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 0F70023F41F; Sun, 17 Aug 2025 20:22:05 +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=1755462126; cv=none; b=tQMk0Y7VMnOyaaCbLwz4WNNdNqIFXA7EZS3Kq1NGIfuH238r5++rQXCebwJMZXj8QhAxSl3z1qV7NDQmKyGP0tAAQW1T5QGdMqg+i0/5Neilhu8zwb6Jvmmjt/GM61fxWQncSB3K/EytNV/mNQW3c022Ik9PpPbohiW5E8j+N2Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755462126; c=relaxed/simple; bh=/kr1h3ivDaybILMj58T9joQcQNXYw3TXcpEPHXi8CWI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=crU/Lwawnug9XLjdCUuErX4ak9zNyjeSLS/3LI4W3UVhdTCSXUIrgL0SW6t4zsYHwAUOKfkwEpGEFk1KFdG0yAYHiTZOOXGoSs+JEX6YSCvJpMJee00/TOmSszX9Yr2ScanydQSNKkaftDlOq9ZAIea8E4s2tB8+sUQjGdYGjHk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=M/p1LFvy; 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="M/p1LFvy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4A7BC116D0; Sun, 17 Aug 2025 20:22:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755462125; bh=/kr1h3ivDaybILMj58T9joQcQNXYw3TXcpEPHXi8CWI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M/p1LFvyG1jWQGFGy5M3aZHnSBRa/vq1bKsLxZDZItAsACkJ+cWaK066JObotivc7 so7haCYLxbnPyuFWhZ8IA3DhNbcXFXxkorzj62eXIF0G9F4Bo5FZUJPYpSSWTGTe0l DA1qm5DCUkm2F89pDehuWKtv/Sstnq2vGNYEDqX+hSSVnL1mRs48Zt3SiopSlTvJb/ ifmaQ6zdh1E8Ml3ddO5aZjoLX4HaOAostCLm2ORaA/qJ5gEzMnmi2bliQoFvsKSsSn VsevUxHY/t8UYuS9x3AK3B7ZNzIElwPCJZjWKXKWJGvAJ7216DVLOHE9ybem/Ve433 EngDuW9UR1o2Q== 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 1unjtD-008PX0-OS; Sun, 17 Aug 2025 21:22:03 +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 , Cornelia Huck Subject: [PATCH v3 4/6] KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable Date: Sun, 17 Aug 2025 21:21:56 +0100 Message-Id: <20250817202158.395078-5-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250817202158.395078-1-maz@kernel.org> References: <20250817202158.395078-1-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, cohuck@redhat.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 feb1a7a708e25..3306fef432cbb 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2941,7 +2941,6 @@ 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