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charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 204DDA0008 X-Stat-Signature: chbj7fmp6dne9rjnxonso6gey95jryz3 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1775546308-854649 X-HE-Meta: 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 6TE3EBkK 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Apr 07, 2026 at 08:48:22AM +0200, David Hildenbrand (Arm) wrote: > On 4/7/26 05:28, Anshuman Khandual wrote: > > > > > > On 27/02/26 11:57 AM, Anshuman Khandual wrote: > >> Replace raw READ_ONCE() dereferences of pgtable entries with corresponding > >> standard page table accessors pxdp_get() in perf_get_pgtable_size(). These > >> accessors default to READ_ONCE() on platforms that don't override them. So > >> there is no functional change on such platforms. > >> > >> However arm64 platform is being extended to support 128 bit page tables via > >> a new architecture feature i.e FEAT_D128 in which case READ_ONCE() will not > >> provide required single copy atomic access for 128 bit page table entries. > >> Although pxdp_get() accessors can later be overridden on arm64 platform to > >> extend required single copy atomicity support on 128 bit entries. > >> > >> Cc: Andrew Morton > >> Cc: David Hildenbrand > >> Cc: Peter Zijlstra > >> Cc: Ingo Molnar > >> Cc: Arnaldo Carvalho de Melo > >> Cc: Namhyung Kim > >> Cc: linux-perf-users@vger.kernel.org > >> Cc: linux-mm@kvack.org > >> Cc: linux-kernel@vger.kernel.org > >> Acked-by: Peter Zijlstra (Intel) > >> Signed-off-by: Anshuman Khandual > >> --- > >> This patch applies both on v7.0-rc1 and mm-unstable. > >> > >> Part of the D128 series but independent. Hence could be considered on its own. > >> > >> https://lore.kernel.org/all/20260224051153.3150613-5-anshuman.khandual@arm.com/ > >> > >> Collected Peter's tag from an off list conversation. > > > > Gentle ping. > > > > Still don't see this patch in latest next-20260406. Hence just > > wondering which tree and branch this patch is being picked up ? > > It's a trivial change and the last generic code change required for you > arm64 D128 change, right? > > I would assume this to go through the tip tree, but if Peter agrees we > could route this (mm) patch through the MM tree. Right, I thought this was part of a larger series and figured it would ride along with whatever other patches. If you still want me to pick this up, I can, just state clearly where this ought to go.