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 439D029B8D8; Wed, 6 Aug 2025 16:56:30 +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=1754499391; cv=none; b=S9x57j/YzTIFvpf/aly5+qCPlWhW2Okj7LdUkPcGX7hmVUPN2nzivMGewlzwUu4pVqWV9Xkhv+0l26iJ93YJcNlrTrIWqOwdqPakrBBKBh6/MEoCH2Vof3Q16hPP3KgQ+K4ACdryou5JQc4urWmhIeiDjc7rLTWErAyJny01rSo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754499391; c=relaxed/simple; bh=JaFSWJU85Fpq1EgbXnM5BHKfbOjbYmhuKh/TLmUtnBE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Ka7zY+BnOacNDITTgjg5V6HUuyOEZD/UvkjF3MIppYhbT27tRSQKb5uqkoWovhRGIU7HFZgYcPtWYJT+4Idip8kWc2mdXtQ/JxDwloK/LM3+7t/H3pBcPzOCT0C8A33JCqXU2h6JZ0EGmgkA0ZY2PnB+QIugOiAQ2wZnBNxO6io= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gPt+sa2H; 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="gPt+sa2H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C291EC4CEFA; Wed, 6 Aug 2025 16:56:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754499390; bh=JaFSWJU85Fpq1EgbXnM5BHKfbOjbYmhuKh/TLmUtnBE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gPt+sa2HevfnRmwWNIN0+KH5gVnOEjbirwxNxZ+emt54Z0n7ezlnI93RQW6rFzeq4 cBpveHLAVbvrHkgqsvTFqOu/MrCe5QBWmaO7Ll8het7GUjjAf8p0THgSw7zJPwIxsi oprDAq884JCL+VmRS66CXMS82KVZg+D9YUpVqs4wVJgJZlz7LFkAFp3l12ifbhD86G q4ArwTgFLQ9LRKJ+SqVtlxdB1A1AYW8GXA8VkZg5kcrefK22WY3gbiOta12uqLDHdP dlHwCv2rUfWoZWa5ueN+li18DosrGaFHrz3Cyul+jxOLeOQdc5Dl/fly9wY+x3pJaP 5VG1hJ6Ft6Q5Q== 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 1ujhRE-004ZQV-P7; Wed, 06 Aug 2025 17:56:28 +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 v2 5/5] KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable Date: Wed, 6 Aug 2025 17:56:15 +0100 Message-Id: <20250806165615.1513164-6-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250806165615.1513164-1-maz@kernel.org> References: <20250806165615.1513164-1-maz@kernel.org> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev 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 66e5a733e9628..3a50ade091491 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2951,7 +2951,6 @@ 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