21/xen/arch/x86/x86_32/Makefile 2006-09-21 10:56:11.000000000
+0200
@@ -1,5 +1,6 @@
obj-y += domain_page.o
obj-y += entry.o
+obj-y += io.o
obj-y += mm.o
obj-y += seg_fixup.o
obj-y += traps.o
Index: 2006-09-21/xen/arch/x86/x86_32/io.S
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ 2006-09-21/xen/arch/x86/x86_32/io.S 2006-09-21 10:56:11.000000000 +0200
@@ -0,0 +1,42 @@
+/*
+ * Special (full-context) I/O handling routines.
+ *
+ * Copyright (c) 2006, Novell, Inc.
+ */
+
+#include <xen/config.h>
+#include <asm/asm_defns.h>
+
+ENTRY(save_host_restore_guest)
+ movl (%esp), %ecx
+ movl %eax, (%esp)
+ movl UREGS_edx(%eax), %edx
+ pushl %ebx
+ movl UREGS_ebx(%eax), %ebx
+ pushl %ebp
+ movl UREGS_ebp(%eax), %ebp
+ pushl %esi
+ movl UREGS_esi(%eax), %esi
+ pushl %edi
+ movl UREGS_edi(%eax), %edi
+ pushl %ecx
+ movl UREGS_ecx(%eax), %ecx
+ movl UREGS_eax(%eax), %eax
+ ret
+
+ENTRY(save_guest_restore_host)
+ pushl %edx
+ movl 5*4(%esp), %edx
+ movl %eax, UREGS_eax(%edx)
+ popl UREGS_edx(%edx)
+ movl %edi, UREGS_edi(%edx)
+ popl %edi
+ movl %esi, UREGS_esi(%edx)
+ popl %esi
+ movl %ebp, UREGS_ebp(%edx)
+ popl %ebp
+ movl %ebx, UREGS_ebx(%edx)
+ popl %ebx
+ movl %ecx, UREGS_ecx(%edx)
+ popl %ecx
+ ret
Index: 2006-09-21/xen/arch/x86/x86_32/traps.c
===================================================================
--- 2006-09-21.orig/xen/arch/x86/x86_32/traps.c 2006-09-11 09:06:11.000000000
+0200
+++ 2006-09-21/xen/arch/x86/x86_32/traps.c 2006-09-21 10:56:11.000000000
+0200
@@ -13,6 +13,7 @@
#include <xen/nmi.h>
#include <asm/current.h>
#include <asm/flushtlb.h>
+#include <asm/io.h>
#include <asm/hvm/hvm.h>
#include <asm/hvm/support.h>
@@ -242,6 +243,7 @@ fastcall void smp_deferred_nmi(struct cp
void __init percpu_traps_init(void)
{
struct tss_struct *tss = &doublefault_tss;
+ char *stack_bottom, *stack;
asmlinkage int hypercall(void);
if ( smp_processor_id() != 0 )
@@ -275,6 +277,28 @@ void __init percpu_traps_init(void)
(unsigned long)tss, 235, 9);
set_task_gate(TRAP_double_fault, __DOUBLEFAULT_TSS_ENTRY<<3);
+
+ /*
+ * Stub for full-context I/O emulation.
+ */
+ stack_bottom = (char *)get_stack_bottom();
+ stack = (char *)((unsigned long)stack_bottom & ~(STACK_SIZE - 1));
+ if ( !io_emul_stub_offset )
+ io_emul_stub_offset = stack - stack_bottom;
+ else
+ BUG_ON(io_emul_stub_offset != stack - stack_bottom);
+ /* call save_host_restore_guest */
+ stack[0] = 0xe8;
+ *(s32*)&stack[1] = (char *)save_host_restore_guest - &stack[5];
+ stack += 5;
+ if ( !io_emul_insn_offset )
+ io_emul_insn_offset = stack - stack_bottom;
+ else
+ BUG_ON(io_emul_insn_offset != stack - stack_bottom);
+ stack += 3; /* operand size prefix, opcode, immediate */
+ /* jmp save_guest_restore_host */
+ stack[0] = 0xe9;
+ *(s32*)&stack[1] = (char *)save_guest_restore_host - &stack[5];
}
void init_int80_direct_trap(struct vcpu *v)
Index: 2006-09-21/xen/arch/x86/x86_64/Makefile
===================================================================
--- 2006-09-21.orig/xen/arch/x86/x86_64/Makefile 2006-04-06
10:58:00.000000000 +0200
+++ 2006-09-21/xen/arch/x86/x86_64/Makefile 2006-09-21 10:56:11.000000000
+0200
@@ -1,3 +1,4 @@
obj-y += entry.o
+obj-y += io.o
obj-y += mm.o
obj-y += traps.o
Index: 2006-09-21/xen/arch/x86/x86_64/io.S
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ 2006-09-21/xen/arch/x86/x86_64/io.S 2006-09-21 10:56:11.000000000 +0200
@@ -0,0 +1,62 @@
+/*
+ * Special (full-context) I/O handling routines.
+ *
+ * Copyright (c) 2006, Novell, Inc.
+ */
+
+#include <xen/config.h>
+#include <asm/asm_defns.h>
+
+ENTRY(save_host_restore_guest)
+ movq (%rsp), %rcx
+ movq %rdi, (%rsp)
+ movq UREGS_rdx(%rdi), %rdx
+ pushq %rbx
+ movq UREGS_rax(%rdi), %rax
+ movq UREGS_rbx(%rdi), %rbx
+ pushq %rbp
+ movq UREGS_rsi(%rdi), %rsi
+ movq UREGS_rbp(%rdi), %rbp
+ pushq %r12
+ movq UREGS_r8(%rdi), %r8
+ movq UREGS_r12(%rdi), %r12
+ pushq %r13
+ movq UREGS_r9(%rdi), %r9
+ movq UREGS_r13(%rdi), %r13
+ pushq %r14
+ movq UREGS_r10(%rdi), %r10
+ movq UREGS_r14(%rdi), %r14
+ pushq %r15
+ movq UREGS_r11(%rdi), %r11
+ movq UREGS_r15(%rdi), %r15
+ pushq %rcx
+ movq UREGS_rcx(%rdi), %rcx
+ movq UREGS_rdi(%rdi), %rdi
+ ret
+
+ENTRY(save_guest_restore_host)
+ pushq %rdi
+ movq 7*8(%rsp), %rdi
+ movq %rax, UREGS_rax(%rdi)
+ popq UREGS_rdi(%rdi)
+ movq %r15, UREGS_r15(%rdi)
+ movq %r11, UREGS_r11(%rdi)
+ popq %r15
+ movq %r14, UREGS_r14(%rdi)
+ movq %r10, UREGS_r10(%rdi)
+ popq %r14
+ movq %r13, UREGS_r13(%rdi)
+ movq %r9, UREGS_r9(%rdi)
+ popq %r13
+ movq %r12, UREGS_r12(%rdi)
+ movq %r8, UREGS_r8(%rdi)
+ popq %r12
+ movq %rbp, UREGS_rbp(%rdi)
+ movq %rsi, UREGS_rsi(%rdi)
+ popq %rbp
+ movq %rbx, UREGS_rbx(%rdi)
+ movq %rdx, UREGS_rdx(%rdi)
+ popq %rbx
+ movq %rcx, UREGS_rcx(%rdi)
+ popq %rcx
+ ret
Index: 2006-09-21/xen/arch/x86/x86_64/traps.c
===================================================================
--- 2006-09-21.orig/xen/arch/x86/x86_64/traps.c 2006-09-20 13:19:25.000000000
+0200
+++ 2006-09-21/xen/arch/x86/x86_64/traps.c 2006-09-21 10:56:11.000000000
+0200
@@ -14,6 +14,7 @@
#include <xen/nmi.h>
#include <asm/current.h>
#include <asm/flushtlb.h>
+#include <asm/io.h>
#include <asm/msr.h>
#include <asm/page.h>
#include <asm/shadow.h>
@@ -331,6 +332,29 @@ void __init percpu_traps_init(void)
wrmsr(MSR_STAR, 0, (FLAT_RING3_CS32<<16) | __HYPERVISOR_CS);
wrmsr(MSR_SYSCALL_MASK, EF_VM|EF_RF|EF_NT|EF_DF|EF_IE|EF_TF, 0U);
+
+ /*
+ * Stub for full-context I/O emulation.
+ */
+
+ /* Skip the compatibility-mode entry trampoline. */
+ stack += 26;
+ if ( !io_emul_stub_offset )
+ io_emul_stub_offset = stack - stack_bottom;
+ else
+ BUG_ON(io_emul_stub_offset != stack - stack_bottom);
+ /* call save_host_restore_guest */
+ stack[0] = 0xe8;
+ *(s32*)&stack[1] = (char *)save_host_restore_guest - &stack[5];
+ stack += 5;
+ if ( !io_emul_insn_offset )
+ io_emul_insn_offset = stack - stack_bottom;
+ else
+ BUG_ON(io_emul_insn_offset != stack - stack_bottom);
+ stack += 3; /* operand size prefix, opcode, immediate */
+ /* jmp save_guest_restore_host */
+ stack[0] = 0xe9;
+ *(s32*)&stack[1] = (char *)save_guest_restore_host - &stack[5];
}
static long register_guest_callback(struct callback_register *reg)
Index: 2006-09-21/xen/include/asm-x86/io.h
===================================================================
--- 2006-09-21.orig/xen/include/asm-x86/io.h 2006-08-21 18:02:24.000000000
+0200
+++ 2006-09-21/xen/include/asm-x86/io.h 2006-09-21 10:56:11.000000000 +0200
@@ -50,4 +50,10 @@ __OUT(b,"b",char)
__OUT(w,"w",short)
__OUT(l,,int)
+struct cpu_user_regs;
+void save_host_restore_guest(struct cpu_user_regs *)
__attribute__((__regparm__(1)));
+unsigned long save_guest_restore_host(unsigned long)
__attribute__((__regparm__(1)));
+
+extern long io_emul_stub_offset, io_emul_insn_offset;
+
#endif
Index: 2006-09-21/xen/include/asm-x86/iocap.h
===================================================================
--- 2006-09-21.orig/xen/include/asm-x86/iocap.h 2006-01-03 14:25:46.000000000
+0100
+++ 2006-09-21/xen/include/asm-x86/iocap.h 2006-09-21 10:56:11.000000000
+0200
@@ -7,6 +7,15 @@
#ifndef __X86_IOCAP_H__
#define __X86_IOCAP_H__
+extern struct rangeset *ioport_caps, *ioport_emul;
+
+#define ioports_permit_access_all(s, e) \
+ rangeset_add_range(ioport_caps, s, e)
+#define ioports_deny_access_all(s, e) \
+ rangeset_remove_range(ioport_caps, s, e)
+#define ioports_any_access_permitted(s, e) \
+ rangeset_contains_range(ioport_caps, s, e)
+
#define ioports_permit_access(d, s, e) \
rangeset_add_range((d)->arch.ioport_caps, s, e)
#define ioports_deny_access(d, s, e) \
@@ -14,6 +23,13 @@
#define ioports_access_permitted(d, s, e) \
rangeset_contains_range((d)->arch.ioport_caps, s, e)
+#define ioports_set_emul(s, e) \
+ rangeset_add_range(ioport_emul, s, e)
+#define ioports_set_noemul(s, e) \
+ rangeset_remove_range(ioport_emul, s, e)
+#define ioports_emul(s, e) \
+ rangeset_contains_range(ioport_emul, s, e)
+
#define cache_flush_permitted(d) \
(!rangeset_is_empty((d)->iomem_caps))
Index: 2006-09-21/xen/include/public/sysctl.h
===================================================================
--- 2006-09-21.orig/xen/include/public/sysctl.h 2006-09-11 09:06:11.000000000
+0200
+++ 2006-09-21/xen/include/public/sysctl.h 2006-09-21 10:56:11.000000000
+0200
@@ -140,6 +140,15 @@ struct xen_sysctl_getdomaininfolist {
typedef struct xen_sysctl_getdomaininfolist xen_sysctl_getdomaininfolist_t;
DEFINE_XEN_GUEST_HANDLE(xen_sysctl_getdomaininfolist_t);
+#define XEN_SYSCTL_ioport_emulation 7
+struct xen_sysctl_ioport_emulation {
+ uint32_t first_port; /* first port int range */
+ uint32_t nr_ports; /* size of port range */
+ uint8_t emulate; /* emulate access to range? */
+};
+typedef struct xen_sysctl_ioport_emulation xen_sysctl_ioport_emulation_t;
+DEFINE_XEN_GUEST_HANDLE(xen_sysctl_ioport_emulation_t);
+
struct xen_sysctl {
uint32_t cmd;
uint32_t interface_version; /* XEN_SYSCTL_INTERFACE_VERSION */
@@ -150,6 +159,7 @@ struct xen_sysctl {
struct xen_sysctl_sched_id sched_id;
struct xen_sysctl_perfc_op perfc_op;
struct xen_sysctl_getdomaininfolist getdomaininfolist;
+ struct xen_sysctl_ioport_emulation ioport_emulation;
uint8_t pad[128];
} u;
};
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