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=-17.0 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 A98EDC433C1 for ; Fri, 19 Mar 2021 16:20:03 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 4C36A6194A for ; Fri, 19 Mar 2021 16:20:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C36A6194A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:MIME-Version:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id: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=o3b++IGnYLJFQJO5dHzWBjQgo4anb1ZB+qZbjLey2FU=; b=F6IJ8n97p7eB0iO0vvDfBQ3F7Z YyyEbVkXrrrArfcMx2u9GxMQwEpMYmfWBd3dRQRu+dKGiW+tIb0pseRyUjN8Cv4EpAKaY3srEgyVU 7juGVeBEoFXIbvA1qg3XgSMml85aNA/gPHkjx3Gcb5t6ITDvsfD6W3CVdTka2gWCpk+DZN4upUX6f c5b7i5/ZqF2ZSuTTT2njPSgjThVnor0R7Yqar0+FANcKbL1npNDbeHpksJKwwmix9XV4kapUC3K84 y7/DzaYkS8nkF+GCpdJ5DNHlAuv04R3dLOCTe3EM2mGs8HqLpx8POYMQH8QLhNs2eE2mE7MjF4VQA VnZQn5uQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lNHpm-007gCa-4J; Fri, 19 Mar 2021 16:18:46 +0000 Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lNHpB-007g6C-ET for linux-arm-kernel@lists.infradead.org; Fri, 19 Mar 2021 16:18:11 +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 91FD7143B; Fri, 19 Mar 2021 09:18:07 -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 3AB403F718; Fri, 19 Mar 2021 09:18:06 -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 Cc: catalin.marinas@arm.com, will@kernel.org, Yoan Picchi Subject: [PATCH 6/7] KVM: arm64: Add stage2_unmap_vm counter for kvm_stat Date: Fri, 19 Mar 2021 16:17:10 +0000 Message-Id: <20210319161711.24972-7-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210319_161809_704781_5D923C25 X-CRM114-Status: UNSURE ( 9.59 ) X-CRM114-Notice: Please train this message. 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: , 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+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a counter for when the one want to unmap all the ram of a VM. This mostly happens when one restart a VM so we make sure to clear the ram and free the memory for other VMs. Signed-off-by: Yoan Picchi --- arch/arm64/include/asm/kvm_host.h | 1 + arch/arm64/kvm/guest.c | 1 + arch/arm64/kvm/mmu.c | 2 ++ 3 files changed, 4 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 76c81aa79..fa59b669c 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -549,6 +549,7 @@ struct kvm_vm_stat { ulong remote_tlb_flush; ulong flush_all_cache_lines; ulong memory_slot_unmaped; + ulong stage2_unmap_vm; ulong cached_page_invalidated; }; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index cd227136e..129c0d53d 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -43,6 +43,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VM_STAT("remote_tlb_flush", remote_tlb_flush), VM_STAT("flush_all_cache_lines", flush_all_cache_lines), VM_STAT("memory_slot_unmaped", memory_slot_unmaped), + VM_STAT("stage2_unmap_vm", stage2_unmap_vm), VM_STAT("cached_page_invalidated", cached_page_invalidated), VCPU_STAT("exits", exits), VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 1e8aeafc2..6d150a785 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -471,6 +471,8 @@ void stage2_unmap_vm(struct kvm *kvm) mmap_read_lock(current->mm); spin_lock(&kvm->mmu_lock); + kvm->stat.stage2_unmap_vm++; + slots = kvm_memslots(kvm); kvm_for_each_memslot(memslot, slots) stage2_unmap_memslot(kvm, memslot); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel