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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 E466BC433DB for ; Sat, 20 Mar 2021 13:28:56 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 2FF9A61970 for ; Sat, 20 Mar 2021 13:28:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2FF9A61970 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9CC4E4B267; Sat, 20 Mar 2021 09:28:55 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id buVHYOyprWmX; Sat, 20 Mar 2021 09:28:54 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 42AC84B272; Sat, 20 Mar 2021 09:28:54 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id F14A14B664 for ; Fri, 19 Mar 2021 12:18:00 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XZH-Z1GaxQmP for ; Fri, 19 Mar 2021 12:17:59 -0400 (EDT) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E1C184B606 for ; Fri, 19 Mar 2021 12:17:59 -0400 (EDT) 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 88794101E; Fri, 19 Mar 2021 09:17:59 -0700 (PDT) Received: from yoan-MS-7758.Home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 32F343F718; Fri, 19 Mar 2021 09:17:58 -0700 (PDT) From: Yoan Picchi To: maz@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH 1/7] KVM: arm64: Add two page mapping counters for kvm_stat Date: Fri, 19 Mar 2021 16:17:05 +0000 Message-Id: <20210319161711.24972-2-yoan.picchi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210319161711.24972-1-yoan.picchi@arm.com> References: <20210319161711.24972-1-yoan.picchi@arm.com> X-Mailman-Approved-At: Sat, 20 Mar 2021 09:28:53 -0400 Cc: catalin.marinas@arm.com, Yoan Picchi , will@kernel.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Add a counter for when a regular page is mapped, and another for when a huge page is mapped. Signed-off-by: Yoan Picchi --- arch/arm64/include/asm/kvm_host.h | 2 ++ arch/arm64/kvm/guest.c | 2 ++ arch/arm64/kvm/mmu.c | 7 +++++++ 3 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 3d10e6527..863603285 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -561,6 +561,8 @@ struct kvm_vcpu_stat { u64 wfi_exit_stat; u64 mmio_exit_user; u64 mmio_exit_kernel; + u64 regular_page_mapped; + u64 huge_page_mapped; u64 exits; }; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 9bbd30e62..14b15fb8f 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -38,6 +38,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("wfi_exit_stat", wfi_exit_stat), VCPU_STAT("mmio_exit_user", mmio_exit_user), VCPU_STAT("mmio_exit_kernel", mmio_exit_kernel), + VCPU_STAT("regular_page_mapped", regular_page_mapped), + VCPU_STAT("huge_page_mapped", huge_page_mapped), VCPU_STAT("exits", exits), VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 77cb2d28f..3996b28da 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -914,6 +914,13 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, mark_page_dirty(kvm, gfn); } + if (ret >= 0) { + if (vma_pagesize == PAGE_SIZE) { + vcpu->stat.regular_page_mapped++; + } else { + vcpu->stat.huge_page_mapped++; + } + } out_unlock: spin_unlock(&kvm->mmu_lock); kvm_set_pfn_accessed(pfn); -- 2.17.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm