xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] KVM: MMU: Never free a shadow page actively serving as a root

Browse Source 
We always need cr3 to point to something valid, so if we detect that we're
freeing a root page, simply push it back to the top of the active list.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Avi Kivity
2007-01-05 16:36:51 -08:00
committed by Linus Torvalds
parent 86a5ba025d
commit 3bb65a22a4
2 changed files with 19 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/kvm/kvm.h
View File

@@ -134,6 +134,7 @@ struct kvm_mmu_page {
*/
int global; /* Set if all ptes in this page are global */
int multimapped; /* More than one parent_pte? */
int root_count; /* Currently serving as active root */
union {
u64 *parent_pte; /* !multimapped */
struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */