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 4A18FC001DE for ; Fri, 28 Jul 2023 08:30:47 +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: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6pmI8tPWh2PQXrmkqi5bzKWRngKhsSDybU2f+jJxWLc=; b=0OYx77xyhmyFF0 7SN3QNdKaK8tQRB94aLKOTms+lkMQ2Jdz3nhWKD1SKu9A3NfPaxdrrtJ/Vxj4Lky0yyj1QC61mxvn vP8mjV1Lbqy8/JjNVWibEPY06rcUqPBMwogjLL+8Pb7sVt4qdi5g0xmpEkUlnHfFTz+iyIMTtHK1l OYqJ1aHHRCseyyNhtG3b9JR1Wl+9wHtMllASxrz8d2MyM51HKipddWsiXP0OfHPzpH1nekbFOi23K Me9z6ZbDWnahkPcdQ4qR22x3XM+4w7o2QNqPT7Wd0sM0/Ye0G0BDVHhaP8SWQx0wn8TYkSqec92Tt n09iAxT8wTa8wg1Y0taw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qPIri-002Oyx-0k; Fri, 28 Jul 2023 08:30:26 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qPIrN-002Oql-1h for linux-arm-kernel@lists.infradead.org; Fri, 28 Jul 2023 08:30:07 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CA9426205B; Fri, 28 Jul 2023 08:30:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E5C8C433C7; Fri, 28 Jul 2023 08:30:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690533003; bh=NW9ugZQp6jdrc8K97jsONmyhCFN9uJpDBq39l2TMQpM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LWTY2zJnI0HY1LS42DtVW84NsTlkTNXZU3lhSdC3q3CG5+MFWuwqemjqbIecs/GAV EHcQ02QM33yaKnv1dO8lS+0uezS/Kl6r3Uza85/8h+iqBHXqIsZCQ9FAcgF3qapx9A j/6y050Huv/uhU7qRpbdcfZ+mzX+0SRQ8HS268DoepM77jT9vbrHMslyUnoJBAZ9zn wFOo+R+Htir0IZIKh4DUQNZBh8jTkaUREZFuVxEOC52cZOlz2VfLdt4+4ecSfydNks F+OFWeye8Jy3vYXUOQFvzej2s3xPvDpWvBK6pSH3V9djzNtqil4elMql9gWtDK9ogO v+Qu/uhFaI2Ew== 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 1qPIrJ-0000EO-9S; Fri, 28 Jul 2023 09:30:01 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Eric Auger , Mark Brown , Mark Rutland , Will Deacon , Alexandru Elisei , Andre Przywara , Chase Conklin , Ganapatrao Kulkarni , Darren Hart , Miguel Luis , James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu Subject: [PATCH v2 09/26] arm64: Add feature detection for fine grained traps Date: Fri, 28 Jul 2023 09:29:35 +0100 Message-Id: <20230728082952.959212-10-maz@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230728082952.959212-1-maz@kernel.org> References: <20230728082952.959212-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, eric.auger@redhat.com, broonie@kernel.org, mark.rutland@arm.com, will@kernel.org, alexandru.elisei@arm.com, andre.przywara@arm.com, chase.conklin@arm.com, gankulkarni@os.amperecomputing.com, darren@os.amperecomputing.com, miguel.luis@oracle.com, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230728_013005_678369_FA898976 X-CRM114-Status: GOOD ( 13.64 ) 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 From: Mark Brown In order to allow us to have shared code for managing fine grained traps for KVM guests add it as a detected feature rather than relying on it being a dependency of other features. Acked-by: Catalin Marinas Reviewed-by: Eric Auger Signed-off-by: Mark Brown [maz: converted to ARM64_CPUID_FIELDS()] Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20230301-kvm-arm64-fgt-v4-1-1bf8d235ac1f@kernel.org --- arch/arm64/kernel/cpufeature.c | 7 +++++++ arch/arm64/tools/cpucaps | 1 + 2 files changed, 8 insertions(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index f9d456fe132d..668e2872a086 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_AA64ISAR1_EL1, LRCPC, IMP) }, + { + .desc = "Fine Grained Traps", + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .capability = ARM64_HAS_FGT, + .matches = has_cpuid_feature, + ARM64_CPUID_FIELDS(ID_AA64MMFR0_EL1, FGT, IMP) + }, #ifdef CONFIG_ARM64_SME { .desc = "Scalable Matrix Extension", diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index c80ed4f3cbce..c3f06fdef609 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -26,6 +26,7 @@ HAS_ECV HAS_ECV_CNTPOFF HAS_EPAN HAS_EVT +HAS_FGT HAS_GENERIC_AUTH HAS_GENERIC_AUTH_ARCH_QARMA3 HAS_GENERIC_AUTH_ARCH_QARMA5 -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel