KVM: x86/mmu: Mark pages/folios dirty at the origin of make_spte()

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Move the marking of folios dirty from make_spte() out to its callers,
which have access to the _struct page_, not just the underlying pfn.
Once all architectures follow suit, this will allow removing KVM's ugly
hack where KVM elevates the refcount of VM_MIXEDMAP pfns that happen to
be struct page memory.

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: <20241010182427.1434605-42-seanjc@google.com>

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Sean Christopherson 2024-10-10 11:23:43 -07:00 • committed by Paolo Bonzini

parent 7103853952

commit 0cad68cab1

3 changed files with 33 additions and 13 deletions

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30

arch/x86/kvm/mmu/mmu.c

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5

arch/x86/kvm/mmu/paging_tmpl.h

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11

arch/x86/kvm/mmu/spte.c

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