Messages in this thread | | | Date | Tue, 28 Nov 2023 18:05:41 +0100 | Subject | Re: [PATCH RFC v2 14/27] arm64: mte: Disable dynamic tag storage management if HW KASAN is enabled | From | David Hildenbrand <> |
| |
On 27.11.23 16:07, Alexandru Elisei wrote: > Hi, > > On Fri, Nov 24, 2023 at 08:54:12PM +0100, David Hildenbrand wrote: >> On 19.11.23 17:57, Alexandru Elisei wrote: >>> To be able to reserve the tag storage associated with a page requires that >>> the tag storage page can be migrated. >>> >>> When HW KASAN is enabled, the kernel allocates pages, which are now tagged, >>> in non-preemptible contexts, which can make reserving the associate tag >>> storage impossible. >> >> I assume that it's the only in-kernel user that actually requires tagged >> memory (besides for user space), correct? > > Indeed, this is the case. I'll expand the commit message to be more clear about > it. >
Great, thanks!
-- Cheers,
David / dhildenb
| |