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 95CCAC7EE43 for ; Thu, 24 Aug 2023 15:00:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240345AbjHXPAb (ORCPT ); Thu, 24 Aug 2023 11:00:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241993AbjHXPAI (ORCPT ); Thu, 24 Aug 2023 11:00:08 -0400 Received: from mail-pg1-x54a.google.com (mail-pg1-x54a.google.com [IPv6:2607:f8b0:4864:20::54a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D23B1BE6 for ; Thu, 24 Aug 2023 08:00:04 -0700 (PDT) Received: by mail-pg1-x54a.google.com with SMTP id 41be03b00d2f7-56c379a8250so4697892a12.0 for ; Thu, 24 Aug 2023 08:00:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1692889204; x=1693494004; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Qsu60wTG8AVkLDYq+gXQfYDEyCx9N3ghgdVFvKqavKw=; b=Y2f43sSu1xbW9I4if4DDu1HhOslQy8QKrSlegj752bgJM4thRpMDiYB66AaVmruiaU O7oLvdvEw7V+6Y7mczElBrJ53+kLu+mMW6z/cRyOHxpU64uI53flTuz3o57FMef8W1uK Xn43rAbMfQA3uzjJ223aweuQ/O6rkwaL3q8Cn7SK4OQGlCL7z/jv29kIGCYcZ4UcJMir V0YEE4GqnnrUIh+rmCUEyr7/maxBdPDdWB74HeGDTb3GMgfLzLCYyQU1kYftPal9HA6F bWrxZYHya5IWUYl3uykhVIhqEmurOREb2NqTELjN/pQmMN4UbtBWE7JTP7X1v+NxXzvt LFyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692889204; x=1693494004; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Qsu60wTG8AVkLDYq+gXQfYDEyCx9N3ghgdVFvKqavKw=; b=OO0p9alqKCX4KR3WgYFV4qMjGmXXpXhIy3z191vLSPxSYiqyeUjXWxMzdK1OFF+ase iUl/P0m59zJ+NPk3gsIYcAcA2DAsvpMn6NuTbuh7r9DIKgrMduCnlz9cRHZEdWSEIMMu gKDjcyrXj8V0c3hZz/1YXcb9G45GuzbXlq+WOHwRS1m2VyRDTXn1BfXG8TRNb5rn8Sv4 +ijl8uLBrVOmySOWnrQEWQdVa8QiK8rP5RX9HThOexoaVeMmebQJ0sRnaYwYKSehkvBJ ALfFSKaoxeYaLb8dfpZjiEpU5FArUQBXs2MfLL7rJTXr1l2kcnJZzokYCrl7ZOTriKdz 5gWA== X-Gm-Message-State: AOJu0YySgNYG1T2NAH/oXOOauJbsR03A+r+NLqbIV+ecCWCUCpOuz6wH ypJcL9E/ySPPa1y7ovT+ea6GmanFOVs= X-Google-Smtp-Source: AGHT+IHbW/tvpDFMlAKxJ339o5wxxroXUvlUg85wo3s3hE8PuqSOrXLNVMrkUcL65C45EHyPEIY3cUnUwes= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a63:6f86:0:b0:56c:50c0:fbad with SMTP id k128-20020a636f86000000b0056c50c0fbadmr1782203pgc.8.1692889203873; Thu, 24 Aug 2023 08:00:03 -0700 (PDT) Date: Thu, 24 Aug 2023 08:00:01 -0700 In-Reply-To: <7f9587ed-36af-4cfe-3699-45ceb63b15c6@grsecurity.net> Mime-Version: 1.0 References: <20230824010512.2714931-1-seanjc@google.com> <7f9587ed-36af-4cfe-3699-45ceb63b15c6@grsecurity.net> Message-ID: Subject: Re: [PATCH 5.15] Revert "KVM: x86: enable TDP MMU by default" From: Sean Christopherson To: Mathias Krause Cc: stable@vger.kernel.org, Greg Kroah-Hartman , Paolo Bonzini , linux-kernel@vger.kernel.org, Jeremi Piotrowski Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Thu, Aug 24, 2023, Mathias Krause wrote: > On 24.08.23 03:15, Sean Christopherson wrote: > >> This reverts commit 71ba3f3189c78f756a659568fb473600fd78f207. > >> > >> Link: https://lore.kernel.org/all/ZDmEGM+CgYpvDLh6@google.com > >> Link: https://lore.kernel.org/all/f023d927-52aa-7e08-2ee5-59a2fbc65953@gameservers.com > >> Cc: Jeremi Piotrowski > >> Cc: Mathias Krause > >> 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 6c2bb60ccd88..7a64fb238044 100644 > >> --- a/arch/x86/kvm/mmu/tdp_mmu.c > >> +++ b/arch/x86/kvm/mmu/tdp_mmu.c > >> @@ -10,7 +10,7 @@ > >> #include > >> #include > >> > >> -static bool __read_mostly tdp_mmu_enabled = true; > >> +static bool __read_mostly tdp_mmu_enabled = false; > >> module_param_named(tdp_mmu, tdp_mmu_enabled, bool, 0644); > >> > >> /* Initializes the TDP MMU for the VM, if enabled. */ > >> > >> base-commit: f6f7927ac664ba23447f8dd3c3dfe2f4ee39272f > >> -- > > Acked-by: Mathias Krause > > I guess this means no hope for > https://lore.kernel.org/stable/234e01b6-1b5c-d682-a078-3dd91a62abf4@grsecurity.net/ > :/ Ya, not going to happen, sorry :-(