kvm: x86: Add multi-entry LRU cache for previous CR3s

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Adds support for storing multiple previous CR3/root_hpa pairs maintained
as an LRU cache, so that the lockless CR3 switch path can be used when
switching back to any of them.

Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Junaid Shahid 2018-06-27 14:59:20 -07:00 • committed by Paolo Bonzini

parent faff87588d

commit b94742c958

3 changed files with 92 additions and 41 deletions

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10

arch/x86/include/asm/kvm_host.h

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111

arch/x86/kvm/mmu.c

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12

arch/x86/kvm/vmx.c

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