From patchwork Wed Aug 25 16:17:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Elisei X-Patchwork-Id: 12458277 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2E8EC4338F for ; Wed, 25 Aug 2021 16:25:25 +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 94A206113A for ; Wed, 25 Aug 2021 16:25:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 94A206113A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com 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:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=pZgJFz+q9hIqMtjoODaus6KCFZ3IAIBjjsjAhj8RHZk=; b=gE4Hs2EUMVa+cd dKdswlbWjnQY9U4o4WA9Xu1o5X/RLuGE40Wf4ts3dqOTHNUlKbJrYd1gmIKRJ2aJyMie/2Wr2Czyu J4k0Foe676XY/nA27W3PBLROz7bVMpXal/jHRkfV9zdRYLoz9l/TC9kCQtQnqL+nR7X5OqiOOB0mh 7w8VTkRIlyvuAwIBk/iWab+IgqxDKTzJTzZkQ3LTw+fBWLl58Qw52vRtj40Z6qr/uqDzRrHD90fFR jHaRZEm1uxAF5B4soHk+0PL4hYHl5bvv4WlyXnapqciZiJ/PGxKRHXtKMNiD1ltrLhBO3zqTq1tSM hhU/iLhH2ul7SBZR8gIQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIvgg-007jak-RP; Wed, 25 Aug 2021 16:23:38 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIvan-007gUm-8p for linux-arm-kernel@lists.infradead.org; Wed, 25 Aug 2021 16:17:34 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0EFA81042; Wed, 25 Aug 2021 09:17:33 -0700 (PDT) Received: from monolith.cable.virginm.net (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B48FB3F66F; Wed, 25 Aug 2021 09:17:31 -0700 (PDT) From: Alexandru Elisei To: maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, will@kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v4 13/39] KVM: arm64: Add CONFIG_KVM_ARM_SPE Kconfig option Date: Wed, 25 Aug 2021 17:17:49 +0100 Message-Id: <20210825161815.266051-14-alexandru.elisei@arm.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210825161815.266051-1-alexandru.elisei@arm.com> References: <20210825161815.266051-1-alexandru.elisei@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210825_091733_395120_E3F370E6 X-CRM114-Status: GOOD ( 10.12 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a new configuration option that will be used for KVM SPE emulation. CONFIG_KVM_ARM_SPE depends on the SPE driver being builtin because: 1. The cpumask of physical CPUs that support SPE will be used by KVM to emulate SPE on heterogeneous systems. 2. KVM will rely on the SPE driver enabling the SPE interrupt at the GIC level. Signed-off-by: Alexandru Elisei --- arch/arm64/kvm/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index a4eba0908bfa..c6ad5a05efb3 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -46,6 +46,14 @@ if KVM source "virt/kvm/Kconfig" +config KVM_ARM_SPE + bool "Virtual Statistical Profiling Extension (SPE) support" + depends on ARM_SPE_PMU=y + default y + help + Adds support for Statistical Profiling Extension (SPE) in virtual + machines. + endif # KVM endif # VIRTUALIZATION