[Xen-changelog] [xen-unstable] ACPI: Grant access of MSR_IA32_THERM_CONTROL MSR to dom0

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1221148273 -3600
# Node ID a5cc38391afb16af6bdae32c5a5f4f9a3a236987
# Parent  d8ce41b79ecc74c00797d73caa56dbdaf02bbd66
ACPI: Grant access of MSR_IA32_THERM_CONTROL MSR to dom0

The purpose is to support dom0 throttling control via MSR.

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
---
 xen/arch/x86/traps.c |   12 ++++++++++++
 1 files changed, 12 insertions(+)

diff -r d8ce41b79ecc -r a5cc38391afb xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c      Thu Sep 11 16:50:04 2008 +0100
+++ b/xen/arch/x86/traps.c      Thu Sep 11 16:51:13 2008 +0100
@@ -2154,6 +2154,12 @@ static int emulate_privileged_op(struct 
             if ( wrmsr_safe(regs->ecx, eax, edx) != 0 )
                 goto fail;
             break;
+        case MSR_IA32_THERM_CONTROL:
+            if ( boot_cpu_data.x86_vendor != X86_VENDOR_INTEL )
+                goto fail;
+            if ( wrmsr_safe(regs->ecx, eax, edx) != 0 )
+                goto fail;
+            break;
         default:
             if ( wrmsr_hypervisor_regs(regs->ecx, eax, edx) )
                 break;
@@ -2229,6 +2235,12 @@ static int emulate_privileged_op(struct 
             regs->eax |= MSR_IA32_MISC_ENABLE_BTS_UNAVAIL |
                          MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL |
                          MSR_IA32_MISC_ENABLE_XTPR_DISABLE;
+            break;
+        case MSR_IA32_THERM_CONTROL:
+            if ( boot_cpu_data.x86_vendor != X86_VENDOR_INTEL )
+                goto fail;
+            if ( rdmsr_safe(regs->ecx, regs->eax, regs->edx) )
+                goto fail;
             break;
         default:
             if ( rdmsr_hypervisor_regs(regs->ecx, &l, &h) )

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