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Tue, 28 May 2024 04:12:29 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id vbSXN61ZVWYJCwAAD6G6ig (envelope-from ); Tue, 28 May 2024 04:12:29 +0000 Date: Tue, 28 May 2024 06:12:24 +0200 From: Oscar Salvador To: Christophe Leroy Cc: Andrew Morton , Jason Gunthorpe , Peter Xu , Michael Ellerman , Nicholas Piggin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [RFC PATCH v4 03/16] mm: Provide mm_struct and address to huge_ptep_get() Message-ID: References: <941ae68c7813cafc7aee3f34131f895fb7599636.1716815901.git.christophe.leroy@csgroup.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <941ae68c7813cafc7aee3f34131f895fb7599636.1716815901.git.christophe.leroy@csgroup.eu> X-Rspamd-Action: no action X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 7763A2000A X-Rspam-User: X-Stat-Signature: p1dr4w5z3upyyus6y9wuwbunctrt6r74 X-HE-Tag: 1716869552-22106 X-HE-Meta: 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 z4I1UYsa WbUOOAPAwynaa5kKk6IwF/PUM72hmY8N22fIrTUgTdt4Yod/v+vy0TehKhYRWR0onFhTTUSDf9o50p7gh81FqQH6CqAiA/dadBPo3upEuqmawZTa/Nnm1g8+XlM3loUu0kLRygOo6yc6WNeku6GpheMTn+Qm6UrRIrYxDrUCw7ZpNsMZX3jdqbF3Ap2aa4ke9Z9IZwqwBvSF9yZUiepXsXqStty9FW9YJ6bGW7rdvMZoM0ItJVsv3UE/6w4QnjTZonJdzqLnRPUr0DUN0wjTsB/ul98khc2QGDKecRsKtQZaLW5RQcOXk41vDRw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, May 27, 2024 at 03:30:01PM +0200, Christophe Leroy wrote: > On powerpc 8xx huge_ptep_get() will need to know whether the given > ptep is a PTE entry or a PMD entry. This cannot be known with the > PMD entry itself because there is no easy way to know it from the > content of the entry. > > So huge_ptep_get() will need to know either the size of the page > or get the pmd. > > In order to be consistent with huge_ptep_get_and_clear(), give > mm and address to huge_ptep_get(). > > Signed-off-by: Christophe Leroy Reviewed-by: Oscar Salvador -- Oscar Salvador SUSE Labs