diff options
| author | Keir Fraser <keir.fraser@citrix.com> | 2007-12-29 17:55:47 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2007-12-29 17:55:47 +0000 |
| commit | ca4bd2c1aea9818c9220d2a8c967fa1187448ad5 (patch) | |
| tree | dd0f5971bc2047a98938c2e7285870ac1950e24f | |
| parent | 86d2ef9f49f45376fa6038159969e5f7a18ed4c0 (diff) | |
| download | xen-ca4bd2c1aea9818c9220d2a8c967fa1187448ad5.tar.gz xen-ca4bd2c1aea9818c9220d2a8c967fa1187448ad5.tar.bz2 xen-ca4bd2c1aea9818c9220d2a8c967fa1187448ad5.zip | |
vmx: Fix the 2nd argument of cpuid_count() in vmx_cpuid_intercept()
For input 0x00000004, the value of "*ecx" has been overwritten by the
cpuid() in hvm_cpuid(), causing a bad value passed to cpuid_count().
Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
| -rw-r--r-- | xen/arch/x86/hvm/vmx/vmx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index 1e700d8d2e..b414078ab2 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -1235,6 +1235,7 @@ void vmx_cpuid_intercept( unsigned int *ecx, unsigned int *edx) { unsigned int input = *eax; + unsigned int count = *ecx; #ifdef VMXASSIST if ( input == 0x40000003 ) @@ -1293,7 +1294,7 @@ void vmx_cpuid_intercept( break; case 0x00000004: - cpuid_count(input, *ecx, eax, ebx, ecx, edx); + cpuid_count(input, count, eax, ebx, ecx, edx); *eax &= NUM_CORES_RESET_MASK; break; |