From: Yong He <alexyonghe@xxxxxxxxxxx>
Expand max number of LRU cache of previous CR3s, so that
we could cache more entry when needed, such as KPTI is
enabled inside guest.
Signed-off-by: Yong He <alexyonghe@xxxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 4a68cb3eb..02528d4a2 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -430,11 +430,12 @@ struct kvm_mmu_root_info {
#define KVM_MMU_ROOT_INFO_INVALID \
((struct kvm_mmu_root_info) { .pgd = INVALID_PAGE, .hpa = INVALID_PAGE })
-#define KVM_MMU_NUM_PREV_ROOTS 3
+#define KVM_MMU_NUM_PREV_ROOTS 3
+#define KVM_MMU_NUM_PREV_ROOTS_MAX 11
#define KVM_MMU_ROOT_CURRENT BIT(0)
#define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i)
-#define KVM_MMU_ROOTS_ALL (BIT(1 + KVM_MMU_NUM_PREV_ROOTS) - 1)
+#define KVM_MMU_ROOTS_ALL (BIT(1 + KVM_MMU_NUM_PREV_ROOTS_MAX) - 1)
#define KVM_HAVE_MMU_RWLOCK
@@ -469,7 +470,7 @@ struct kvm_mmu {
*/
u32 pkru_mask;
- struct kvm_mmu_root_info prev_roots[KVM_MMU_NUM_PREV_ROOTS];
+ struct kvm_mmu_root_info prev_roots[KVM_MMU_NUM_PREV_ROOTS_MAX];
/*
* Bitmap; bit set = permission fault
--
2.43.5
