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Mon, 22 Sep 2025 10:14:59 +0800 From: Xie Yuanbin To: , , , , , , , , , , , , , , , , , , , CC: , , , , , , Subject: [RFC PATCH 2/2] ARM: memory-failure: not select RAS and MEMORY_ISOLATION Date: Mon, 22 Sep 2025 10:14:53 +0800 Message-ID: <20250922021453.3939-2-xieyuanbin1@huawei.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250922021453.3939-1-xieyuanbin1@huawei.com> References: <20250922021453.3939-1-xieyuanbin1@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.67.108.232] X-ClientProxiedBy: kwepems200002.china.huawei.com (7.221.188.68) To kwepemj100009.china.huawei.com (7.202.194.3) X-Rspamd-Queue-Id: CB32E80003 X-Stat-Signature: 7fb1x455w6gu8xhmd3mffjjhy14urafp X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1758507304-938214 X-HE-Meta: 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 Le1umC4q udanm+QGtygcxD0jJM7m74J1ZBhRv/pcE9JfDlZ7QhNH969rcniBk+KZfeWNfg2nodTcX1OfG/i8AFs38DrI0D2se/+ugL8o91LlG9GBVZkbBXoxH6L35znwHOEOAFA6gq3fBcriDjP4DgXy8Beu8TaBYigsjkV5veF158Zt4F/wGXGskrK4rbFxouv+Ag699Jf2mOT+d42osjBaLQl+yw6Pz2ddJIjMS07gNHAz1a6Xy6hfCkQ3ExiFahmn4GrkVYPWocyCWEFzO4WL7LeUW72GJ9pwzY721VUOUzlkpR7ABAPATL+8pdYXZS0rFn21aSp7cn9Pt+L84PdU7okhDvUL7GCsopKE3Ns0B241ZNcPGsIk= 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: For memory-failure on ARM, these features do not seem necessary. Signed-off-by: Xie Yuanbin --- mm/Kconfig | 4 ++-- mm/memory-failure.c | 2 ++ 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/Kconfig b/mm/Kconfig index 034a1662d8c1..22eefc4747d5 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -742,22 +742,22 @@ config DEFAULT_MMAP_MIN_ADDR This value can be changed after boot using the /proc/sys/vm/mmap_min_addr tunable. config ARCH_SUPPORTS_MEMORY_FAILURE bool config MEMORY_FAILURE depends on MMU depends on ARCH_SUPPORTS_MEMORY_FAILURE bool "Enable recovery from hardware memory errors" - select MEMORY_ISOLATION - select RAS + select MEMORY_ISOLATION if !ARM + select RAS if !ARM help Enables code to recover from some memory failures on systems with MCA recovery. This allows a system to continue running even when some of its memory has uncorrected errors. This requires special hardware support and typically ECC memory. config HWPOISON_INJECT tristate "HWPoison pages injector" depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS select PROC_PAGE_MONITOR diff --git a/mm/memory-failure.c b/mm/memory-failure.c index a24806bb8e82..83b77caf41a1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1271,21 +1271,23 @@ static void update_per_node_mf_stats(unsigned long pfn, ++mf_stats->total; } /* * "Dirty/Clean" indication is not 100% accurate due to the possibility of * setting PG_dirty outside page lock. See also comment above set_page_dirty(). */ static int action_result(unsigned long pfn, enum mf_action_page_type type, enum mf_result result) { +#ifdef CONFIG_RAS trace_memory_failure_event(pfn, type, result); +#endif if (type != MF_MSG_ALREADY_POISONED) { num_poisoned_pages_inc(pfn); update_per_node_mf_stats(pfn, result); } pr_err("%#lx: recovery action for %s: %s\n", pfn, action_page_types[type], action_name[result]); return (result == MF_RECOVERED || result == MF_DELAYED) ? 0 : -EBUSY; -- 2.48.1