From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 8AD233382C7; Thu, 2 Jul 2026 16:03:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783008187; cv=none; b=t7FUJD8e1tI3BwpJBEiD8tc7u3LFCJpttt5Xuuub/twLC++Vb8sdMErR6r/zoKAbivZXTlJg3TeSR3AjVei0K9TV1PrUaKeToKWinbTZBPdXpLsqJ4shFFcIBfgfza2JgNV1E6BAclmdw+hMq+6ttr7aw82N/MUp9/EU+Fc3d+Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783008187; c=relaxed/simple; bh=I+50Lsc4CfIsNb/Gr6JuNAVEajtxVGGWW+qdCUg7RfE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RxR7FVf2YfxkFDbBN6YFlIgQl3RvJPM/HQ84WziEbdYaF/AzWompiGddsDpNC/Hyj/RkzsFtMjuJF3bXZgDGQA8BIugYLlfSstia2pkOrg0nh1TORyoaVtwvjEp7jcqsv0QgyJSQQ5c5mWFpTbje9I4pOGdTxt4kKRbbaREJVDE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dm3HDKMo; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dm3HDKMo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E9FA1F01559; Thu, 2 Jul 2026 16:03:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783008185; bh=whHpJ36OI1bAClZaUTHR3b4xJe/NWRnqvq/wOSxIZAM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dm3HDKMo5I7SCRzVbeCAvh80M0blEDPp8JzeP5dZ0xd2b8Y1dl8XJ0f63aHATD743 gUCWC0kJ6GJIvUUgQnHwQe0D68v1BodFLjK61wJKw+UZCvVCZn/a7YScOObLRr+juq iJlDNCBiRtpnoFKYpXniCx/bIWH1iOH3Tq4Ip679qKYYd7EqRqoqiNOTtGxDcSPJhP UKEmO56MCxKHxSwmhcYQWZg6H+z50ykNxCyzJhgzgw/6eL7WXsDZTsVn+mZUS79lsv 7mhhmnO5UXsPGel94rTpln8O0lwbodY4tlZx8l4xOw8lenUnAGfM6hY3dHAs04O4Ss gorA3VwZEDDIA== 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 4.98.2) (envelope-from ) id 1wfJsV-00000000ojd-1gRt; Thu, 02 Jul 2026 16:03:03 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: Steffen Eiden , Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH 26/28] KVM: arm64: Add FEAT_NV3 detection Date: Thu, 2 Jul 2026 17:02:46 +0100 Message-ID: <20260702160248.1377250-27-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260702160248.1377250-1-maz@kernel.org> References: <20260702160248.1377250-1-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, seiden@linux.ibm.com, joey.gouly@arm.com, suzuki.poulose@arm.com, oupton@kernel.org, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Now that everything is in place to engage the FEAT_NV3 fast-path, add the detection code to cpufeature.c. Signed-off-by: Marc Zyngier --- arch/arm64/kernel/cpufeature.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index c9c124b0ccc8e..6ae1c816e2010 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2627,6 +2627,13 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .matches = has_cpuid_feature, ARM64_CPUID_FIELDS(ID_AA64MMFR4_EL1, NV_frac, NV2P1) }, + { + .desc = "FEAT_NV3", + .capability = ARM64_HAS_NV3, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .matches = has_cpuid_feature, + ARM64_CPUID_FIELDS(ID_AA64MMFR4_EL1, NV_frac, NV3) + }, { .capability = ARM64_HAS_32BIT_EL0_DO_NOT_USE, .type = ARM64_CPUCAP_SYSTEM_FEATURE, -- 2.47.3