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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38669C433FE for ; Sat, 20 Nov 2021 04:51:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236952AbhKTEyp (ORCPT ); Fri, 19 Nov 2021 23:54:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236885AbhKTEyc (ORCPT ); Fri, 19 Nov 2021 23:54:32 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37BF1C061756 for ; Fri, 19 Nov 2021 20:50:57 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id j204-20020a2523d5000000b005c21574c704so18828504ybj.13 for ; Fri, 19 Nov 2021 20:50:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=reply-to:date:in-reply-to:message-id:mime-version:references :subject:from:to:cc; bh=/oTaTNiB/LMk2r2BJ6BITqZh/xo7HcDPFHBzIC0aTcA=; b=WPlmQ7dQuJ1uI7rACN8ZUhfdEkZLX56UEjuNndMAQ3iodLsdQcL9W/dj6HIkAGfGWg gE/UXDx3nWZbpHuu/aKvd0BGF8Y4CZ2BlEA7MiIfyuqECWbUdflK4LGxOxWqxQvvKpQ6 EQVb4iBn2Gx3tRIGBPzUvT7iWhRa1w8r3TgtlS/UWtpXedFuOfvUyhfyme3M40LIJZob TXrNtbo+dAE6JJVTciDHWD8Ic0AGa1fsGvhWwui5iozvPpNxdk/iGU+uO8LziEPfCEd1 NkCtk3cMnlS1TSIOGe3/yzyzoPQknV+KE2gPFW6CCG1Eo5s9Tbqb93RJDQtnxPXJ5rYV 3fpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:reply-to:date:in-reply-to:message-id :mime-version:references:subject:from:to:cc; bh=/oTaTNiB/LMk2r2BJ6BITqZh/xo7HcDPFHBzIC0aTcA=; b=v5z0OPAAQb5f/ifAEPJ7gWX9qe/RHszYQGy6PL2D3s4bIryquostAgJ44TJ+Hfu9Al apRUtdy4YsSWlfP9MHkzkYEFSrXbxMWnCKB3Vyn+i2w7LtfqzURTGibl/lKp6SIH5hPu YgK1lfJDGvSA1YQ5lqhJwG+gGY4USz3ri0GTNGr+iwpzrYKO7srbPUi1iQ5XiCzi4XEY U/kUfplGhqsdDdygDs2rWEMy59VoHHIqp2HgO3jtUYZ9pJdNqwL/KvuFaf3DLPArV3cI OWcGZVgvouFRZq2wOkR5jSjl24VoWdh/l3PRDaYF9YiiXa8Ej2SGxdYuOrFSQcFShB6G hOhw== X-Gm-Message-State: AOAM5304xe2GyYXy5g3fXT8rM0hj/m5+GlaRwG/tbN+8pbtTRinjQoaZ toX1amYKF6NLCXpy7JKquxh+LZ1JvCA= X-Google-Smtp-Source: ABdhPJzgMlxyALCEHUJnE+SUDIlZ0c3NP8y3yVfZGng2q/E/Do8yiX9PzEsWyaZAw1I4pV2C4IaOmjDRQYw= X-Received: from seanjc.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3e5]) (user=seanjc job=sendgmr) by 2002:a25:d4d5:: with SMTP id m204mr47930487ybf.418.1637383856477; Fri, 19 Nov 2021 20:50:56 -0800 (PST) Reply-To: Sean Christopherson Date: Sat, 20 Nov 2021 04:50:19 +0000 In-Reply-To: <20211120045046.3940942-1-seanjc@google.com> Message-Id: <20211120045046.3940942-2-seanjc@google.com> Mime-Version: 1.0 References: <20211120045046.3940942-1-seanjc@google.com> X-Mailer: git-send-email 2.34.0.rc2.393.gf8c9666880-goog Subject: [PATCH 01/28] KVM: x86/mmu: Use yield-safe TDP MMU root iter in MMU notifier unmapping From: Sean Christopherson To: Paolo Bonzini Cc: Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Hou Wenlong , Ben Gardon Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Use the yield-safe variant of the TDP MMU iterator when handling an unmapping event from the MMU notifier, as most occurences of the event allow yielding. Fixes: e1eed5847b09 ("KVM: x86/mmu: Allow yielding during MMU notifier unmap/zap, if possible") Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson --- arch/x86/kvm/mmu/tdp_mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 377a96718a2e..a29ebff1cfa0 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -1031,7 +1031,7 @@ bool kvm_tdp_mmu_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range, { struct kvm_mmu_page *root; - for_each_tdp_mmu_root(kvm, root, range->slot->as_id) + for_each_tdp_mmu_root_yield_safe(kvm, root, range->slot->as_id, false) flush |= zap_gfn_range(kvm, root, range->start, range->end, range->may_block, flush, false); -- 2.34.0.rc2.393.gf8c9666880-goog