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bh=lNZtN3K6Lqx2kVVKvoFNyaccpQbarea9cnt235tEpuI=; b=DJqzE4cZugChgPtbOZJGefI7qSil3hiuh34z+9SaQyB56fvDVxDm2d+n0MYUNQIwL07n08 bUNuWvyG44RYyI0Dxixf21ycbq2l1rkb5SElyv+rWsrOJ/2ioaBEvUKOJu7PNfQTHoXtKD EYEFScLS8Z8vrQsPcgSmnget0xnsw14= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-491-Ny2Zzr1OOLWi1hrheDXFew-1; Mon, 06 Feb 2023 03:40:57 -0500 X-MC-Unique: Ny2Zzr1OOLWi1hrheDXFew-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 A3AE73C025BC; Mon, 6 Feb 2023 08:40:56 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (ovpn-12-71.pek2.redhat.com [10.72.12.71]) by smtp.corp.redhat.com (Postfix) with ESMTP id CAA0C2166B29; Mon, 6 Feb 2023 08:40:52 +0000 (UTC) From: Baoquan He To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, akpm@linux-foundation.org, stephen.s.brennan@oracle.com, urezki@gmail.com, lstoakes@gmail.com, error27@gmail.com, Baoquan He Subject: [PATCH v5 6/7] powerpc: mm: add VM_IOREMAP flag to the vmalloc area Date: Mon, 6 Feb 2023 16:40:19 +0800 Message-Id: <20230206084020.174506-7-bhe@redhat.com> In-Reply-To: <20230206084020.174506-1-bhe@redhat.com> References: <20230206084020.174506-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 X-Stat-Signature: 3e8fpumt5ga3cm3suj6w6tb1aa67iidh X-Rspam-User: X-Rspamd-Queue-Id: 30CBD180012 X-Rspamd-Server: rspam06 X-HE-Tag: 1675672861-726367 X-HE-Meta: U2FsdGVkX1+vTPkYzhXJltBeqWuhIV9QkJ6jbsHkJo1ZlMNGSZF7OlIHMUuCJrSV+oclJUQR/y2ALNNE16KguRIE21hW3N1dt3gOxjVAGbGXdJyCsxBolzyH46qDZ4ZIZgBPsKCZ8UHjGXU7LaskwpjI/1Zq2TsnRkwnMlg5fxKO/q5QBhETgdt9kaWOFu9wc08LRoMe3WyyDeQVMS4ku/P411iNRf84D1eUdkxdwaW9aaiiQT4OmHFA41M5XTQLDu3fS4LKyVb+aSv5pTl+XAK7fFpNqS+FTvK3hkz/jQFee+rHVk84ftSVjsMzoclwCcoB8BnvNMav++yz6a3YhaNQH0YKDblDH4ghmANtb8o2tqSyd212bAXHqUvDgS2X5699Q3qZE46Ltv2kgmRu4dgBqymxI/a5ODNLIFq0POzYiCyWI9ydtLiOXzNidErS0+ndoADFmeBGw1oCOnQWf5lX2+JnScaxZKk3N67jK/Aqwqvd71j094dS10npfCtjzCbARh0ReERQhQaFPVVtJ0iiE/V4j0vHNMcnmVcvCLuJSE54EZsVXpUQS9OLl5q1NptF0+fzSDTwlWkq1zjL0AobSeOgL9J6UhO2UBdvGF9l6d/UCbUMzLROIV3a5Re3mNGtwNAJ801Xw6DXKa0n9/iY5b6p8Za6a8vXfkOVuSpuGCoG/Flbb1H7TBykX/G0dGNVzdKNXa8tiYo8JM6mkoIDdy3qQx4rB+ZssBbdIAjStfSpCbjXD1mJNqpmdqpj1O/GLknB2AvZ7I528bek1J/O+hCHCcpM6M30aYHmuT3MsdBP6p6LgJSlQAGAtDKv0mIeWwsjvCxXGJf8mSshsrrroD36UKRaOQ9BYx8ExTU3xKXRBiVaF44tPbLXSu6LNlZJA/kV1Sx05SebZbIjU/sXP3h+0iXVA58aDJqnTgjReS7d3NiacatyIOm3AuI29AkWbrKUMxR/RHsPRoW YQJ6N372 JaA1J/8e1BPNzw0Xzuln3Y9udMB2kWcipKoFCZRWgqBlMtI5Ti9JhCTPVTzQzatZAAew8yfjS4I6T2Y0I+CG6WJY5RMCaqLcACGVlWIrpGJIbqJN0ZtOjDDxYTK0IQNUF2dOOHx/Awjel3CkyDXHHEZIl4PuaeHe3cKhDeZ7f0HuhVfrSWoXF/4Yks8VNK+xRUEaWZcEzAlTQng24ItLCExtm6AS5q9g/Vpm5RiJoLXnr8GbCCBRYlex5UEqXJ8MeaDec 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: 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 Reviewed-by: Lorenzo Stoakes Reviewed-by: Uladzislau Rezki (Sony) --- 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;