From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Egger <Christoph.Egger@amd.com>
Subject: [PATCH] Allow Dom0 to read patchlevel MSR
Date: Tue, 16 Sep 2008 14:06:54 +0200
Message-ID: <200809161406.55187.Christoph.Egger@amd.com>
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Hi,

Allow Dom0 to read microcode patchlevel MSR.
Solaris needs this.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

=2D-=20
AMD Saxony, Dresden, Germany
Operating System Research Center

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diff -r 087008dfb005 xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c	Mon Sep 15 17:10:43 2008 +0100
+++ b/xen/arch/x86/traps.c	Tue Sep 16 13:57:31 2008 +0200
@@ -2242,6 +2242,12 @@ static int emulate_privileged_op(struct 
             if ( rdmsr_safe(regs->ecx, regs->eax, regs->edx) )
                 goto fail;
             break;
+        case MSR_AMD_PATCHLEVEL:
+            if ( boot_cpu_data.x86_vendor != X86_VENDOR_AMD )
+                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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