KVM: x86/mmu: Batch zap MMU pages when recycling oldest pages
Collect MMU pages for zapping in a loop when making MMU pages available, and skip over active roots when doing so as zapping an active root can never immediately free up a page. Batching the zapping avoids multiple remote TLB flushes and remedies the issue where the loop would bail early if an active root was encountered. Signed-off-by:Sean Christopherson <sean.j.christopherson@intel.com> Message-Id: <20200623193542.7554-3-sean.j.christopherson@intel.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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