[PATCH] arm64: mte: Do not warn if the page is already tagged in copy_highpage()

Catalin Marinas catalin.marinas at arm.com
Wed Oct 22 03:00:12 PDT 2025


On Wed, Oct 22, 2025 at 02:19:19PM +0800, Kefeng Wang wrote:
> On 2025/10/22 3:00, Yang Shi wrote:
> > On Tue, Oct 21, 2025 at 11:14 AM Catalin Marinas
> > <catalin.marinas at arm.com> wrote:
> > > The arm64 copy_highpage() assumes that the destination page is newly
> > > allocated and not MTE-tagged (PG_mte_tagged unset) and warns
> > > accordingly. However, following commit 060913999d7a ("mm: migrate:
> > > support poisoned recover from migrate folio"), __folio_mc_copy() is
> 
> no "__" prefix

Yes, I got lost in underscores. Thanks.

-- 
Catalin



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