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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A151EB64DD for ; Wed, 9 Aug 2023 10:49:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232259AbjHIKtR (ORCPT ); Wed, 9 Aug 2023 06:49:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232268AbjHIKtP (ORCPT ); Wed, 9 Aug 2023 06:49:15 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 804021BFF for ; Wed, 9 Aug 2023 03:49:14 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 17F18630D2 for ; Wed, 9 Aug 2023 10:49:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26A55C433C7; Wed, 9 Aug 2023 10:49:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691578153; bh=xbsLAV8IujelOUvYIZi8mZE4b77dSNYMERzBEQHt+JM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FXGLB5hP13wijHxxSu+EPUxMIsAcvZYE7UbpObbMBH0Hn+qRwdSeDpcnOtUvMu2lX uRw2YXFsCFG3qFMgrKSWAfVLZ/p0RdXifI9o5S+Mq+JhK/lSZMWhF+Dan78/hXgaDZ OYrGjlswS/XvnV/hR9UqFaReSB/XTB+mSKlQ17E4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mark Brown , Catalin Marinas Subject: [PATCH 6.4 124/165] arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems Date: Wed, 9 Aug 2023 12:40:55 +0200 Message-ID: <20230809103646.856394615@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103642.720851262@linuxfoundation.org> References: <20230809103642.720851262@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mark Brown commit 507ea5dd92d23fcf10e4d1a68a443c86a49753ed upstream. Currently we guard FPSIMD/SVE state conversions with a check for the system supporting SVE but SME only systems may need to sync streaming mode SVE state so add a check for SME support too. These functions are only used by the ptrace code. Fixes: e12310a0d30f ("arm64/sme: Implement ptrace support for streaming mode SVE registers") Signed-off-by: Mark Brown Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230803-arm64-fix-ptrace-ssve-no-sve-v1-2-49df214bfb3e@kernel.org Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman --- arch/arm64/kernel/fpsimd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -679,7 +679,7 @@ static void fpsimd_to_sve(struct task_st void *sst = task->thread.sve_state; struct user_fpsimd_state const *fst = &task->thread.uw.fpsimd_state; - if (!system_supports_sve()) + if (!system_supports_sve() && !system_supports_sme()) return; vq = sve_vq_from_vl(thread_get_cur_vl(&task->thread)); @@ -705,7 +705,7 @@ static void sve_to_fpsimd(struct task_st unsigned int i; __uint128_t const *p; - if (!system_supports_sve()) + if (!system_supports_sve() && !system_supports_sme()) return; vl = thread_get_cur_vl(&task->thread);