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Thu, 12 Mar 2026 15:02:42 +0000 (GMT) Date: Thu, 12 Mar 2026 16:02:40 +0100 From: Vasily Gorbik To: Andrew Morton Cc: "David Hildenbrand (Arm)" , Madhavan Srinivasan , Michael Ellerman , Pasha Tatashin , Alexander Gordeev , Heiko Carstens , linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org Subject: Re: [PATCH v2 1/4] mm/page_table_check: Pass mm_struct to pxx_user_accessible_page() Message-ID: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 1KsyIx1BDwTPWaT_bYuVWvLadqDOw4WH X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEyMDEyMSBTYWx0ZWRfX9FVH7vrUmovR J4ljyZrodPGRPdSk7n1B/Cu0G49IAvTOnb9rnFhx7k/ZMkrjauFEAfl9mgAdqYFQ5AIeON+I65L aBHB+xoH0lQifsBvM+fDapqU7iShTN1mwz6wfd4HDoQHyRNUuL3SE4S+xE7l9cxyu/+VssBqPe8 FtomLZUnwBdwc6mhzgyI+QBRIj0VvjIIMzoW/dhIAaRL2RNh8URukhOHG2aIpg3TrvdODgERw94 bu/MNsCRkWPsIKbo7rlefYFNmgpmKQz9p4ndZ+DRs20cVYl1l6HF2M4uoujYP0HyT7PBzGeqfT+ 8NU/fKpq9pAf5Ac3EfQsegHyszKU98eJp54aJoGeN2WHCSsZHn/zujIQWl+iQTzwRz4TdtyIETZ 5GC2PliLsfoRSNNNxjHHjgzxZZUP16hgpTMMKnK5UhAY3UAhROBg9q4VyPk1g6GDwAdF7Qhb7JE ektOqp8PyzdLfyWK8Og== X-Proofpoint-GUID: 1KsyIx1BDwTPWaT_bYuVWvLadqDOw4WH X-Authority-Analysis: v=2.4 cv=XNk9iAhE c=1 sm=1 tr=0 ts=69b2d598 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=Z4Rwk6OoAAAA:8 a=qw9MI_8u0g6XvTY13mQA:9 a=QEXdDO2ut3YA:10 a=HkZW87K1Qel5hWWM3VKY:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-12_01,2026-03-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 adultscore=0 bulkscore=0 phishscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603120121 On Fri, Mar 06, 2026 at 05:16:30PM +0100, Alexander Gordeev wrote: > From: Tobias Huschle > > Unlike other architectures, s390 does not have means to > distinguish kernel vs user page table entries - neither > an entry itself, nor the address could be used for that. > It is only the mm_struct that indicates whether an entry > in question is mapped to a user space. So pass mm_struct > to pxx_user_accessible_page() callbacks. > > [agordeev@linux.ibm.com: rephrased commit message, removed braces] > > Reviewed-by: Gerald Schaefer > Reviewed-by: Andrew Morton > Signed-off-by: Tobias Huschle > Signed-off-by: Alexander Gordeev > --- > arch/arm64/include/asm/pgtable.h | 6 +++--- > arch/powerpc/include/asm/book3s/32/pgtable.h | 2 +- > arch/powerpc/include/asm/book3s/64/pgtable.h | 10 +++++----- > arch/powerpc/include/asm/nohash/pgtable.h | 2 +- > arch/powerpc/include/asm/pgtable.h | 4 ++-- > arch/riscv/include/asm/pgtable.h | 6 +++--- > arch/x86/include/asm/pgtable.h | 6 +++--- > mm/page_table_check.c | 15 ++++++--------- > 8 files changed, 24 insertions(+), 27 deletions(-) Andrew, may I get your Reviewed-by or Ack-by for v2 so I can take it via the s390 tree as well? Thank you.