From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 021F22FE07D; Sun, 1 Mar 2026 01:55:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772330116; cv=none; b=a2ejrXcooTSx5hJ1xKBeDsGZxhELSWQ+QrrAbRjmwhHsV4f9ko/MiiUU+9vMP5j8gD9QGDcNuMHowAjDHvQ/SpbgM5I2167XVPcvpaipv6L4ZxZOPb7NR1b5yGW3Axi/ktWOEHE/fvSrhd3H1XcsgVqD5hT167/wrBsjesqkB10= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772330116; c=relaxed/simple; bh=bhfHUyEcFd2BY07SAHZSvIUgr1GdW/hebPkTiFlnHvA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=q24VCCJ02LuxUAZ7xNuhOFk8tPrJkZBCm26ULd6W7glhTYz8JasDo+iGlqK2POsZWJaZwze7wH6aMZ9tv9n1v8ftgHRJGJVZWRrB3Uym/lDdATi7YjFUEaivZeqiXPUE7d0LqcbrxmEFLQZ/8eF6uFtEpv0H/3/CAm82JOh9aw8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Gw81YRVx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Gw81YRVx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 559FBC19421; Sun, 1 Mar 2026 01:55:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772330115; bh=bhfHUyEcFd2BY07SAHZSvIUgr1GdW/hebPkTiFlnHvA=; h=From:To:Cc:Subject:Date:From; b=Gw81YRVxC9ymZ0K0UMYXJTgXbUBq1CzkL/2ngV36vxcasb+cEymnvzVvq5xRhm+7h cDFatiQ8AZ1aVZjRuy+k5wDQ0zGQlZzx0wNhRqb35Yp8WWBEoqwNE0yc7hlaLHqv7i 7zae8yf4GIU5nx/zR7fHwvBKrNK9aHrvqV0jmkUq0+HfUwHG+LMu7WVbiPvPA1EtZy H5zfneCulB09cFt8U6aWmZdpVilaE9dtWxh4Np/+UsmGdyh6msGIffagVN4kSAbn9B 4IzPlc0dNgPbvyENvhjp4T6ViM1JuDqhyeePL92+xHEU9uKeNYr/BIt1A8ks7y7Emr WpKLPWYUezAiw== From: Sasha Levin To: stable@vger.kernel.org, yangtiezhu@loongson.cn Cc: Huacai Chen , loongarch@lists.linux.dev, linux-rt-devel@lists.linux.dev Subject: FAILED: Patch "LoongArch: Guard percpu handler under !CONFIG_PREEMPT_RT" failed to apply to 5.15-stable tree Date: Sat, 28 Feb 2026 20:55:13 -0500 Message-ID: <20260301015514.1722401-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-rt-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 70b0faae3590c628a98a627a10e5d211310169d4 Mon Sep 17 00:00:00 2001 From: Tiezhu Yang Date: Tue, 10 Feb 2026 19:31:13 +0800 Subject: [PATCH] LoongArch: Guard percpu handler under !CONFIG_PREEMPT_RT After commit 88fd2b70120d ("LoongArch: Fix sleeping in atomic context for PREEMPT_RT"), it should guard percpu handler under !CONFIG_PREEMPT_RT to avoid redundant operations. Cc: stable@vger.kernel.org Signed-off-by: Tiezhu Yang Signed-off-by: Huacai Chen --- arch/loongarch/kernel/unwind_prologue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/unwind_prologue.c b/arch/loongarch/kernel/unwind_prologue.c index 729e775bd40dd..ee1c29686ab05 100644 --- a/arch/loongarch/kernel/unwind_prologue.c +++ b/arch/loongarch/kernel/unwind_prologue.c @@ -65,7 +65,7 @@ static inline bool scan_handlers(unsigned long entry_offset) static inline bool fix_exception(unsigned long pc) { -#ifdef CONFIG_NUMA +#if defined(CONFIG_NUMA) && !defined(CONFIG_PREEMPT_RT) int cpu; for_each_possible_cpu(cpu) { -- 2.51.0