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 B92D6C31E45 for ; Thu, 13 Jun 2019 16:18:30 +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 8F14420644 for ; Thu, 13 Jun 2019 16:18:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fGxEKygA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8F14420644 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=WtVWL8kaR5sCu52Vx33V3XyAr1neQV9OS7xaKz+v4Us=; b=fGxEKygAtVbHqzrAiH8s49PkG8 i4uxKAx7zYjDDKALdfXxlhe+prbMtpO7B0rmrtf66sI8xps99t8ocjzHjlr7tF1YwqqlYfItQAqOs QjadYUIKHw/2jdNAiG1KpR8A3ak3W3Fcgi/bxD+0yJsBRLCKvyGfK6VM0wOQyt7FhayWbvjZRlDvq PYpIxphYMn4rrDKhrc5pxohurZyxVzpEyjzqWoo6AJ2hvx6LIEtvJQmolZqya8l8WveZyqVwfH0Mb CHjgg247TGmLV9dNWzg2ZvprZbVAzd/CjoS4uhFU7nKVLeKLEkCbqjMjtUqaB7ijnvUjSQo0M+Yr0 EokXmAgQ==; 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 1hbSQm-0005EO-VI; Thu, 13 Jun 2019 16:18:29 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hbSPV-00048D-RI for linux-arm-kernel@lists.infradead.org; Thu, 13 Jun 2019 16:17:11 +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 918CBCFC; Thu, 13 Jun 2019 09:17:09 -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 3D1543F694; Thu, 13 Jun 2019 09:17:08 -0700 (PDT) From: Julien Grall To: linux-arm-kernel@lists.infradead.org Subject: [RFC PATCH v2 4/8] arm64/fpsimdmacros: Introduce a macro to update ZCR_EL1.LEN Date: Thu, 13 Jun 2019 17:16:52 +0100 Message-Id: <20190613161656.20765-5-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_091709_940350_C3576876 X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. 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 A follow-up patch will need to update ZCR_EL1.LEN. Add a macro that could be re-used in the current and new places to avoid code duplication. Signed-off-by: Julien Grall --- Changes in v2: - Fix typo in the commit message --- arch/arm64/include/asm/fpsimdmacros.h | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h index e2ab77dd9b4f..5e291d9c1ba0 100644 --- a/arch/arm64/include/asm/fpsimdmacros.h +++ b/arch/arm64/include/asm/fpsimdmacros.h @@ -198,6 +198,17 @@ .purgem _for__body .endm +/* Update ZCR_EL1.LEN with the new VQ */ +.macro sve_load_vq xvqminus1, xtmp, xtmp2 + mrs_s \xtmp, SYS_ZCR_EL1 + bic \xtmp2, \xtmp, ZCR_ELx_LEN_MASK + orr \xtmp2, \xtmp2, \xvqminus1 + cmp \xtmp2, \xtmp + b.eq 921f + msr_s SYS_ZCR_EL1, \xtmp2 //self-synchronising +921: +.endm + .macro sve_save nxbase, xpfpsr, nxtmp _for n, 0, 31, _sve_str_v \n, \nxbase, \n - 34 _for n, 0, 15, _sve_str_p \n, \nxbase, \n - 16 @@ -212,13 +223,7 @@ .endm .macro sve_load nxbase, xpfpsr, xvqminus1, nxtmp, xtmp2 - mrs_s x\nxtmp, SYS_ZCR_EL1 - bic \xtmp2, x\nxtmp, ZCR_ELx_LEN_MASK - orr \xtmp2, \xtmp2, \xvqminus1 - cmp \xtmp2, x\nxtmp - b.eq 921f - msr_s SYS_ZCR_EL1, \xtmp2 // self-synchronising -921: + sve_load_vq \xvqminus1, x\nxtmp, \xtmp2 _for n, 0, 31, _sve_ldr_v \n, \nxbase, \n - 34 _sve_ldr_p 0, \nxbase _sve_wrffr 0 -- 2.11.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel