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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Petr Tesarik , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/sparse: fix BUILD_BUG_ON check for section map alignment Message-Id: <20260401093308.6fe32f4de4bc15ee6495fa68@linux-foundation.org> In-Reply-To: <1f8d0cd2-c990-4597-bf47-5a8217acc464@kernel.org> References: <20260331113023.2068075-1-songmuchun@bytedance.com> <32789381-f860-4b60-a1e1-4c97f6ed08b1@kernel.org> <7C90E910-D229-4F60-A62D-E893A89D58F2@linux.dev> <1742503A-F912-4AB6-AAF6-6CDB06829024@linux.dev> <9fddd112-e304-4ce1-b3f0-a4b133fcb281@kernel.org> <1f8d0cd2-c990-4597-bf47-5a8217acc464@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 95A761C0009 X-Stat-Signature: uew1ifpdifkjjk5i3ha8trkwywm9hhfo X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1775061190-990699 X-HE-Meta: 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 wwWKXYtU tR2tGCEkzPYSp6a07NYWBF34vAd54xzB1yAoDtcK9puV8a++6pE8E1hVvnxIBAZS8uLOoJTRNtfEGUSs4Wc/gHCgjqHTXDMZmgEL+dg7r2hYSO5rlRuQIezjOEY+/6JmmqyxiA1VqLeMpabJWIwrq0ujBNP2+1pxjSUfCRArHzGuJZmwcEfn0QaPy+kQJLT18lghFM3ly7sZoB17mY1kHudE0vfGnW2rc+BiXMq9Lx4eugiH4H9vEDxmkZlhxS/crUR2RHgKpVuz/5JOC09xS7yLJKYYn0g6666VlYjLmMQnLqe7i8LD2bbQV8jEvSRKJDrzOuzrBMTqTSurrDEEMs7pJug== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 1 Apr 2026 09:26:49 +0200 "David Hildenbrand (Arm)" wrote: > > My original motivation was simply that when I read this part of the code, > > the comment felt a bit off to me, so I just fixed it casually. But if it > > ends up creating the impression that "we might be supporting something > > we don't," as you said, then I'm fine with dropping this patch. > > Can you rework your patch to only simplify the comment, and to clarify > that we always expect a single section to cover full pages? And to fix the sh4-allnoconfig build breakage ;) https://lkml.kernel.org/r/202604011400.OFLcOOmf-lkp@intel.com I'll disappear this patch.