rmap_remove() would remove the sptep after locating the correct rmap_head.
While in several cases, the caller has already known the correct rmap_head.
This patch set tries to remove a spte from rmap_head directly.
The original discussion is posted at:
https://patchwork.kernel.org/patch/10615385/
This version dose some change based on Paolo's comments:
* rename the original pte_list_remove to __pte_list_remove
* remove the *if* check on mmu_spte_clear_track_bits in new pte_list_remove
* move mmu_spte_clear_track_bits before *if* branch in kvm_set_pte_rmapp
Wei Yang (3):
KVM: x86: rename pte_list_remove to __pte_list_remove
KVM: x86: a new pte_list_remove including mmu_spte_clear_track_bits
KVM: x86: extract mmu_spte_clear_track_bits in the loop of
kvm_set_pte_rmapp
arch/x86/kvm/mmu.c | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
--
2.15.1
