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 B320AC54E49 for ; Fri, 23 Feb 2024 11:35:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Subject:Cc:To:From:Message-ID:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ywWtQG+/W7oUW/W8Yx3Uvb7RrLVwouufEngg9dfMrb0=; b=zaLKHAtnw2ps2X WfOhfZSrIZQNfW8Vudrnmuq4l4JB6SRyROQPaWH6XP5KuattWsak2WweVBOJr7jR3eeJNlUQ0gEq/ jw0z65ZZRNJGHbm6pJNAbsFb9uXSOEBXYOvqWa3F2zKqofEBB5OzGC4bafV+Z++o7KAezjusVIl+7 2bqBtGh2xVwek5xz+Nu255l5VKS8l2DLRtpP4G8eawkpOajTGc43ehbm+71YpBUSJXnzfVVSAwJVq pw8ldT9BGPqTquxcDLFgNHy03bgK1zoMBNOs6PUCZ6o3+zItiGQJ/1MILNY6s6qtE+0RHdn9b2ikz xNeALYYeT8/0kazPSfpA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rdTpN-000000098tP-42gu; Fri, 23 Feb 2024 11:35:04 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rdToe-000000098Y4-3w0y for linux-arm-kernel@lists.infradead.org; Fri, 23 Feb 2024 11:34:16 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 15BF6CE0AFE; Fri, 23 Feb 2024 11:34:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49F9BC433C7; Fri, 23 Feb 2024 11:34:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708688046; bh=DiGctqgCKkLw/ZlxbVMfN/FK6a0lA5WiDsdNN455/9Q=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=DDaZpxGkIrQRkiIQ/px4Nc3Jmf+b4OB6qyp8wvQYO9aF8ME09FaXvGuHCna47cMjd 60wUuvAve82AGputYiyPZgqy+Ym7gFyc2fDgPXohDZOB7v0qNDjStq2j/WT0EWEvKm mcUQDdJ20y9hsq6MMm/fR2tkoftWrMhf0v4ARLtpj4wChfEpkgP486za+Ovz39W2vG jThe7EMtqS2FWcn1SJb/1WDg7N3eDzlh7EhqgQotjIufKHtBpR7emOnAJapszSx84v +cKv8mkIGhTK1LTWEpGTjiazyRuEN5YLr+cK/d/pdLThqlzgOh/TNRkCTnaR0sYRwP M/elKjGCgphaw== 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 1rdToa-0064G3-9S; Fri, 23 Feb 2024 11:34:04 +0000 Date: Fri, 23 Feb 2024 11:34:03 +0000 Message-ID: <86msrr2z4k.wl-maz@kernel.org> From: Marc Zyngier To: Mark Brown Cc: Catalin Marinas , Will Deacon , Oliver Upton , James Morse , Suzuki K Poulose , Jonathan Corbet , Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Dave Martin , kvmarm@lists.linux.dev, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH v4 02/14] arm64/fpsimd: Enable host kernel access to FPMR In-Reply-To: <20240122-arm64-2023-dpisa-v4-2-776e094861df@kernel.org> References: <20240122-arm64-2023-dpisa-v4-0-776e094861df@kernel.org> <20240122-arm64-2023-dpisa-v4-2-776e094861df@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/29.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: broonie@kernel.org, catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, james.morse@arm.com, suzuki.poulose@arm.com, corbet@lwn.net, shuah@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dave.martin@arm.com, kvmarm@lists.linux.dev, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org 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-20240223_033409_475478_50D4C1DE X-CRM114-Status: GOOD ( 19.26 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 22 Jan 2024 16:28:05 +0000, Mark Brown wrote: > > FEAT_FPMR provides a new generally accessible architectural register FPMR. > This is only accessible to EL0 and EL1 when HCRX_EL2.EnFPM is set to 1, > do this when the host is running. The guest part will be done along with > context switching the new register and exposing it via guest management. > > Signed-off-by: Mark Brown > --- > arch/arm64/include/asm/kvm_arm.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h > index 3c6f8ba1e479..7f45ce9170bb 100644 > --- a/arch/arm64/include/asm/kvm_arm.h > +++ b/arch/arm64/include/asm/kvm_arm.h > @@ -105,7 +105,7 @@ > #define HCRX_GUEST_FLAGS \ > (HCRX_EL2_SMPME | HCRX_EL2_TCR2En | \ > (cpus_have_final_cap(ARM64_HAS_MOPS) ? (HCRX_EL2_MSCEn | HCRX_EL2_MCE2) : 0)) > -#define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn | HCRX_EL2_TCR2En) > +#define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn | HCRX_EL2_TCR2En | HCRX_EL2_EnFPM) > > /* TCR_EL2 Registers bits */ > #define TCR_EL2_DS (1UL << 32) > Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel