The power-on value of MSR_IA32_CR_PAT is not 0 - that disables cacheing and
makes everything dog slow.
Fix to reset MSR_IA32_CR_PAT to the correct value.
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
qemu-kvm-x86.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/qemu-kvm-x86.c b/qemu-kvm-x86.c
index 4c32771..e02e896 100644
--- a/qemu-kvm-x86.c
+++ b/qemu-kvm-x86.c
@@ -1289,12 +1289,21 @@ static int kvm_reset_msrs(CPUState *env)
} msr_data;
int n;
struct kvm_msr_entry *msrs = msr_data.entries;
+ uint32_t index;
+ uint64_t data;
if (!kvm_msr_list)
return -1;
for (n = 0; n < kvm_msr_list->nmsrs; n++) {
- kvm_msr_entry_set(&msrs[n], kvm_msr_list->indices[n], 0);
+ index = kvm_msr_list->indices[n];
+ switch (index) {
+ case MSR_PAT:
+ data = 0x0007040600070406ULL;
+ default:
+ data = 0;
+ }
+ kvm_msr_entry_set(&msrs[n], index, data);
}
msr_data.info.nmsrs = n;
--
1.7.1
--
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