git/linux-nf
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git synced 2026-04-17 22:24:18 -04:00
Code Issues Packages Projects Releases Wiki Activity

KVM: Allow lockless walk of SPTEs when handing aging mmu_notifier event

Browse Source 
It is possible to correctly do aging without taking the KVM MMU lock,
or while taking it for read; add a Kconfig to let architectures do so.
Architectures that select KVM_MMU_LOCKLESS_AGING are responsible for
correctness.

Suggested-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: James Houghton <jthoughton@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20250204004038.1680123-3-jthoughton@google.com
[sean: massage shortlog+changelog, fix Kconfig goof and shorten name]
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
James Houghton
2025-02-04 00:40:29 +00:00
committed by Sean Christopherson
parent 374ccd6360
commit aa34b81165
3 changed files with 20 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/kvm_host.h
View File

@@ -267,6 +267,7 @@ struct kvm_gfn_range {
union kvm_mmu_notifier_arg arg;
enum kvm_gfn_range_filter attr_filter;
bool may_block;
bool lockless;
};
bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range);
bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range);