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 X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23345C31E45 for ; Thu, 13 Jun 2019 16:17:45 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ED6062147A for ; Thu, 13 Jun 2019 16:17:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lVXNOAyU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ED6062147A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=lEHPbHHv4ZaojZo7cKWaS3s9UjPRJxbWItZYIC6ZliA=; b=lVXNOAyUjaox2b/2/jljDpXT2Z 8je4UmXZWZgTCHtl7jz+XbEFd2DqsqU+1xyonfon0m6S+4h7XYu8XzxgprvPvRe/WdAEcuCfZQQKC IApQtUZAiEkyU0lFV6FzjRy1Plf6AGacncetuR8dFq+zl7meRixWDFGtrvcS3N9F45riTHTklxiyy NOPmvKlS20vDKdBSp9X7fCJLtx8lcGBB/PqiylUtsq+Ko5f9y42zQEV+K5LSu/Jj1Pv8Isiu55D3b X8PlDda4s/a3B3o19pyyzec4tZOm/6dwl9GI1FMcwCaQuEGQE25u0WrgOF4RKDmi2LiJuMb83oFqn Chai1VUg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hbSPx-0004PT-A9; Thu, 13 Jun 2019 16:17:37 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hbSPR-00043x-2U for linux-arm-kernel@lists.infradead.org; Thu, 13 Jun 2019 16:17:06 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C555DA78; Thu, 13 Jun 2019 09:17:04 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7097F3F694; Thu, 13 Jun 2019 09:17:03 -0700 (PDT) From: Julien Grall To: linux-arm-kernel@lists.infradead.org Subject: [RFC PATCH v2 1/8] arm64/fpsimd: Update documentation of do_sve_acc Date: Thu, 13 Jun 2019 17:16:49 +0100 Message-Id: <20190613161656.20765-2-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190613161656.20765-1-julien.grall@arm.com> References: <20190613161656.20765-1-julien.grall@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190613_091705_154492_0252B061 X-CRM114-Status: GOOD ( 11.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anton.Kirilov@arm.com, catalin.marinas@arm.com, will.deacon@arm.com, oleg@redhat.com, zhang.lei@jp.fujitsu.com, Julien Grall , alex.bennee@linaro.org, Dave.Martin@arm.com, Daniel.Kiss@arm.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org TIF_SVE is cleared by fpsimd_restore_current_state() not task_fpsimd_load(). Update the documentation of do_sve_acc to reflect this behavior. Signed-off-by: Julien Grall --- Changes in v2: - Fix typo in the commit message --- arch/arm64/kernel/fpsimd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index a38bf74bcca8..92f418e4f989 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -853,7 +853,7 @@ void fpsimd_release_task(struct task_struct *dead_task) * the SVE access trap will be disabled the next time this task * reaches ret_to_user. * - * TIF_SVE should be clear on entry: otherwise, task_fpsimd_load() + * TIF_SVE should be clear on entry: otherwise, fpsimd_restore_current_state() * would have disabled the SVE access trap for userspace during * ret_to_user, making an SVE access trap impossible in that case. */ -- 2.11.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel