From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55E227E5 for ; Sun, 13 Nov 2022 22:31:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 645F0C433D6; Sun, 13 Nov 2022 22:31:02 +0000 (UTC) Date: Sun, 13 Nov 2022 22:30:58 +0000 From: Catalin Marinas To: Mark Brown Cc: Will Deacon , Marc Zyngier , Zhang Lei , James Morse , Alexandru Elisei , Andre Przywara , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v4 4/8] arm64/fpsimd: Stop using TIF_SVE to manage register saving in KVM Message-ID: References: <20221021230321.1159287-1-broonie@kernel.org> <20221021230321.1159287-5-broonie@kernel.org> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221021230321.1159287-5-broonie@kernel.org> On Sat, Oct 22, 2022 at 12:03:17AM +0100, Mark Brown wrote: > Now that we are explicitly telling the host FP code which register state > it needs to save we can remove the manipulation of TIF_SVE from the KVM > code, simplifying it and allowing us to optimise our handling of normal > tasks. Remove the manipulation of TIF_SVE from KVM and instead rely on > to_save to ensure we save the correct data for it. > > There should be no functional or performance impact from this change. > > Signed-off-by: Mark Brown Reviewed-by: Catalin Marinas