2008-10-26 01:33:59 +02:00
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# HG changeset patch
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# User Keir Fraser <keir.fraser@citrix.com>
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# Date 1221148273 -3600
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# Node ID a5cc38391afb16af6bdae32c5a5f4f9a3a236987
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# Parent d8ce41b79ecc74c00797d73caa56dbdaf02bbd66
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ACPI: Grant access of MSR_IA32_THERM_CONTROL MSR to dom0
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The purpose is to support dom0 throttling control via MSR.
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Signed-off-by: Wei Gang <gang.wei@intel.com>
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Index: xen-3.3.1-testing/xen/arch/x86/traps.c
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===================================================================
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--- xen-3.3.1-testing.orig/xen/arch/x86/traps.c
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+++ xen-3.3.1-testing/xen/arch/x86/traps.c
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2008-12-05 15:30:41 +01:00
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@@ -2160,6 +2160,12 @@ static int emulate_privileged_op(struct
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2008-10-26 01:33:59 +02:00
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if ( wrmsr_safe(regs->ecx, eax, edx) != 0 )
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goto fail;
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break;
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+ case MSR_IA32_THERM_CONTROL:
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+ if ( boot_cpu_data.x86_vendor != X86_VENDOR_INTEL )
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+ goto fail;
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+ if ( wrmsr_safe(regs->ecx, eax, edx) != 0 )
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+ goto fail;
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+ break;
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default:
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if ( wrmsr_hypervisor_regs(regs->ecx, eax, edx) )
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break;
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2008-12-05 15:30:41 +01:00
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@@ -2236,6 +2242,12 @@ static int emulate_privileged_op(struct
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2008-10-26 01:33:59 +02:00
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MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL |
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MSR_IA32_MISC_ENABLE_XTPR_DISABLE;
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break;
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+ case MSR_IA32_THERM_CONTROL:
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+ if ( boot_cpu_data.x86_vendor != X86_VENDOR_INTEL )
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+ goto fail;
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+ if ( rdmsr_safe(regs->ecx, regs->eax, regs->edx) )
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+ goto fail;
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+ break;
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default:
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if ( rdmsr_hypervisor_regs(regs->ecx, &l, &h) )
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{
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