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In some cases, like with SEV-SNP, guest memory needs to be updated in a platform-specific manner before it can be safely freed back to the host. Wire up arch-defined hooks to the .free_folio kvm_gmem_aops callback to allow for special handling of this sort when freeing memory in response to FALLOC_FL_PUNCH_HOLE operations and when releasing the inode, and go ahead and define an arch-specific hook for x86 since it will be needed for handling memory used for SEV-SNP guests. Signed-off-by: Michael Roth <michael.roth@amd.com> Message-Id: <20231230172351.574091-6-michael.roth@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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