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 DE5D7C433F5 for ; Sat, 20 Nov 2021 01:50:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236000AbhKTBxV (ORCPT ); Fri, 19 Nov 2021 20:53:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233135AbhKTBxS (ORCPT ); Fri, 19 Nov 2021 20:53:18 -0500 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 638E4C06173E for ; Fri, 19 Nov 2021 17:50:11 -0800 (PST) Received: by mail-pl1-x649.google.com with SMTP id 4-20020a170902c20400b0014381f710d5so5514371pll.11 for ; Fri, 19 Nov 2021 17:50:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=reply-to:date:message-id:mime-version:subject:from:to:cc; bh=/oTaTNiB/LMk2r2BJ6BITqZh/xo7HcDPFHBzIC0aTcA=; b=Y17iUQxETsjV0XAmZHTD+ZjD5tMQk/NOpkpraqf9BW2+v5JR2eBy3f1p4yCP1mV3uC PUm9MEBvTS93oMslh7RgrsjIn7MwY6k54gJbA1d9WbMvca4OO99KHtuRdpvxgnR+uFI8 LbTg7u6ztPgJXa9z5xh0G849CN6AM529jrtRS41dtzaJTlu8O0VHwLxmLIcdHfTH1nzT oEv7OW24KEsMMt+gNB/z1zgrC8XGFXUhCRr2vRbVD3sdbBDeSfePKELcnp6wMPAU86Cf f8n5fBHLETiqOcQskna/SG3gZC+RBCd39PIXox+DkR1QIc46GJKsFIYBprHQib5cj5Zr bLXA== 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:message-id:mime-version:subject :from:to:cc; bh=/oTaTNiB/LMk2r2BJ6BITqZh/xo7HcDPFHBzIC0aTcA=; b=TXSUVTGkcOmgU8txwAinzcLR2nWKYT+N3QM6cLrje1Lz/3Z5cos2qHQEtKNEYxrtUw jujCNvDLW4jIa87ClKzI5VbdRz/tI0p970toZhPQhuz2VWiRJqmFr8RQNBbQ9+TrjJRp E/XaKDPh1P/lK7wpGpkdUzcbuZFEIxvSiSQxO0xHkPeQm5fj0PHVDjmvxuODcVA6wVCp x0azPSnuk4PnWDtMARxnJxLXqh6gdZmi9SDhB5d5Xbo3KOBeV8t+s9wtoKVmoovyZLO4 ghmMgqL3oWV/7olvJA93yGgtNoO4pnHeLpX3DADcxi/1stUFfLHW6IGTPwhzfMWWZg8e AAtA== X-Gm-Message-State: AOAM532s+l/zCiBjBn2A3rFE6izKzQ8cZUEnQOrsswVSXVITKVH7xt7h M/XvHNcVVPoHAVRuOtEBkh6A/0VdUII= X-Google-Smtp-Source: ABdhPJw57b08V0yHzRvjztHGvC6NDI5qlJErpxBPqWosR83M55tCfe2R+c09/5jVgLkTn+wpYzGFXH7ZbEQ= X-Received: from seanjc.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3e5]) (user=seanjc job=sendgmr) by 2002:a17:90b:3a89:: with SMTP id om9mr5591281pjb.29.1637373010794; Fri, 19 Nov 2021 17:50:10 -0800 (PST) Reply-To: Sean Christopherson Date: Sat, 20 Nov 2021 01:50:08 +0000 Message-Id: <20211120015008.3780032-1-seanjc@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.34.0.rc2.393.gf8c9666880-goog Subject: [PATCH] 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 Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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