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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8415EC433EF for ; Wed, 23 Feb 2022 15:20:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233597AbiBWPUb (ORCPT ); Wed, 23 Feb 2022 10:20:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232357AbiBWPUb (ORCPT ); Wed, 23 Feb 2022 10:20:31 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1D7839698 for ; Wed, 23 Feb 2022 07:20:03 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8C92D61787 for ; Wed, 23 Feb 2022 15:20:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11248C340E7; Wed, 23 Feb 2022 15:19:59 +0000 (UTC) Date: Wed, 23 Feb 2022 15:19:56 +0000 From: Catalin Marinas To: Mark Brown Cc: Will Deacon , Marc Zyngier , Shuah Khan , Shuah Khan , Alan Hayward , Luis Machado , Salil Akerkar , Basant Kumar Dwivedi , Szabolcs Nagy , James Morse , Alexandru Elisei , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH v11 21/40] arm64/sme: Implement ZA signal handling Message-ID: References: <20220207152109.197566-1-broonie@kernel.org> <20220207152109.197566-22-broonie@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220207152109.197566-22-broonie@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Mon, Feb 07, 2022 at 03:20:50PM +0000, Mark Brown wrote: > Implement support for ZA in signal handling in a very similar way to how > we implement support for SVE registers, using a signal context structure > with optional register state after it. Where present this register state > stores the ZA matrix as a series of horizontal vectors numbered from 0 to > VL/8 in the endinanness independent format used for vectors. > > As with SVE we do not allow changes in the vector length during signal > return but we do allow ZA to be enabled or disabled. > > Signed-off-by: Mark Brown This follows the SVE implementation closely. It looks fine to me: Reviewed-by: Catalin Marinas 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 Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5B0AC433EF for ; Wed, 23 Feb 2022 15:20:11 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 5FCE74C5CC; Wed, 23 Feb 2022 10:20:11 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2Cv3NlRtVxyQ; Wed, 23 Feb 2022 10:20:09 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 5D9224C5C8; Wed, 23 Feb 2022 10:20:09 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 6E37D4C5C6 for ; Wed, 23 Feb 2022 10:20:07 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1MVK3Hg3M0CL for ; Wed, 23 Feb 2022 10:20:06 -0500 (EST) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 17FC74C5C4 for ; Wed, 23 Feb 2022 10:20:06 -0500 (EST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 340FFB82036; Wed, 23 Feb 2022 15:20:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11248C340E7; Wed, 23 Feb 2022 15:19:59 +0000 (UTC) Date: Wed, 23 Feb 2022 15:19:56 +0000 From: Catalin Marinas To: Mark Brown Subject: Re: [PATCH v11 21/40] arm64/sme: Implement ZA signal handling Message-ID: References: <20220207152109.197566-1-broonie@kernel.org> <20220207152109.197566-22-broonie@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220207152109.197566-22-broonie@kernel.org> Cc: Basant Kumar Dwivedi , Will Deacon , Luis Machado , Szabolcs Nagy , Marc Zyngier , Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Alan Hayward , Shuah Khan , kvmarm@lists.cs.columbia.edu, Salil Akerkar X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On Mon, Feb 07, 2022 at 03:20:50PM +0000, Mark Brown wrote: > Implement support for ZA in signal handling in a very similar way to how > we implement support for SVE registers, using a signal context structure > with optional register state after it. Where present this register state > stores the ZA matrix as a series of horizontal vectors numbered from 0 to > VL/8 in the endinanness independent format used for vectors. > > As with SVE we do not allow changes in the vector length during signal > return but we do allow ZA to be enabled or disabled. > > Signed-off-by: Mark Brown This follows the SVE implementation closely. It looks fine to me: Reviewed-by: Catalin Marinas _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 7606AC433F5 for ; Wed, 23 Feb 2022 15:21:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+l2KpJWBLelOLWh3JZWnJhwPuHlQB8o7rD+SnwYHx14=; b=4Z1K3QXJlx99rT u05PSF3/6YsfyuGi8yrbXX/RJwhHGCoGKvCzmJ26tcS+IFSEsTGKamjp2MYImMkYzCIXDu1D9AIFV XrvOFAIDxFW3+drGkh2ZiqIKwiDDVh519c36OVY/E3ivp4HgAZrUf+2Fp9qHyVRXOrl6NYEYWhqaq cOr+c7ZoS39I/vM0GB81D4u2lH4TczEzs41iYvNr2NknWoswr4t/1JoCO9YcD4RldGeRW7IMuiMR4 3kgKdHYUWzF8nywTrcYbESa7PSMrtHZgfPS3I+phd9tMq2EA+fxd9cJGkGdeqmZttwrLMZ5dUklCs ewUlF0DnozkUhXkbR2kA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMtR3-00Ez2U-8f; Wed, 23 Feb 2022 15:20:09 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMtQz-00Ez1c-Jc for linux-arm-kernel@lists.infradead.org; Wed, 23 Feb 2022 15:20:06 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 340FFB82036; Wed, 23 Feb 2022 15:20:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11248C340E7; Wed, 23 Feb 2022 15:19:59 +0000 (UTC) Date: Wed, 23 Feb 2022 15:19:56 +0000 From: Catalin Marinas To: Mark Brown Cc: Will Deacon , Marc Zyngier , Shuah Khan , Shuah Khan , Alan Hayward , Luis Machado , Salil Akerkar , Basant Kumar Dwivedi , Szabolcs Nagy , James Morse , Alexandru Elisei , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH v11 21/40] arm64/sme: Implement ZA signal handling Message-ID: References: <20220207152109.197566-1-broonie@kernel.org> <20220207152109.197566-22-broonie@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220207152109.197566-22-broonie@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220223_072005_802743_171F9BAC X-CRM114-Status: GOOD ( 13.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Feb 07, 2022 at 03:20:50PM +0000, Mark Brown wrote: > Implement support for ZA in signal handling in a very similar way to how > we implement support for SVE registers, using a signal context structure > with optional register state after it. Where present this register state > stores the ZA matrix as a series of horizontal vectors numbered from 0 to > VL/8 in the endinanness independent format used for vectors. > > As with SVE we do not allow changes in the vector length during signal > return but we do allow ZA to be enabled or disabled. > > Signed-off-by: Mark Brown This follows the SVE implementation closely. It looks fine to me: Reviewed-by: Catalin Marinas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel