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 7FD84C433FE for ; Mon, 14 Nov 2022 14:09:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236845AbiKNOJG (ORCPT ); Mon, 14 Nov 2022 09:09:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236828AbiKNOJD (ORCPT ); Mon, 14 Nov 2022 09:09:03 -0500 Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5C1E22BF8 for ; Mon, 14 Nov 2022 06:09:01 -0800 (PST) Received: by mail-lf1-x12e.google.com with SMTP id r12so19473522lfp.1 for ; Mon, 14 Nov 2022 06:09:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=7bxYVgpnsGzW86VQq7hMIoZbZDot9yO7odIkSzWAAKs=; b=lkGMB6zU+rGNPUbuWU7J/kalVndvafqvCQHqVEAt+K5Wf6LBwsPdnEgbWIlUg2bJ+b w1KuXJPrLm1Gc4WbJSjr61zfxDxoSRqaMUOKA75uEZiE7rlOMbPQbX+ps4hKlrh9276u WtsjLF58d0exWYff01tOjyQregQZcq18u4ATTK8GUYrcWt3Dn4qBVNmVOKmve4zWc/kI Xbz1SqVK6lxp8/AIZeT5Ce0mho2ZkfCEYyumXwJo4CVhjyYCJ7lEEDLLNCnMjZcQdVWe RURUdFxjMj4IpyplbyRXuf4LrZpir5AONHNM04UzgtFZcVOYkjbu4XehLm+2JrrKaocH +iEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=7bxYVgpnsGzW86VQq7hMIoZbZDot9yO7odIkSzWAAKs=; b=fOtcNeaqXUYXPsqgGVIaZwxT1Ze8nlJpa9Gh5jvheYD+0IV1x1NXsVYT9/j5RbuIoD KNjsVBenR4u3ZqAmAgT6/OQXeFBwtB/r36HdAEuk3SDPkPLj9I57TOBRu6q0FfODa/N1 270qOD4zAzKFI/d9lGaJR1O+tzWxhl15I4yUJpjMHLN49uOtXpr4Z7mXGS2/d66kfwux lxY79HE5HVRdmLJuxQjUQX9sJm2mN6PrIVNOwYAbWCB+JsMUCOIbPPZLQ3yWJfcIA2bd t1GRDEGNp3eaF/xxOx52U6KqubPqbPDKVDn+NvOgjfzcS6kORDI6mOFlqRKQTZBcfV7e pJOg== X-Gm-Message-State: ANoB5pn8XEVDxweFf/p8ycVxSAYlYZ3xKUx37VNpCNszIvACjWCfYC81 AQ4ODD3Di3avg7cjQGCXzdA= X-Google-Smtp-Source: AA0mqf7nuWOLBi416tkfsXCMX4umRIHXrAX4jMyfRJo/6WI7kSOJ9qaswZrwYjYhjoZVa2gmND6jBw== X-Received: by 2002:a19:2d53:0:b0:499:cce2:12d9 with SMTP id t19-20020a192d53000000b00499cce212d9mr4578763lft.4.1668434940040; Mon, 14 Nov 2022 06:09:00 -0800 (PST) Received: from ?IPV6:2a02:6b8:0:107:3e85:844d:5b1d:60a? ([2a02:6b8:0:107:3e85:844d:5b1d:60a]) by smtp.gmail.com with ESMTPSA id x3-20020a056512078300b004a44ffb1050sm1847952lfr.171.2022.11.14.06.08.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Nov 2022 06:08:59 -0800 (PST) Message-ID: Date: Mon, 14 Nov 2022 17:09:00 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 Subject: Re: [PATCH v2 1/5] x86/mm: Recompute physical address for every page of per-CPU CEA mapping To: Sean Christopherson , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org Cc: "H. Peter Anvin" , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, syzbot+ffb4f000dc2872c93f62@syzkaller.appspotmail.com, syzbot+8cdd16fd5a6c0565e227@syzkaller.appspotmail.com References: <20221110203504.1985010-1-seanjc@google.com> <20221110203504.1985010-2-seanjc@google.com> Content-Language: en-US From: Andrey Ryabinin In-Reply-To: <20221110203504.1985010-2-seanjc@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/10/22 23:35, Sean Christopherson wrote: > Recompute the physical address for each per-CPU page in the CPU entry > area, a recent commit inadvertantly modified cea_map_percpu_pages() such > that every PTE is mapped to the physical address of the first page. > > Fixes: 9fd429c28073 ("x86/kasan: Map shadow for percpu pages on demand") > Cc: Andrey Ryabinin > Signed-off-by: Sean Christopherson Reviewed-by: Andrey Ryabinin