Message ID | 1509465082-30427-20-git-send-email-Dave.Martin@arm.com |
---|---|
State | New |
Headers | show
Return-Path: <linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org> X-Original-To: incoming-imx@patchwork.ozlabs.org Delivered-To: patchwork-incoming-imx@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=65.50.211.133; helo=bombadil.infradead.org; envelope-from=linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="NMdT1JCG"; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=infradead.org header.i=@infradead.org header.b="OYBCDjuL"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yRGNC3xXZz9sPs for <incoming-imx@patchwork.ozlabs.org>; Wed, 1 Nov 2017 03:03:07 +1100 (AEDT) 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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=y7vAsa8gDIDs2v/NW+lcu9XGnsJZ6AMQ0SczbNRj/+A=; b=NMdT1JCGIbMX07 /A3csAWW9XlEIbYtpEr+3kvkeDTH2qNv5m3oDtJDdzBEUrLNx64zPoebCnOwVYsc9RQLN3d64P2xN v7ydGzBH6S0vKodzuQsRHe76cCPSGBTEllzFyyBIXGonrAVs8yBbCBhioWqoIN4lHni+K3pLyrjwS JHnK01WSO4J6CS42Zm6sfjDEtQDQ3b0neK59Xld4a1dsEeIVivWaf0AA2VD6AKHmoqAAwdZyZvKdN 6Q8jhhmC9qwhCBcFNIZkc85hYTB7ZNlqMW0AfCghWaXBMMsr9H+kO/1nfcigPgfRDrFxPtfVRb00l qeDTYV0dxARvS+bGhMlQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1e9Z0F-0005qR-LH; Tue, 31 Oct 2017 16:02:59 +0000 Received: from casper.infradead.org ([85.118.1.10]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1e9YuJ-0008Mk-Io for linux-arm-kernel@bombadil.infradead.org; Tue, 31 Oct 2017 15:56:51 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:Content-Type: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=oCQYFb1Lj/dCyHZ0px/V7W0i0w8z6OrG8z1p5tEtrus=; b=OYBCDjuL03KukYcTrFA2KvjrY0 rsAw6YjFkJkpFIXGpNrAklQYpXBh8MOZLhtoePUKi1RGi8YtnirI70+N0Wb5JXTqQX3jWR2P4ju44 nyvVhiMX2W3ope96TZwedEFcKE/6gCwda2wV922Dd2f83aaQpo6PelVyfcsOhOinetBbbPi7OXOCB 3ya0mu9/Ir7kx7eK8lf3UnKFZQeQGZpy8+ndag0NtrH7m8lZE4dxydRCuSsOubMfLd/3O7CqSsBVo XS2NBVlCus5lhhSf4SPlQvO2GhqCz+Y1nZTGO6PpkltqwM9dnjoqmJGai8MA+0NUhkScHnMb37eM/ 0QNIOo7w==; Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by casper.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1e9YqF-000877-2N for linux-arm-kernel@lists.infradead.org; Tue, 31 Oct 2017 15:52:41 +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 7C066174E; Tue, 31 Oct 2017 08:52:08 -0700 (PDT) Received: from e103592.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id AF6BC3F24A; Tue, 31 Oct 2017 08:52:06 -0700 (PDT) From: Dave Martin <Dave.Martin@arm.com> To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 19/30] arm64/sve: Preserve SVE registers around kernel-mode NEON use Date: Tue, 31 Oct 2017 15:51:11 +0000 Message-Id: <1509465082-30427-20-git-send-email-Dave.Martin@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> References: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171031_155239_328266_F8CDE4D1 X-CRM114-Status: UNSURE ( 9.03 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -6.9 (------) X-Spam-Report: SpamAssassin version 3.4.1 on casper.infradead.org summary: Content analysis details: (-6.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [217.140.101.70 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Cc: linux-arch@vger.kernel.org, Okamoto Takayuki <tokamoto@jp.fujitsu.com>, libc-alpha@sourceware.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Szabolcs Nagy <szabolcs.nagy@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, =?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org>, kvmarm@lists.cs.columbia.edu Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org |
Series |
ARM Scalable Vector Extension (SVE)
|
expand
|
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index c112972..ae10ddb 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -885,8 +885,10 @@ void kernel_neon_begin(void) __this_cpu_write(kernel_neon_busy, true); /* Save unsaved task fpsimd state, if any: */ - if (current->mm && !test_and_set_thread_flag(TIF_FOREIGN_FPSTATE)) - fpsimd_save_state(¤t->thread.fpsimd_state); + if (current->mm) { + task_fpsimd_save(); + set_thread_flag(TIF_FOREIGN_FPSTATE); + } /* Invalidate any task state remaining in the fpsimd regs: */ __this_cpu_write(fpsimd_last_state, NULL);