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[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> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 5EA9440014 X-Stat-Signature: hqhtg1um56aajy75hgixhj4z1enzx57b X-Rspam-User: X-HE-Tag: 1673869599-27524 X-HE-Meta: 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 7oeTFQEI EVKC6b66UoCeSwHKzyRyRq6H3QtNtENts91uS4p8zCzdw8YD4u5evKft4THZ8MMPNBHva/0YlPccrsfG38pHx43yi3aJH95NBT+rYyn3V3Q3xKwroPZK7bNirgoptTah6ywenjScoCMV9NpU= 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 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