Re: [PATCH RFC v2 14/27] arm64: mte: Disable dynamic tag storage management if HW KASAN is enabled
From: David Hildenbrand <hidden>
Date: 2023-11-24 19:54:18
Also in:
kvmarm, linux-arch, linux-arm-kernel, linux-fsdevel, linux-mm, lkml
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? -- Cheers, David / dhildenb