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=-14.2 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 4ECF8C4338F for ; Tue, 24 Aug 2021 17:59:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A461610F8 for ; Tue, 24 Aug 2021 17:59:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240195AbhHXSA1 (ORCPT ); Tue, 24 Aug 2021 14:00:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240945AbhHXR77 (ORCPT ); Tue, 24 Aug 2021 13:59:59 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DCFA9C0E56A0; Tue, 24 Aug 2021 10:40:43 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id m4so1636039pll.0; Tue, 24 Aug 2021 10:40:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HEn0Id8jewcjHef7bTOMTnX15Pf7THVZ4hwtDc/gbQc=; b=SGOQMhG+lLXSOYynPJIMSzV0IjW2y87va+qmXM9QFlnstFrpuhOvzO4yfkQVlIjtxo ROxBrgAvviJ9titRCCQepQYhAIILiLuivsV6JJ6gHi0iq2ReR1aF69jZKgbGroFdR/Em f3rODccVDhP9VpSTFQlwXLG8q7xSI9kcZjMqsTteQFilAUcqeiwJJ1VeBNbuSd3wrxS0 vEda56xJaxSr0E695gxcOxf4s2ujs1SrZ6kUYpDREbGAUbN6lGYs+MH4ceRYSSa8En+p d2DxuEV2wp0noxE/kdXpxqOeksTMdNRe+QA8NdFh/hgxwUkn2rBg6EKN9MFNY5QIUrZn Yd9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HEn0Id8jewcjHef7bTOMTnX15Pf7THVZ4hwtDc/gbQc=; b=QS774jbXPcQ/cjht/aEURpijFiNDxnUlP7FC4f/82OzDaNCiOpP/IZwzHqcokNQiPW kQs//X6HW4Ek4e1kPIVW3BeE8Ua4mBx36rgVYEsLcr+QKDUuQOYHlGiuaTauHcp9ZPwS qe2oX9lgZi6MLyaBDwpXzw0qVY/3u1LOlQ9i9NbfYkAdc7TpSV/4NkB6IrevFKkkYWQD gwms+yiMSNGrrZd8J74GP2+t8exEM0TOaz7f+KJbsF3nXXblmDBTcUkUR3m957KhfEod vwl/XCO65hXJzJH373KZtGHc2Ad8Kd6aYqiNDlC6JTZfBFPYaz3AL9qlrEqZrAxKxl3i dlRQ== X-Gm-Message-State: AOAM5327pz7aybfmOzWlEpyCGTXqKUIjkQeu6jktUVJVfcySobSHv1v+ hAXscdOVoCE8ONnTiSO7dVciv/YCzr0= X-Google-Smtp-Source: ABdhPJzZcR3aOHLJ8VoDN+6iQuLKvkzFrcBdBQ8/mNnig7f1E8sPxr07p0IkV+lEEpRyPm5pKI76sw== X-Received: by 2002:a17:90a:f289:: with SMTP id fs9mr5572327pjb.43.1629826843246; Tue, 24 Aug 2021 10:40:43 -0700 (PDT) Received: from localhost ([47.251.4.198]) by smtp.gmail.com with ESMTPSA id n22sm19861089pff.57.2021.08.24.10.40.42 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 24 Aug 2021 10:40:42 -0700 (PDT) From: Lai Jiangshan To: linux-kernel@vger.kernel.org Cc: Paolo Bonzini , Lai Jiangshan , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , kvm@vger.kernel.org Subject: [PATCH 3/7] KVM: X86: Zap the invalid list after remote tlb flushing Date: Tue, 24 Aug 2021 15:55:19 +0800 Message-Id: <20210824075524.3354-4-jiangshanlai@gmail.com> X-Mailer: git-send-email 2.19.1.6.gb485710b In-Reply-To: <20210824075524.3354-1-jiangshanlai@gmail.com> References: <20210824075524.3354-1-jiangshanlai@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lai Jiangshan In mmu_sync_children(), it can zap the invalid list after remote tlb flushing. Emptifying the invalid list ASAP might help reduce a remote tlb flushing in some cases. Signed-off-by: Lai Jiangshan --- arch/x86/kvm/mmu/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 987953a901d2..a165eb8713bc 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -2050,7 +2050,7 @@ static bool mmu_sync_children(struct kvm_vcpu *vcpu, protected |= rmap_write_protect(vcpu, sp->gfn); if (protected) { - kvm_flush_remote_tlbs(vcpu->kvm); + kvm_mmu_flush_or_zap(vcpu, &invalid_list, true, flush); flush = false; } -- 2.19.1.6.gb485710b