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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-07-03 12:02:42 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-02 07:40:16 +0400 |
| commit | dd180b3e90253cb4ca95d603a8c17413f8daec69 (patch) | |
| tree | 9c0cc39f4088a9b54a96ab6545739e423deb3d2e /arch/x86/kvm/mmu.c | |
| parent | 5689cc53fa9d09b5bf41b1b1a7c90bd6c112ab40 (diff) | |
| download | linux-dd180b3e90253cb4ca95d603a8c17413f8daec69.tar.xz | |
KVM: VMX: fix tlb flush with invalid root
Commit 341d9b535b6c simplify reload logic while entry guest mode, it
can avoid unnecessary sync-root if KVM_REQ_MMU_RELOAD and
KVM_REQ_MMU_SYNC both set.
But, it cause a issue that when we handle 'KVM_REQ_TLB_FLUSH', the
root is invalid, it is triggered during my test:
Kernel BUG at ffffffffa00212b8 [verbose debug info unavailable]
......
Fixed by directly return if the root is not ready.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index a20fd613acfe..70cdf6876b5f 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -92,8 +92,6 @@ module_param(oos_shadow, bool, 0644); #define PT_FIRST_AVAIL_BITS_SHIFT 9 #define PT64_SECOND_AVAIL_BITS_SHIFT 52 -#define VALID_PAGE(x) ((x) != INVALID_PAGE) - #define PT64_LEVEL_BITS 9 #define PT64_LEVEL_SHIFT(level) \ |