Messages in this thread | | | Date | Thu, 3 Jun 2021 15:20:23 +0100 | From | Catalin Marinas <> | Subject | Re: [PATCH v13 3/8] arm64: mte: Sync tags for pages where PTE is untagged |
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On Mon, May 24, 2021 at 11:45:08AM +0100, Steven Price wrote: > A KVM guest could store tags in a page even if the VMM hasn't mapped > the page with PROT_MTE. So when restoring pages from swap we will > need to check to see if there are any saved tags even if !pte_tagged(). > > However don't check pages for which pte_access_permitted() returns false > as these will not have been swapped out. > > Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
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