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[(39.156.73.12)] by mailgw (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 715763335; Tue, 25 Jul 2023 14:15:11 +0800 From: Enze Li To: chenhuacai@kernel.org, kernel@xen0n.name, loongarch@lists.linux.dev, glider@google.com, elver@google.com, akpm@linux-foundation.org, kasan-dev@googlegroups.com, linux-mm@kvack.org Cc: zhangqing@loongson.cn, yangtiezhu@loongson.cn, dvyukov@google.com, Enze Li Subject: [PATCH 3/4 v2] KFENCE: Defer the assignment of the local variable addr Date: Tue, 25 Jul 2023 14:14:50 +0800 Message-Id: <20230725061451.1231480-4-lienze@kylinos.cn> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230725061451.1231480-1-lienze@kylinos.cn> References: <20230725061451.1231480-1-lienze@kylinos.cn> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 30AAF180004 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: a7z5n3pnn5b3zojdz5qa9t5d89conxyp X-HE-Tag: 1690265720-203854 X-HE-Meta: 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 fUCOiQ9U Xl0vDB1+FzTmnjUWGbh//vt42piiIlqB/bqj02f5ImWUlepUYBz9cNl2+cQ== 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: The LoongArch architecture is different from other architectures. It needs to update __kfence_pool during arch_kfence_init_pool(). This patch modifies the assignment location of the local variable addr in the kfence_init_pool function to support the case of updating __kfence_pool in arch_kfence_init_pool(). Signed-off-by: Enze Li Acked-by: Marco Elver --- mm/kfence/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/kfence/core.c b/mm/kfence/core.c index dad3c0eb70a0..e124ffff489f 100644 --- a/mm/kfence/core.c +++ b/mm/kfence/core.c @@ -566,13 +566,14 @@ static void rcu_guarded_free(struct rcu_head *h) */ static unsigned long kfence_init_pool(void) { - unsigned long addr = (unsigned long)__kfence_pool; + unsigned long addr; struct page *pages; int i; if (!arch_kfence_init_pool()) - return addr; + return (unsigned long)__kfence_pool; + addr = (unsigned long)__kfence_pool; pages = virt_to_page(__kfence_pool); /* -- 2.34.1