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 42CBCE77197 for ; Tue, 7 Jan 2025 21:08:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=F0W0PeuiyfBVSBBJFcPSxl1EJHKd/sfkxZP/U8feEIc=; b=0cpU+Nj8v70NuMRMGn0nTX82OV 5fqMGqMMFJ7oBk2oDj0SWB07WPdIrs8LLErwbTkvTCKNPRl2eAyvX+5qFMPWjWu/q2nr1OVExpD/K MFMNr4iXUlcmqGI6PM9K3tizNdGRioCXzrCARokGEAvV0FL/Q8nDCnlIExoiPyAYWupnCpjAcUG1l Gu2qAo8XPwwTd8q4Ggzw4RVCVZj/wM/zg18fOWOMygcbpEfYl9q9ixks59uxdaJXlZVqBDFFS2RFw V5Ok0dv95ySwRDX5KcDBXcTrRabCIp6ujfnnwYifADrofgy4yGF5iNqFiel+o89yZQl6htXYeHpmj Hlc5BWRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tVGo2-00000006IfI-1wIt; Tue, 07 Jan 2025 21:08:06 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tVGo0-00000006Ieq-0Atm for linux-um@lists.infradead.org; Tue, 07 Jan 2025 21:08:05 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 455255C42B7; Tue, 7 Jan 2025 21:07:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE716C4CED6; Tue, 7 Jan 2025 21:08:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736284082; bh=FsQ9rVojwWSNItZQx3DH9iKfZiN5ugoQFXCHmx/YGs4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ahYA9h4/5faYWYask1/nxKmAo5pgfhc6McbePC0zE/yH7diy68r2ySjtzFjIRM6+H PcpNp6dvXy4s4ZZRU6aAEEJKCl06Durs6E9t6YOP3Xr2xZfOYp0XcOFVh8TMUJPUJJ JV9CUye45CTcLdYlWtQKHgKDAabz0MvYwWhNQBf92o0m0i27SI+qa1GnKvWCUYyc54 R0vyiOdQQaaQkMOlU0fJhenifxe0RGCRF8XLo+GPfEAg0WhmaQadyxJp7aLYBuxXBR T+7wly1ZSgnRrG1wDYU75zQQsgf4BL4R/eF1x5J4m6XhtEDpoNs6L7oYOq1DR1ih5Q aXcASeqiamoMA== From: SeongJae Park To: Benjamin Berg Cc: SeongJae Park , linux-um@lists.infradead.org, Benjamin Berg Subject: Re: [PATCH] um: add back support for FXSAVE registers Date: Tue, 7 Jan 2025 13:07:58 -0800 Message-Id: <20250107210758.80762-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241204074827.1582917-1-benjamin@sipsolutions.net> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250107_130804_124450_0CE8ECDC X-CRM114-Status: GOOD ( 13.32 ) X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org Hello, On Wed, 4 Dec 2024 08:48:27 +0100 Benjamin Berg wrote: > From: Benjamin Berg > > It was reported that qemu may not enable the XSTATE CPU extension, which > is a requirement after commit 3f17fed21491 ("um: switch to regset API > and depend on XSTATE"). Add a fallback to use FXSAVE (FP registers on > x86_64 and XFP on i386) which is just a shorter version of the same > data. The only difference is that the XSTATE magic should not be set in > the signal frame. > > Note that this still drops support for the older i386 FP register layout > as supporting this would require more backward compatibility to build a > correct signal frame. > > Fixes: 3f17fed21491 ("um: switch to regset API and depend on XSTATE") > Reported-by: SeongJae Park > Closes: https://lore.kernel.org/r/20241203070218.240797-1-sj@kernel.org > Tested-by: SeongJae Park > Signed-off-by: Benjamin Berg Seems this patch is not yet merged into uml/next or uml/fixes. May I ask the timeline or blockers for this patch? Thanks, SJ [...]