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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBF3EC433EF for ; Sun, 10 Oct 2021 12:00:21 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9E40260555 for ; Sun, 10 Oct 2021 12:00:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9E40260555 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=HGxuZAWErGd1UCN65suum3KFSekz9jSw2lJNHxTf4rs=; b=xFWXsO2OGnyf3v uZxOnQvNpctI4HWrZZOPo6XLRuEwiUTgRK/J9hsD/KqKmyIGy9ZCRKnP9F+jpuWJX4tQpmwbfPzoS jf5t07auGAFaIjd82M9lqqBTQe4ebu0RRFBvQjjm1ZBlIDZuv9QacOS/yMoD640VgfSWAhsIeMiD4 KRY0ejK9K0Dx33Xc4kQcvtAIlz79TbqJn2/tJyU6xGfJApkuAuhMXkJwIPb2brFKKYLpoL+vnUXtc 7CWmLoc2W5DCP3YY2CvdPlMflv1xA5lclD3wRq3uNUqsLD7B4ANzGPkmqI1jZaiJZcAF6LY1V1gLy 7YwHCGVArq9zkY5U4ITA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mZXSu-006jq6-1R; Sun, 10 Oct 2021 11:58:04 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mZXRu-006jYC-Um for linux-arm-kernel@lists.infradead.org; Sun, 10 Oct 2021 11:57:04 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B7CB461074; Sun, 10 Oct 2021 11:57:02 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mZXEZ-00FqFc-Me; Sun, 10 Oct 2021 12:43:15 +0100 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Mark Rutland , Daniel Lezcano , Thomas Gleixner , Peter Shier , Raghavendra Rao Ananta , Ricardo Koller , Oliver Upton , Will Deacon , Catalin Marinas , Linus Walleij , kernel-team@android.com Subject: [PATCH v3 14/17] arm64: Add a capability for FEAT_ECV Date: Sun, 10 Oct 2021 12:43:03 +0100 Message-Id: <20211010114306.2910453-15-maz@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211010114306.2910453-1-maz@kernel.org> References: <20211010114306.2910453-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, daniel.lezcano@linaro.org, tglx@linutronix.de, pshier@google.com, rananta@google.com, ricarkol@google.com, oupton@google.com, will@kernel.org, catalin.marinas@arm.com, linus.walleij@linaro.org, kernel-team@android.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-20211010_045703_030478_4FD5715F X-CRM114-Status: GOOD ( 14.91 ) 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 Add a new capability to detect the Enhanced Counter Virtualization feature (FEAT_ECV). Reviewed-by: Oliver Upton Signed-off-by: Marc Zyngier --- arch/arm64/kernel/cpufeature.c | 10 ++++++++++ arch/arm64/tools/cpucaps | 1 + 2 files changed, 11 insertions(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index f8a3067d10c6..26b11ce8fff6 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1926,6 +1926,16 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .sign = FTR_UNSIGNED, .min_field_value = 1, }, + { + .desc = "Enhanced Counter Virtualization", + .capability = ARM64_HAS_ECV, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .matches = has_cpuid_feature, + .sys_reg = SYS_ID_AA64MMFR0_EL1, + .field_pos = ID_AA64MMFR0_ECV_SHIFT, + .sign = FTR_UNSIGNED, + .min_field_value = 1, + }, #ifdef CONFIG_ARM64_PAN { .desc = "Privileged Access Never", diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 49305c2e6dfd..7a7c58acd8f0 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -18,6 +18,7 @@ HAS_CRC32 HAS_DCPODP HAS_DCPOP HAS_E0PD +HAS_ECV HAS_EPAN HAS_GENERIC_AUTH HAS_GENERIC_AUTH_ARCH -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel