Message ID | 20230414142341.354556-16-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.22.2023.04.14.07.26.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Apr 2023 07:26:39 -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 15/17] events/uprobes: Break COW PTE before replacing page Date: Fri, 14 Apr 2023 22:23:39 +0800 Message-Id: <20230414142341.354556-16-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-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 444B34001A X-Rspam-User: X-Stat-Signature: x3pt6jktttpjignamfddujj66ixf67fz X-HE-Tag: 1681482400-624442 X-HE-Meta: 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 NzzbBwjf 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 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/kernel/events/uprobes.c b/kernel/events/uprobes.c index 59887c69d54c..db6bfaab928d 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -156,7 +156,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr, struct folio *old_folio = page_folio(old_page); struct folio *new_folio; struct mm_struct *mm = vma->vm_mm; - DEFINE_FOLIO_VMA_WALK(pvmw, old_folio, vma, addr, 0); + DEFINE_FOLIO_VMA_WALK(pvmw, old_folio, vma, addr, PVMW_BREAK_COW_PTE); int err; struct mmu_notifier_range range;
Break COW PTE if we want to replace the page which resides in COW-ed PTE. Signed-off-by: Chih-En Lin <shiyn.lin@gmail.com> --- kernel/events/uprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)