It fixes the slow-down of VM running with pci-passthrough, since some MTRR
range changed from MTRR_TYPE_WRBACK to MTRR_TYPE_UNCACHABLE.
Fixes: fa61213746a ("KVM: MTRR: simplify kvm_mtrr_get_guest_memory_type")
Bugzilla: (https://bugzilla.kernel.org/show_bug.cgi?id=107561)
Signed-off-by: Alexis Dambricourt <alexis.dambricourt@xxxxxxxxx>
---
arch/x86/kvm/mtrr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mtrr.c b/arch/x86/kvm/mtrr.c
index 9e8bf13..adc54e1 100644
--- a/arch/x86/kvm/mtrr.c
+++ b/arch/x86/kvm/mtrr.c
@@ -267,7 +267,7 @@ static int fixed_mtrr_addr_to_seg(u64 addr)
for (seg = 0; seg < seg_num; seg++) {
mtrr_seg = &fixed_seg_table[seg];
- if (mtrr_seg->start >= addr && addr < mtrr_seg->end)
+ if (mtrr_seg->start <= addr && addr < mtrr_seg->end)
return seg;
}
--
--
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