Message ID | 1509101470-7881-18-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="nmu0Ld2L"; 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 3yNglW10Rbz9rxj for <incoming-imx@patchwork.ozlabs.org>; Fri, 27 Oct 2017 21:55:51 +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=vo8i0HV+eYmc5Y8R0Mr/rmZ2NkwbSOV0bHeFT/4Cv4k=; b=nmu0Ld2LV//s6w QOIukw9BIVF8YqW3pdapkcUL++sOmCWrBvtDCtSEEXejcA2ZS5p5i5epHxIXPFNREOvzkWSAUgOk1 rGrZ7MBbB83zBLytLJFo1904esPljfnJPdgcx35xGMqy2JGvO75Ms5nfUKGTlgkxocVU2qyYTtEe6 0Wkb/u20pXf2hJr6TK227HCqsy/QHcvQEdwa2s/H/b1oGIdumQhFSEsey+RnW+sPDjSx/j2PtdG0o vjTNVbPlFan2NzsDwyYjA02p8fNLGrobjFQxu/3uZMLpBmO/EbLPKb4f8fYoqTtOHx0k9jcvOcikN DbTd8PbNm+/FvXw24b9Q==; 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 1e82Ij-0007iJ-U7; Fri, 27 Oct 2017 10:55:45 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1e82FD-0003vq-He for linux-arm-kernel@lists.infradead.org; Fri, 27 Oct 2017 10:52:25 +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 DB48A174E; Fri, 27 Oct 2017 03:51:52 -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 093063F24A; Fri, 27 Oct 2017 03:51:50 -0700 (PDT) From: Dave Martin <Dave.Martin@arm.com> To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 17/28] arm64/sve: Preserve SVE registers around kernel-mode NEON use Date: Fri, 27 Oct 2017 11:50:59 +0100 Message-Id: <1509101470-7881-18-git-send-email-Dave.Martin@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1509101470-7881-1-git-send-email-Dave.Martin@arm.com> References: <1509101470-7881-1-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-20171027_035208_324964_01DE64BB X-CRM114-Status: UNSURE ( 8.12 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -6.9 (------) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-6.9 points) 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)
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expand
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diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 703e9d7..d5108e8 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -884,8 +884,10 @@ 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);