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 A49E728E581; Mon, 21 Jul 2025 10:20:08 +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=1753093208; cv=none; b=gQqs4LfQojtMe6Vkr7CY1UxdgFW7VUvpB+uC9oFgaD1WT+2kN6G8ZMcjW2mMfClbKZVigVNjGdmRolTjQCgfycsxrEZnc66x03x8ooa8/x+2xsCh9DD64icYqAQck9QNy0UDoIEUdJXdeSHb2pm1CApieRHguyBXjBuE001MFFc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753093208; c=relaxed/simple; bh=hpSa9Hytttj/ZwtZ6FrPhzLZMQJROeFl8J2vEUiLn7U=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=TQRtUM6GBXeEV0Dm39JW/pEmhjrKE7Zs9ljoiWTU3pDJe463XGubfwQ69GLCYfP6nl9fVqwBIIzk2YJSVhBMWBl+6Tg8mJpPkjGAOf8oFiDN/fwyeE2iQhzPLR8VapzCANHYuMnHSfkQgIBwsWTXdAQbkROFdLAPaI0XZHonRdM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XnoFQNwh; 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="XnoFQNwh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 843CAC4CEED; Mon, 21 Jul 2025 10:20:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753093208; bh=hpSa9Hytttj/ZwtZ6FrPhzLZMQJROeFl8J2vEUiLn7U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XnoFQNwh2Fgz5KcR53GCy4ZmDpYmWnwB3lczuWDvMfRT6HQ7z8qJ660Qg8xhJYbsq TFu7sW35VxlvGQpTD/VVS3m22yMPv1fmzPJmrRXvzeIGhOHRU7IevGOkkjqmcjc7Uu tgE38WDqEaRklsURICOHIlJ6qVNbXzpNTugsHR+JOM1iH+yEK3Qr1vG1oFkmz2DRpQ S7OlxOOXesq1jBQXYLxHWJOXSChXVXx+9LmMB5sjnGE4EI5jm8YD/j7OUiK8TU4JWr Egpn4MEIE/+0NB6sdCTe/Ihm6X9nRanr2RFFBP86eKLX8jazGaVgSS2uK4E/EyNjxe 5SDzWwbcot9bA== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1udncs-00HZDF-QJ; Mon, 21 Jul 2025 11:20:06 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Will Deacon , Catalin Marinas Subject: [PATCH 7/7] KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable Date: Mon, 21 Jul 2025 11:19:55 +0100 Message-Id: <20250721101955.535159-8-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250721101955.535159-1-maz@kernel.org> References: <20250721101955.535159-1-maz@kernel.org> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, will@kernel.org, catalin.marinas@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Make ID_AA64PFR0_EL1.RAS writable so that we can restore a VM from a system without RAS to a RAS-equipped machine (or disable RAS in the guest). Signed-off-by: Marc Zyngier --- arch/arm64/kvm/sys_regs.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 549766d7abca8..64707c62f1cf9 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2946,7 +2946,6 @@ static const struct sys_reg_desc sys_reg_descs[] = { ~(ID_AA64PFR0_EL1_AMU | ID_AA64PFR0_EL1_MPAM | ID_AA64PFR0_EL1_SVE | - ID_AA64PFR0_EL1_RAS | ID_AA64PFR0_EL1_AdvSIMD | ID_AA64PFR0_EL1_FP)), ID_FILTERED(ID_AA64PFR1_EL1, id_aa64pfr1_el1, -- 2.39.2