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 08978FC5936 for ; Thu, 26 Feb 2026 11:38:39 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From: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=PXNjXmlJuaXJ3/KWcjpycRdtonyfAccPdluhmX0qK3o=; b=sFlSX7kfMmLDdiVmgl3Mn0Jpf1 m1tRuAf0+ybMy/eASo0oEpNuSMd9zh3+1qG4qUXG4fEZmDCyeliMG58AmxHZn9U8FdTbXUkovjYgn SUASS+GwxrF3oCxVgG3zcjKiF+fh2kR7zjJ9E7WzZVdNLvzKH+uDqaIrN52UO89oyW0JCZXNZES9D mJmz/QzsIFVZUL1j6pQbZ/kE+dJ9fLBi4cQhIQp4fGO7tH6NqLJp4m10kWl8+KO5UHzQ9TpPR6Y9w p310WFNtmjTkRh36UCR1LBFlCJOwm2U4oHX6ggCfY37NtShQerM8Px/3B4JVxHXZm+Wllk3YyZB4u iCm/3IBQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vvZhR-000000063XI-3PMk; Thu, 26 Feb 2026 11:38:33 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vvZhQ-000000063XB-46hN for linux-arm-kernel@lists.infradead.org; Thu, 26 Feb 2026 11:38:33 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 0E7CE60054; Thu, 26 Feb 2026 11:38:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7972BC116C6; Thu, 26 Feb 2026 11:38:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772105911; bh=h0LXqcIKOrvxUgaaQZFhxxdHYHkQ0+ABx+hsGmP7jz0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=WBnlrRXsE6ZbQPudY3I0xHS7hZGfQ4B0Ogf5rz6MH/MzklysmhGRoocHOedAKhRSw Zb9o0R1J4owSQcmJPaAoUxoPXPrJ9L51DXP2Ki820buN+4xv/he7cSfs0Loegg0lWG k5HUmYffeRYsyfoOcKyrEhPtHYQjAI+3Pz4iWJ++CGqjOVzTpwDPB3sJVzyzo0q8QF D+lYVWYxk6L1tAfK0zIyHoYOf1uSnEPlo3BUmV3IPkVOxVmWvxrQYmG0m10yztN8el XdUAtCTmMoAW/8jMWLDx6DOFOdGgbRqD5IQpON49sXYnQF3p0xZkGn5qeIilqrZHpw s/ByNyn5Zycpg== Date: Thu, 26 Feb 2026 03:38:30 -0800 From: Oliver Upton To: Yeoreum Yun Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, miko.lenczewski@arm.com, kevin.brodsky@arm.com, broonie@kernel.org, ardb@kernel.org, suzuki.poulose@arm.com, lpieralisi@kernel.org, joey.gouly@arm.com, yuzenghui@huawei.com Subject: Re: [PATCH v14 7/8] KVM: arm64: use CASLT instruction for swapping guest descriptor Message-ID: References: <20260225182708.3225211-1-yeoreum.yun@arm.com> <20260225182708.3225211-8-yeoreum.yun@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260225182708.3225211-8-yeoreum.yun@arm.com> 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 Wed, Feb 25, 2026 at 06:27:07PM +0000, Yeoreum Yun wrote: > + asm volatile(__LSUI_PREAMBLE > + "1: caslt %[old], %[new], %[addr]\n" The other two flavors of this use relaxed ordering, why can't we do the same with LSUI? Thanks, Oliver