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 EAF15E6F06D for ; Fri, 1 Nov 2024 16:17:46 +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-Type:MIME-Version: References:In-Reply-To:Subject:Cc:To:From:Message-ID:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UjDerGH5FHum9kPtGYCvMVG115zE8TYkVY/882Dg14U=; b=hY1miZ2wMvOxrhvEDqPxvkmyAd 2/PMbl4b8DMhJR+kmjwI7qRGqmqLvJhORGhX5qjXAkqOsz9icQZHwlGTEtgHShAMYfwFSGXEHekYS qxPyIKDHJejowcCtRccIyRM4jQtcD9EwCtfSgOT1GejhUCYB4SrgoT6PDBfBXq7s6yu4FHK43rC8s FCfx+o5fxzRcFDZfMmlK9y8P0dBUSvSUdKdXvtMaVW54AL/p/SjNUMm44OIYeFW53Zi9a54oAjMrM 1Ouy7IOh9mfuGBKnPNGZVOoDMAPGWEcRRR0fCphqkTQvolxc0YmI3jvopcKE1eJNjRKRoblT0FYUF /g0asUHQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t6uL8-00000007dXw-0Loc; Fri, 01 Nov 2024 16:17:34 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t6uG7-00000007cd6-42BQ for linux-arm-kernel@lists.infradead.org; Fri, 01 Nov 2024 16:12:25 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 9AA795C4590; Fri, 1 Nov 2024 16:11:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27455C4CECD; Fri, 1 Nov 2024 16:12:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730477542; bh=TVuhYAYnXLWMtXGZ18MTvfH6mL7QYNFn42tBocwQErM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=a00E/O/E9aSQJgH5engtiL0O1dYSYV0bRJAsx4iEjEVTMFIYZrFExz5kbWXk2zuYX a0huvqQknbX9AAQyR6+ddrb6+Hw3kNSnYHRdfXINYJizmTkrVbvuHCFfMqCbT01LXE iwHEwfUdlCJjypQGnHXGjLoUpZx0awSdaYRTCYikFQYguIUhJSZRuwfdMcE5PbVo2o VNAAyykejS26AdqCy0RDj0hthQBLoZi3AaUhD37ciNXEoCjCLU8HoGZHQJW99sxWmF H6buxtiyHqUBYAJG9UuOi/TzGrqPI/bY1LwGi4LuMu/fiBXZA1RAp4B5pokhw2slCd vEdlSALGNUj5w== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1t6uG2-008v73-EX; Fri, 01 Nov 2024 16:12:18 +0000 Date: Fri, 01 Nov 2024 16:12:18 +0000 Message-ID: <86msij0w7x.wl-maz@kernel.org> From: Marc Zyngier To: Catalin Marinas Cc: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Will Deacon , Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: Re: [PATCH] arm64: Expose ID_AA64ISAR1_EL1.XS to sanitised feature consumers In-Reply-To: References: <20241031083519.364313-1-maz@kernel.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.4 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: catalin.marinas@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, will@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241101_091224_061775_DC633174 X-CRM114-Status: GOOD ( 17.07 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 01 Nov 2024 15:35:41 +0000, Catalin Marinas wrote: > > On Thu, Oct 31, 2024 at 08:35:19AM +0000, Marc Zyngier wrote: > > Despite KVM now being able to deal with XS-tagged TLBIs, we still don't > > expose these feature bits to KVM. > > > > Plumb in the feature in ID_AA64ISAR1_EL1. > > > > Fixes: 0feec7769a63 ("KVM: arm64: nv: Add handling of NXS-flavoured TLBI operations") > > Signed-off-by: Marc Zyngier > > Acked-by: Catalin Marinas > > Happy for this to go in as a fix via the kvm tree but let me know if I > should pick it up instead. No need to merge this urgently, nothing goes badly wrong. Thanks, M. -- Without deviation from the norm, progress is not possible.