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 3BDF1C433EF for ; Tue, 26 Apr 2022 17:13:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354138AbiDZRQv (ORCPT ); Tue, 26 Apr 2022 13:16:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352707AbiDZROx (ORCPT ); Tue, 26 Apr 2022 13:14:53 -0400 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0203532EFC for ; Tue, 26 Apr 2022 10:11:29 -0700 (PDT) Received: by mail-wr1-x42b.google.com with SMTP id t6so22953505wra.4 for ; Tue, 26 Apr 2022 10:11:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=pamMaaVZYdygrWXDRxaeRqbvXXd7KzsUab9eejNupEM=; b=OMe/wMtEHmzc+4un6Figod63BYFZ5h1tujb66Jnawj3zsgyNLOfve5RqPrJl5/0X1F +iPjHur9QY6tKsw8nMP/XkE2scN9eIq21Ma56UXjizbhU9YyKUyCOx3ecBPBh4uT9WUb KaPr6GMbTqQdpZ080OHQSC4nBSNMGdrrGxCW9Vg8VQPF4rW80XlC5EQoMd2QectU77uB HhAqHp4gBRO49gHVqTnULoMkCscMrr4/uy+m/O3YZqb4xcmg9DAZVyZs8Ncb0FybKqAB IV7G2jKtYfGUY1YwUiOEgpNCUIlt8LsqHSCV3XZxD4lDFHhRk2WhZQ+2mUWx1BHeYgJZ dBeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:message-id:date:mime-version:user-agent :subject:content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=pamMaaVZYdygrWXDRxaeRqbvXXd7KzsUab9eejNupEM=; b=HxDrItQILw6iTpB5ac74u/JfIwmntFH1YFBzJm3k/X+UvqRhVBXhNT+zG3wZqgk/cV slf6g1j5+970JPmsd11/76xTFQHiRa9TGhIs2u3WeqWVTOD/5wddOJugwhLXScY6O7P6 xW+S9cprOMOhuz+vCEIj+QfGwE41aGTXaeY1Yu+h/eDP85dcBXfD27p0W9G3yAAwJjjr 9JluCUn77xDF0VYH1LvldNVcsSTaOEjIGeHiFFyzmbtlzY/tris846g6bnJAFSUgo6rb xDfwKqkgar5jneKzHvdZfgIR2uBrVMaERR31d/czpUR6ZQtY8hr5ZR9UlI5zPQzy/kyB pVNg== X-Gm-Message-State: AOAM530LxojsnfGy1ZKEcK4XwLWDZ95dArVg64vg9qRzAFckqihtZWnT gumTtgpeHzaIdbxIWw5GXu0= X-Google-Smtp-Source: ABdhPJxYCA9Qx+BhHfzATKCmDicrXdteAdALSWfqV3gsh8RgXoBS2FPfaCWAK8GY4OEBreBmrYRV3g== X-Received: by 2002:a05:6000:1e05:b0:20a:ecc7:41cf with SMTP id bj5-20020a0560001e0500b0020aecc741cfmr255937wrb.102.1650993087399; Tue, 26 Apr 2022 10:11:27 -0700 (PDT) Received: from ?IPV6:2001:b07:6468:f312:1c09:f536:3de6:228c? ([2001:b07:6468:f312:1c09:f536:3de6:228c]) by smtp.googlemail.com with ESMTPSA id c3-20020a05600c148300b0038ebc8ad740sm75025wmh.1.2022.04.26.10.11.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Apr 2022 10:11:26 -0700 (PDT) Sender: Paolo Bonzini Message-ID: Date: Tue, 26 Apr 2022 19:11:26 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: kvm_gfn_to_pfn_cache_refresh started getting a warning recently Content-Language: en-US To: Sean Christopherson , Maxim Levitsky Cc: "kvm@vger.kernel.org" , David Woodhouse References: From: Paolo Bonzini In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 4/26/22 18:45, Sean Christopherson wrote: > On Tue, Apr 26, 2022, Maxim Levitsky wrote: >> [ 390.511995] BUG: sleeping function called from invalid context at include/linux/highmem-internal.h:161 >> [ 390.513681] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 4439, name: CPU 0/KVM > > This is my fault. memremap() can sleep as well. I'll work on a fix. Indeed, "KVM: Fix race between mmu_notifier invalidation and pfncache refresh" hadn't gone through a full test cycle yet. Paolo