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 9C0AA1C8FD3 for ; Fri, 1 Nov 2024 16:12:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730477542; cv=none; b=DMUzPb2JDLXvuQ4tEB+uT/wj4Q7+73E0xuJD5hyP1/ofowsIYJ9gGtF+mQYwXnBaq6qN6RjhYoTg7b8hiBWcjLw+EPmc6BuEKegAhgsI+fn0n+F3+KG/X8z46K0VmILotS9nObgacF32HudgrbukRjGKp7Li3v4gOhM7lqpvhQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730477542; c=relaxed/simple; bh=TVuhYAYnXLWMtXGZ18MTvfH6mL7QYNFn42tBocwQErM=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=lS0bJbW/fv3C1fpJPRukyMYsA9rttuxBooSf06ztj/WFxZY3Jfc2SAF2xi2BArP/GLCTPmDcA1EFrDyOd9AHpT2kNPIly3P4K6LfsdLlY6bo0C2LJ8+JqqqYBxeCVUbcFH6Plw9kaEiVEbyxP4BKFnoVD8beeM0uvj8ksb3oGO8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a00E/O/E; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a00E/O/E" 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) Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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 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.