KVM: x86/mmu: fast_page_fault support for the TDP MMU

Browse source

Make fast_page_fault interoperate with the TDP MMU by leveraging
walk_shadow_page_lockless_{begin,end} to acquire the RCU read lock and
introducing a new helper function kvm_tdp_mmu_fast_pf_get_last_sptep to
grab the lowest level sptep.

Suggested-by: Ben Gardon <bgardon@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20210713220957.3493520-5-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

David Matlack 2021-07-13 22:09:55 +00:00 • committed by Paolo Bonzini

parent c5c8c7c530

commit 6e8eb2060c

3 changed files with 80 additions and 13 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

50

arch/x86/kvm/mmu/mmu.c

View file

41

arch/x86/kvm/mmu/tdp_mmu.c

View file

2

arch/x86/kvm/mmu/tdp_mmu.h

View file