KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
authorWill Deacon <will@kernel.org>
Tue, 11 Aug 2020 10:27:24 +0000 (11:27 +0100)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 21 Aug 2020 22:03:47 +0000 (18:03 -0400)
commitfdfe7cbd58806522e799e2a50a15aee7f2cbb7b6
tree9b6f76e58e9945c50989d86f0037073fb8fa10df
parentcb957adb4ea422bd758568df5b2478ea3bb34f35
KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()

The 'flags' field of 'struct mmu_notifier_range' is used to indicate
whether invalidate_range_{start,end}() are permitted to block. In the
case of kvm_mmu_notifier_invalidate_range_start(), this field is not
forwarded on to the architecture-specific implementation of
kvm_unmap_hva_range() and therefore the backend cannot sensibly decide
whether or not to block.

Add an extra 'flags' parameter to kvm_unmap_hva_range() so that
architectures are aware as to whether or not they are permitted to block.

Cc: <stable@vger.kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Message-Id: <20200811102725.7121-2-will@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/arm64/include/asm/kvm_host.h
arch/arm64/kvm/mmu.c
arch/mips/include/asm/kvm_host.h
arch/mips/kvm/mmu.c
arch/powerpc/include/asm/kvm_host.h
arch/powerpc/kvm/book3s.c
arch/powerpc/kvm/e500_mmu_host.c
arch/x86/include/asm/kvm_host.h
arch/x86/kvm/mmu/mmu.c
virt/kvm/kvm_main.c