From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 11 Sep 2008 15:51:13 +0000 (+0100)
Subject: ACPI: Grant access of MSR_IA32_THERM_CONTROL MSR to dom0
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14111^2~1
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=ae79b4c5e5213f6ecaef4312a2b14eb193835ae6;p=xen.git

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@intel.com>
---

diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index f7fdb4d1f2..f40a1ed3f7 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -2154,6 +2154,12 @@ static int emulate_privileged_op(struct cpu_user_regs *regs)
             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;
@@ -2230,6 +2236,12 @@ static int emulate_privileged_op(struct cpu_user_regs *regs)
                          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) )
             {