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 8FE46C63797 for ; Mon, 16 Jan 2023 11:46:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229525AbjAPLqp (ORCPT ); Mon, 16 Jan 2023 06:46:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229507AbjAPLqk (ORCPT ); Mon, 16 Jan 2023 06:46:40 -0500 Received: from mail-lf1-x12c.google.com (mail-lf1-x12c.google.com [IPv6:2a00:1450:4864:20::12c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84791166E1 for ; Mon, 16 Jan 2023 03:46:39 -0800 (PST) Received: by mail-lf1-x12c.google.com with SMTP id b3so42344826lfv.2 for ; Mon, 16 Jan 2023 03:46:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:from:to:cc:subject:date:message-id:reply-to; bh=X2OdVCxscFBwkj+WHQvDCT4AfcJ0wsNcveu9dJ6prnw=; b=aUmQL0Rs3d2DzgO79BFrfqkvipGhdBdlKzfd7auWKvFmBGOfKG+BFjEAZWrdlEQTw8 wYAcp8P/PWBak2lFktCPcHpJ9VYcf0t4dJBZd9kwKkJEHoYhq61QoopHbkFxA9GR3hmM mPhqgmNNWqDFZBID5zR1Au2vijb3xJmDXcdO6y9wUuAXYuKJgYIOPDtRc6o5+g9KLAvt kMsONe0GDMhgEkpXZRVl2XqpbiiIduxHWSWRGW3dWuLnVMIyL8kVTASM5Rnt6T/Uz80a Tm+AVc9e1q8fdCpbZ4nboMCZaTDFQH4BhLC6wa1p4Z5vksvx/jajzY4e2YMHd0bm+OQv I4aQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=X2OdVCxscFBwkj+WHQvDCT4AfcJ0wsNcveu9dJ6prnw=; b=wiazKgjehhvATtu/TRVpwldvvIWC29Xrx9qeyF7VxZ98+UifLQ0WSqdZVDkn+8gga/ oUXDuockVcleGsBUIZNIYoKEFlrszFGpGP4kfzMribetf1KFzBGYZAaUOkwnV6pclWH1 fZ+6iO9psetKFSQtqWOQE2B0IIhuV9LVbKLDX+8+4r0zkhvXqdLLyQioCyMJ3FRi59PQ NkbVRrMhDdY43koNG0fiHiIF6Vdjo2vBxEzIGPTjwGo/QqfLls9SwdExUFhaxc/nipK+ yf3rCb+DEbVSz8sTet3g2Rg0nwCnQNAIs8Y2ed9KFA4bsAg+cRxQ1GzCHj7c0Og403kh 1TeA== X-Gm-Message-State: AFqh2kpHKArShcDBxxt9PJsNt7m82DyJWDyedh9TxEY9v9crnPmvu3Hj /ywvNc0iHsbw08N4mtiBcBo= X-Google-Smtp-Source: AMrXdXsGJLfyATdXtlbR2UPnlJJ/t1q3z5q8W/hrnl+Ksa6A4k7xOXUkr7nONOdfQSqmAXOc5hbOHw== X-Received: by 2002:a19:f607:0:b0:4d2:a821:5f1c with SMTP id x7-20020a19f607000000b004d2a8215f1cmr2615405lfe.3.1673869597734; Mon, 16 Jan 2023 03:46:37 -0800 (PST) Received: from pc636 (host-90-235-24-7.mobileonline.telia.com. [90.235.24.7]) by smtp.gmail.com with ESMTPSA id k6-20020a05651c10a600b00287d9d49939sm2388853ljn.81.2023.01.16.03.46.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Jan 2023 03:46:37 -0800 (PST) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Mon, 16 Jan 2023 12:46:34 +0100 To: Baoquan He Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, urezki@gmail.com, lstoakes@gmail.com, stephen.s.brennan@oracle.com, willy@infradead.org, akpm@linux-foundation.org, hch@infradead.org Subject: Re: [PATCH v3 6/7] powerpc: mm: add VM_IOREMAP flag to the vmalloc area Message-ID: References: <20230113031921.64716-1-bhe@redhat.com> <20230113031921.64716-7-bhe@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230113031921.64716-7-bhe@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 13, 2023 at 11:19:20AM +0800, Baoquan He wrote: > Currently, for vmalloc areas with flag VM_IOREMAP set, except of the > specific alignment clamping in __get_vm_area_node(), they will be > 1) Shown as ioremap in /proc/vmallocinfo; > 2) Ignored by /proc/kcore reading via vread() > > So for the io mapping in ioremap_phb() of ppc, we should set VM_IOREMAP > in flag to make it handled correctly as above. > > Signed-off-by: Baoquan He > --- > arch/powerpc/kernel/pci_64.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c > index 0c7cfb9fab04..fd42059ae2a5 100644 > --- a/arch/powerpc/kernel/pci_64.c > +++ b/arch/powerpc/kernel/pci_64.c > @@ -132,7 +132,7 @@ void __iomem *ioremap_phb(phys_addr_t paddr, unsigned long size) > * address decoding but I'd rather not deal with those outside of the > * reserved 64K legacy region. > */ > - area = __get_vm_area_caller(size, 0, PHB_IO_BASE, PHB_IO_END, > + area = __get_vm_area_caller(size, VM_IOREMAP, PHB_IO_BASE, PHB_IO_END, > __builtin_return_address(0)); > if (!area) > return NULL; > -- > 2.34.1 > Reviewed-by: Uladzislau Rezki (Sony) -- Uladzislau Rezki