From: Avi Kivity <a...@redhat.com>
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 <a...@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>
diff --git a/qemu-kvm-x86.c b/qemu-kvm-x86.c
index 46257d6..016dcf1 100644
--- a/qemu-kvm-x86.c
+++ b/qemu-kvm-x86.c
@@ -1323,12 +1323,21 @@ 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++) {
+ index = kvm_msr_list->indices[n];
+ switch (index) {
+ case MSR_PAT:
+ data = 0x0007040600070406ULL;
+ default:
+ data = 0;
+ }
kvm_msr_entry_set(&msrs[n], kvm_msr_list->indices[n], 0);
}
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