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| /openbmc/linux/arch/x86/kvm/mmu/ |
| H A D | mmu.c | diff 0378739401cfc2fd2a50a2a337a4f394e8493008 Wed Jun 22 14:27:10 CDT 2022 Paolo Bonzini <pbonzini@redhat.com> KVM: x86/mmu: Avoid unnecessary flush on eager page split
The TLB flush before installing the newly-populated lower level
page table is unnecessary if the lower-level page table maps
the huge page identically. KVM knows it is if it did not reuse
an existing shadow page table, tell drop_large_spte() to skip
the flush in that case.
Extracted from a patch by David Matlack.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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