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KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
commit fdfe7cb upstream. 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: <[email protected]> Cc: Marc Zyngier <[email protected]> Cc: Suzuki K Poulose <[email protected]> Cc: James Morse <[email protected]> Signed-off-by: Will Deacon <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> [will: Backport to 4.19; use 'blockable' instead of non-existent range flags] Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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