KVM: arm64: Don't mark "struct page" accessed when making SPTE young

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Don't mark pages/folios as accessed in the primary MMU when making a SPTE
young in KVM's secondary MMU, as doing so relies on
kvm_pfn_to_refcounted_page(), and generally speaking is unnecessary and
wasteful.  KVM participates in page aging via mmu_notifiers, so there's no
need to push "accessed" updates to the primary MMU.

Dropping use of kvm_set_pfn_accessed() also paves the way for removing
kvm_pfn_to_refcounted_page() and all its users.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010182427.1434605-84-seanjc@google.com>

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Sean Christopherson 2024-10-10 11:24:25 -07:00 • committed by Paolo Bonzini

parent 66bc627e7f

commit 2362506f7c

3 changed files with 4 additions and 13 deletions

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4

arch/arm64/include/asm/kvm_pgtable.h

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7

arch/arm64/kvm/hyp/pgtable.c

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6

arch/arm64/kvm/mmu.c

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