From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A0FF10BA431 for ; Fri, 27 Mar 2026 06:18:09 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4fhr6m22Pwz2yVt; Fri, 27 Mar 2026 17:18:08 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2607:7c80:54:3::133" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1774592288; cv=none; b=PS/LsmXb7teq3xxO0j5YLFxSK2kBCTSBrwFE6c/Ec7TZiHY/uiViIeQ6514xydzyE6PWsYK3uPN8iwiN1PEPlN99L4f47pQFMZaLLlPgjDbvbxHBNl0edJeWV6+R2r10GmCJdyRKbx94yDOAqV5vk9Jnk60yf/PzbZfZ8ldPz+St+W1Uf9h6yNIsTPJJVo4XQfF5y3iM8Yf3Nye+ftbjE7kbjKDdy027ZW8TjviaBRjeDTPa3wt5W27ldanjJbzsY1Un1V2kZilSkhxu4RUVnx0zvwfVaIAo8XccvBvOmk7ArnTNF11X0PF+aQk64YjYpfaHWVd4BIqiW9KytcV1vQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1774592288; c=relaxed/relaxed; bh=/2j39ho5HZfwE3eOGk3paFEvb/lh5G+wpe3o3TJUYA0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RJH481fdaBazydeNc0xjTNRT2VPesHAok1ajn5DvHLGw6Vlbe2NVHF+4oB+UDMXn5yqweLxgxDIpxvbjBuKbL/noHS8FxYtvnafc+ltkgcUpmvbqa5jnXow6Il38YiupZGXyxrltMHYQfZNw0iOvkVzPtFHJmHsrLWh4yCCRLFWGGG/hLb5AXiuC9FngPtGYP/BU7yCWQP6jVZMzaoHMO+otiNSC72KNhNALUwwQjXtCiY5JgGzw8j+rnY/7q04mJJlduHFF2UgenOID5R3+hqRySUcOlpPdoLCCVP/1QSQljpI3MzctvwkDZ1jCJGStDPHlPKFCjWQmI08ops9CHQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=lst.de; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=Dm8ySlYB; dkim-atps=neutral; spf=none (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=batv+7b1de7ca9b09bfe890a7+8251+infradead.org+hch@bombadil.srs.infradead.org; receiver=lists.ozlabs.org) smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=lst.de Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=Dm8ySlYB; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=bombadil.srs.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=batv+7b1de7ca9b09bfe890a7+8251+infradead.org+hch@bombadil.srs.infradead.org; receiver=lists.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4fhr6g3bLvz2xmX for ; Fri, 27 Mar 2026 17:18:00 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=/2j39ho5HZfwE3eOGk3paFEvb/lh5G+wpe3o3TJUYA0=; b=Dm8ySlYB19geB6N1wp4cse2BnE JN2T8m+Zw90dMyCB90leObMyg3f4eKCLoYf44HQSKs1iFsfQyNNlAyXTmC2YyC9cg+WVNAhvviD6y cyy4GwLB3/FH0loAebaI/l5+33lUAr833HyJEsycRuACwnjRw7sr6ZGJORwCbYpE9ukblH6jNRFYr PIcgis0ScZqfjsoRawazIw0xyrtdJF0UqnFjUlJCPOpkKy++zmpNABgi1etUgdX0e6yBRfyYJIMiN k0orD2TF6mVpcpXxUpVqKytJV7w1K10rawQKtxOmAa/9DVRbS95hfYSWAMKA4zwJHjX3yP5ZviO/F hWwaa7Hw==; Received: from 2a02-8389-2341-5b80-d601-7564-c2e0-491c.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:d601:7564:c2e0:491c] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1w60Vd-00000006kai-3ezG; Fri, 27 Mar 2026 06:17:30 +0000 From: Christoph Hellwig To: Andrew Morton Cc: Richard Henderson , Matt Turner , Magnus Lindholm , Russell King , Catalin Marinas , Will Deacon , Ard Biesheuvel , Huacai Chen , WANG Xuerui , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "David S. Miller" , Andreas Larsson , Richard Weinberger , Anton Ivanov , Johannes Berg , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Herbert Xu , Dan Williams , Chris Mason , David Sterba , Arnd Bergmann , Song Liu , Yu Kuai , Li Nan , "Theodore Ts'o" , "Jason A. Donenfeld" , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-crypto@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-arch@vger.kernel.org, linux-raid@vger.kernel.org Subject: [PATCH 01/28] xor: assert that xor_blocks is not call from interrupt context Date: Fri, 27 Mar 2026 07:16:33 +0100 Message-ID: <20260327061704.3707577-2-hch@lst.de> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260327061704.3707577-1-hch@lst.de> References: <20260327061704.3707577-1-hch@lst.de> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Most of the optimized xor_blocks versions require FPU/vector registers, which generally are not supported in interrupt context. Both callers already are in user context, so enforce this at the highest level. Signed-off-by: Christoph Hellwig --- crypto/xor.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/crypto/xor.c b/crypto/xor.c index f39621a57bb3..df530ddc9f06 100644 --- a/crypto/xor.c +++ b/crypto/xor.c @@ -28,6 +28,8 @@ xor_blocks(unsigned int src_count, unsigned int bytes, void *dest, void **srcs) { unsigned long *p1, *p2, *p3, *p4; + WARN_ON_ONCE(!in_task() || irqs_disabled() || softirq_count()); + p1 = (unsigned long *) srcs[0]; if (src_count == 1) { active_template->do_2(bytes, dest, p1); -- 2.47.3