KVM: X86: Change kvm_sync_page() to return true when remote flush is needed

Browse source

Currently kvm_sync_page() returns true when there is any present spte.
But the return value is ignored in the callers.

Changing kvm_sync_page() to return true when remote flush is needed and
changing mmu->sync_page() not to directly flush can combine and reduce
remote flush requests.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210918005636.3675-7-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Lai Jiangshan 2021-09-18 08:56:32 +08:00 • committed by Paolo Bonzini

parent 06152b2dec

commit c3e5e415bc

2 changed files with 23 additions and 19 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

21

arch/x86/kvm/mmu/mmu.c

View file

21

arch/x86/kvm/mmu/paging_tmpl.h

View file