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| author | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2007-06-14 15:54:57 +0100 |
|---|---|---|
| committer | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2007-06-14 15:54:57 +0100 |
| commit | d25c0b84c6bc60c0573671c6923661f256b33307 (patch) | |
| tree | 47fcd9a590d1020b4cee9485ff5b859a10f2b04f /xen/include/asm-x86/msr.h | |
| parent | 9a1d2c1a459337f4b6e2b2d0d734f83ed5e8f967 (diff) | |
| download | xen-d25c0b84c6bc60c0573671c6923661f256b33307.tar.gz xen-d25c0b84c6bc60c0573671c6923661f256b33307.tar.bz2 xen-d25c0b84c6bc60c0573671c6923661f256b33307.zip | |
hvm svm: Fix for BSOD when "migrating" from Intel to AMD.
The Intel processor driver for Windows (XP and later at least) reads
an MSR that AMD doesn't have. This causes GP-fault in kernel mode,
which causes blue-screen-of-death on Windows. This prevents a
disk-image that was installed on Intel from starting on an AMD
processor.
This patch "fixes" the problem by allowing reads from the msr,
returning all zero's (which is a valid, if not particulary
meaningful, value for this register).
Signed-off-by: Mats Petersson <mats.petersson@amd.com>
Diffstat (limited to 'xen/include/asm-x86/msr.h')
| -rw-r--r-- | xen/include/asm-x86/msr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/xen/include/asm-x86/msr.h b/xen/include/asm-x86/msr.h index 80e9da6576..862e02c5d3 100644 --- a/xen/include/asm-x86/msr.h +++ b/xen/include/asm-x86/msr.h @@ -96,6 +96,7 @@ static inline void wrmsrl(unsigned int msr, __u64 val) #define MSR_IA32_TIME_STAMP_COUNTER 0x10 #define MSR_IA32_PLATFORM_ID 0x17 #define MSR_IA32_EBL_CR_POWERON 0x2a +#define MSR_IA32_EBC_FREQUENCY_ID 0x2c #define MSR_IA32_APICBASE 0x1b #define MSR_IA32_APICBASE_BSP (1<<8) |