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=-2.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED 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 84494C282C3 for ; Tue, 22 Jan 2019 16:03:51 +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 4ED4821726 for ; Tue, 22 Jan 2019 16:03:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="EUDpYZzp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4ED4821726 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-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=fpnVGTmyWVRk30VA8S4dL3c+yD3xlLOD49ZfGlzyH+8=; b=EUDpYZzpX7Lp8IFqTZvQCpX05 K9Wk2qWTdOHsP3Rhb+EgfGPQNMu8B1+IlV4qj2ol/WytMpRhwOt0cuwXN/h+njnuQJP7IQUu0Hmq1 my9UuAk2vNVoePeJWs9jmVQzWAWwM0xOYQntUaReo9Eb+C/XPd6jges1a2RP8wSm9tNpXaLyvT3L4 MtSpNS3Q/DGDxBYWnipOP6wJ1d9yzbB479Xt1+dtcdfcycSzB6omFpgCwx55LJyng4o3dOuJ9/9mt hiCP7ytab+F/QdPt9rGn1eQ+52jnvML5Nmxdms08rZFmUgMUngvVjNUZPLTTra+gd3/tf6pMNiArf LL6JkobTQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1glyWj-0000Rw-LQ; Tue, 22 Jan 2019 16:03:49 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1glyWc-0000RT-3B for linux-arm-kernel@lists.infradead.org; Tue, 22 Jan 2019 16:03:47 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 29003A78; Tue, 22 Jan 2019 08:03:39 -0800 (PST) Received: from [10.37.12.103] (unknown [10.37.12.103]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 465E73F589; Tue, 22 Jan 2019 08:03:37 -0800 (PST) Subject: Re: [RFC PATCH 1/8] arm64/fpsimd: Update documentation of do_sve_acc To: Mark Rutland References: <20190118164610.8123-1-julien.grall@arm.com> <20190118164610.8123-2-julien.grall@arm.com> <20190121121337.GA47506@lakrids.cambridge.arm.com> From: Julien Grall Message-ID: Date: Tue, 22 Jan 2019 16:03:35 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20190121121337.GA47506@lakrids.cambridge.arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190122_080342_141364_2D1119B0 X-CRM114-Status: GOOD ( 13.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tokamoto@jp.fujitsu.com, Anton.Kirilov@arm.com, catalin.marinas@arm.com, will.deacon@arm.com, oleg@redhat.com, alex.bennee@linaro.org, Dave.Martin@arm.com, linux-arm-kernel@lists.infradead.org, Daniel.Kiss@arm.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Mark, On 1/21/19 12:13 PM, Mark Rutland wrote: > On Fri, Jan 18, 2019 at 04:46:03PM +0000, Julien Grall wrote: >> TIF_SVE is cleared by fpsimd_restore_current_state() not >> task_fpsimd_load(). Update the documentatio of do_sve_acc to reflect >> this behavior. > > AFAICT (in v5.0-rc2), fpsimd_restore_current_state() clears > TIF_FOREIGN_FPSTATE, not TIF_SVE. > > I think you mean that fpsimd_restore_current_state() enabled/disables > the trap (via fpsimd_bind_task_to_cpu()), based on TIF_SVE. Is that > right? That's correct. I will reword the commit message and the documentation below. Cheers, -- Julien Grall _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel