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KVM: fix direction of dependency on MMU notifiers

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KVM_GENERIC_MEMORY_ATTRIBUTES requires the generic MMU notifier code, because
it uses kvm_mmu_invalidate_begin/end.  However, it would not work with a bespoke
implementation of MMU notifiers that does not use KVM_GENERIC_MMU_NOTIFIER,
because most likely it would not synchronize correctly on invalidation.  So
the right thing to do is to note the problematic configuration if the
architecture does not select itself KVM_GENERIC_MMU_NOTIFIER; not to
enable it blindly.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-01-06 02:24:00 -05:00
parent caadf876bb
commit 3a373e027d
1 changed files with 1 additions and 1 deletions
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virt/kvm/Kconfig
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@ -97,7 +97,7 @@ config KVM_GENERIC_MMU_NOTIFIER
bool
config KVM_GENERIC_MEMORY_ATTRIBUTES
select KVM_GENERIC_MMU_NOTIFIER
depends on KVM_GENERIC_MMU_NOTIFIER
bool
config KVM_PRIVATE_MEM