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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 C5CD5C04EB8 for ; Wed, 12 Dec 2018 10:29:57 +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 8DFBE2084E for ; Wed, 12 Dec 2018 10:29:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="iEF2ADMo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8DFBE2084E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=uXWEJnmL1zwjkS8Rtal+BQcOGfqqoDmzeuEBIiz9bUw=; b=iEF2ADMowUIw8XLh+pLQfabNE9 Ltn8d3QZ80gnqUgFJO4NxB74WGlewEyXLnv5ziyM81NVkbaWlwyeSWxlCIw28a0qOi0XHoUNQovIT Ho55o1683dIGa/W3wt0GXo3Cnw7AxbtWzEsEGvbWbur67/xlSO+CPSjh/6KnFhnMs+fMdt+CZDONI +kMZSJRVLV73QlphBkxxThPJWxBAsHCssehhAOMoHTZJh8xqXRhTPXozmY3PU80w6DOE0vE73GyPE 0QhmpASIU01fOD9v9Ov1o1K8DrloASj8AmWDO51+mgJZ9PReiayuO+xu/GctPIb8p2pSYnRRycbYa CS68J1fg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gX1m7-0005Gm-BN; Wed, 12 Dec 2018 10:29:55 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gX1m3-0005F9-Li for linux-arm-kernel@lists.infradead.org; Wed, 12 Dec 2018 10:29:53 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3612815AB; Wed, 12 Dec 2018 02:29:47 -0800 (PST) Received: from e119886-lin.cambridge.arm.com (unknown [10.37.6.11]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4C52A3F575; Wed, 12 Dec 2018 02:29:45 -0800 (PST) From: Andrew Murray To: Christoffer Dall , Marc Zyngier , Catalin Marinas , Will Deacon , Mark Rutland Subject: [PATCH v8 3/5] arm64: KVM: add accessors to track guest/host only counters Date: Wed, 12 Dec 2018 10:29:31 +0000 Message-Id: <1544610573-28446-4-git-send-email-andrew.murray@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1544610573-28446-1-git-send-email-andrew.murray@arm.com> References: <1544610573-28446-1-git-send-email-andrew.murray@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181212_022951_729880_5A9BD46B X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Suzuki K Poulose , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Julien Thierry MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org In order to effeciently enable/disable guest/host only perf counters at guest entry/exit we add bitfields to kvm_cpu_context for guest and host events as well as accessors for updating them. Signed-off-by: Andrew Murray --- arch/arm64/include/asm/kvm_host.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 1d3ca91..50f9d4c 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -205,6 +205,11 @@ struct kvm_cpu_context { struct kvm_vcpu *__hyp_running_vcpu; }; +struct kvm_pmu_events { + u32 events_host; + u32 events_guest; +}; + struct kvm_host_data { struct kvm_cpu_context host_ctxt; struct kvm_pmu_events pmu_events; @@ -472,11 +477,33 @@ void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu); void kvm_arch_vcpu_ctxsync_fp(struct kvm_vcpu *vcpu); void kvm_arch_vcpu_put_fp(struct kvm_vcpu *vcpu); +#define KVM_PMU_EVENTS_HOST 1 +#define KVM_PMU_EVENTS_GUEST 2 + #ifdef CONFIG_KVM /* Avoid conflicts with core headers if CONFIG_KVM=n */ static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu) { return kvm_arch_vcpu_run_map_fp(vcpu); } +static inline void kvm_set_pmu_events(u32 set, int flags) +{ + struct kvm_host_data *ctx = this_cpu_ptr(&kvm_host_data); + + if (flags & KVM_PMU_EVENTS_HOST) + ctx->pmu_events.events_host |= set; + if (flags & KVM_PMU_EVENTS_GUEST) + ctx->pmu_events.events_guest |= set; +} +static inline void kvm_clr_pmu_events(u32 clr) +{ + struct kvm_host_data *ctx = this_cpu_ptr(&kvm_host_data); + + ctx->pmu_events.events_host &= ~clr; + ctx->pmu_events.events_guest &= ~clr; +} +#else +static inline void kvm_set_pmu_events(u32 set, int flags) {} +static inline void kvm_clr_pmu_events(u32 clr) {} #endif static inline void kvm_arm_vhe_guest_enter(void) -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel