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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22F7CC433F5 for ; Fri, 29 Apr 2022 13:19:48 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B1BCD6B0072; Fri, 29 Apr 2022 09:19:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id ACA4F6B0073; Fri, 29 Apr 2022 09:19:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 993226B0074; Fri, 29 Apr 2022 09:19:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.a.hostedemail.com [64.99.140.24]) by kanga.kvack.org (Postfix) with ESMTP id 8C2C46B0072 for ; Fri, 29 Apr 2022 09:19:47 -0400 (EDT) Received: from smtpin22.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 66E19263C9 for ; Fri, 29 Apr 2022 13:19:47 +0000 (UTC) X-FDA: 79409974014.22.1FE944F Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf17.hostedemail.com (Postfix) with ESMTP id B13DE40066 for ; Fri, 29 Apr 2022 13:19:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1651238386; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=uC80K2JcwhpHl9wyzV7n0RzilJpR226HPF0HUL7DEq0=; b=OQZKLpAo5K3plnCCL0ZJt14vWajkAkzKc2u4pkHmrscq2sNY0sI25uGx/E2+ObOk15I7sI f+qm8xoa7Urue/3rqNxIZjfXL9kmxKSXAeELNdZkwQ8Z7vnOjB4w6AHLuynrqCxq0yHTUM /CQ7zkS4bHhPjiFEWXrF0AINgSa+1wg= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-634-vk82ltftOA6cWk439Qv-Jg-1; Fri, 29 Apr 2022 09:19:40 -0400 X-MC-Unique: vk82ltftOA6cWk439Qv-Jg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8BC2F8002B2; Fri, 29 Apr 2022 13:19:39 +0000 (UTC) Received: from fedora (unknown [10.22.16.76]) by smtp.corp.redhat.com (Postfix) with SMTP id BF50B2166B4D; Fri, 29 Apr 2022 13:19:13 +0000 (UTC) Date: Fri, 29 Apr 2022 10:19:12 -0300 From: Wander Lairson Costa To: "Kirill A. Shutemov" Cc: Borislav Petkov , Andy Lutomirski , Sean Christopherson , Andrew Morton , Joerg Roedel , Ard Biesheuvel , Andi Kleen , Kuppuswamy Sathyanarayanan , David Rientjes , Vlastimil Babka , Tom Lendacky , Thomas Gleixner , Peter Zijlstra , Paolo Bonzini , Ingo Molnar , Varad Gautam , Dario Faggioli , Dave Hansen , Brijesh Singh , Mike Rapoport , David Hildenbrand , x86@kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Rapoport Subject: Re: [PATCHv5 07/12] x86/mm: Reserve unaccepted memory bitmap Message-ID: References: <20220425033934.68551-1-kirill.shutemov@linux.intel.com> <20220425033934.68551-8-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220425033934.68551-8-kirill.shutemov@linux.intel.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: B13DE40066 X-Stat-Signature: w1b1hxqnm535i6y1xxwiobf3ptmqr18u Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=OQZKLpAo; spf=none (imf17.hostedemail.com: domain of wander@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=wander@redhat.com; dmarc=pass (policy=none) header.from=redhat.com X-HE-Tag: 1651238377-180554 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Apr 25, 2022 at 06:39:29AM +0300, Kirill A. Shutemov wrote: > A given page of memory can only be accepted once. The kernel has a need > to accept memory both in the early decompression stage and during normal > runtime. > > A bitmap used to communicate the acceptance state of each page between the nit: s/bitmap used/bitmap is used/ [snip]