Message ID | 20230414142341.354556-14-shiyn.lin@gmail.com (mailing list archive) |
---|---|
State | New |
Headers | show
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(2001-b011-20e0-1499-8303-7502-d3d7-e13b.dynamic-ip6.hinet.net. [2001:b011:20e0:1499:8303:7502:d3d7:e13b]) by smtp.googlemail.com with ESMTPSA id h7-20020a17090ac38700b0022335f1dae2sm2952386pjt.22.2023.04.14.07.26.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Apr 2023 07:26:20 -0700 (PDT) From: Chih-En Lin <shiyn.lin@gmail.com> To: Andrew Morton <akpm@linux-foundation.org>, Qi Zheng <zhengqi.arch@bytedance.com>, David Hildenbrand <david@redhat.com>, "Matthew Wilcox (Oracle)" <willy@infradead.org>, Christophe Leroy <christophe.leroy@csgroup.eu>, John Hubbard <jhubbard@nvidia.com>, Nadav Amit <namit@vmware.com>, Barry Song <baohua@kernel.org>, Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>, "H. Peter Anvin" <hpa@zytor.com>, Steven Rostedt <rostedt@goodmis.org>, Masami Hiramatsu <mhiramat@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Arnaldo Carvalho de Melo <acme@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>, Ian Rogers <irogers@google.com>, Adrian Hunter <adrian.hunter@intel.com>, Yu Zhao <yuzhao@google.com>, Steven Barrett <steven@liquorix.net>, Juergen Gross <jgross@suse.com>, Peter Xu <peterx@redhat.com>, Kefeng Wang <wangkefeng.wang@huawei.com>, Tong Tiangen <tongtiangen@huawei.com>, Christoph Hellwig <hch@infradead.org>, "Liam R. Howlett" <Liam.Howlett@Oracle.com>, Yang Shi <shy828301@gmail.com>, Vlastimil Babka <vbabka@suse.cz>, Alex Sierra <alex.sierra@amd.com>, Vincent Whitchurch <vincent.whitchurch@axis.com>, Anshuman Khandual <anshuman.khandual@arm.com>, Li kunyu <kunyu@nfschina.com>, Liu Shixin <liushixin2@huawei.com>, Hugh Dickins <hughd@google.com>, Minchan Kim <minchan@kernel.org>, Joey Gouly <joey.gouly@arm.com>, Chih-En Lin <shiyn.lin@gmail.com>, Michal Hocko <mhocko@suse.com>, Suren Baghdasaryan <surenb@google.com>, "Zach O'Keefe" <zokeefe@google.com>, Gautam Menghani <gautammenghani201@gmail.com>, Catalin Marinas <catalin.marinas@arm.com>, Mark Brown <broonie@kernel.org>, "Eric W. Biederman" <ebiederm@xmission.com>, Andrei Vagin <avagin@gmail.com>, Shakeel Butt <shakeelb@google.com>, Daniel Bristot de Oliveira <bristot@kernel.org>, "Jason A. Donenfeld" <Jason@zx2c4.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Alexey Gladkov <legion@kernel.org>, x86@kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Dinglan Peng <peng301@purdue.edu>, Pedro Fonseca <pfonseca@purdue.edu>, Jim Huang <jserv@ccns.ncku.edu.tw>, Huichun Feng <foxhoundsk.tw@gmail.com> Subject: [PATCH v5 13/17] mm/migrate_device: Support COW PTE Date: Fri, 14 Apr 2023 22:23:37 +0800 Message-Id: <20230414142341.354556-14-shiyn.lin@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230414142341.354556-1-shiyn.lin@gmail.com> References: <20230414142341.354556-1-shiyn.lin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 7CDC14001C X-Stat-Signature: 34gf53zdcqz5wu38ekpzfj3oggarixes X-HE-Tag: 1681482382-937214 X-HE-Meta: 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 RfzGtfco J03dG8sDAkkRhpazhdAGKllOPW603wLtfs2ZPxJLUqQnxLWGRw2n0pCbKxJswr4s7+l45/iMEERolUIY8/ycg3J9Y8keLR3UjTbwd4AugHVwGXiJYiyApRGiMnglVF/O/uQ+aqNKU6E3XkW4siczT8u0xj5mI+HRvulMtQvVB/NtnXjTCETheZYl2vqEkWa+ufjsTZqLd5Mt2NHN6/zm1z7yH8Rtj5odvkFVJncJGEyQ/xac/1SqzLGM6/81eq/mVrYK5Yoea9IE/uf4PCRYFU6WaHW2IF6Sv/kwunoKqs9Fe4paSQZDaw5YoAmjhChkPJuUH2GaRNa5sWlDxu5+/EXrH1fDS0SF//VC51E8Yh86x9gC6AS1RE4zGKa8/Qsx+XxBR2lZsxz2S1bXSFv8LpU0DypFrpCI+NzklnzwyezoLje58jAC/HZXFfL91jw8Stv3Hatjoq3o23O0sU8Bezy+6pMprj5uqVkvIuwey40GlCvBisjReSEkNWHcKbIFbx7kxGlbtErmqGosPRM38EvTH+mV682gZ8MFRDLNi0Q4vYCIvTMfCRWjmkco8kA4I7veibEsyX/Z2Jy2rE9cBt4Zo+g== 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: <linux-mm.kvack.org> |
Series |
Introduce Copy-On-Write to Page Table
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expand
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diff --git a/mm/migrate_device.c b/mm/migrate_device.c index d30c9de60b0d..340a8c39ee3b 100644 --- a/mm/migrate_device.c +++ b/mm/migrate_device.c @@ -106,6 +106,8 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp, } } + if (break_cow_pte_range(vma, start, end)) + return migrate_vma_collect_skip(start, end, walk); if (unlikely(pmd_bad(*pmdp))) return migrate_vma_collect_skip(start, end, walk);
Break COW PTE before collecting the pages in COW-ed PTE. Signed-off-by: Chih-En Lin <shiyn.lin@gmail.com> --- mm/migrate_device.c | 2 ++ 1 file changed, 2 insertions(+)