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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 3 Dec 2019 03:48:16 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xB33lZVF46661902 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 3 Dec 2019 03:47:35 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9AD545204F; Tue, 3 Dec 2019 03:48:15 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 4911652059; Tue, 3 Dec 2019 03:48:15 +0000 (GMT) Received: from adsilva.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id 60092A03CC; Tue, 3 Dec 2019 14:48:12 +1100 (AEDT) From: "Alastair D'Silva" To: alastair@d-silva.org Subject: [PATCH v2 04/27] mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called from drivers Date: Tue, 3 Dec 2019 14:46:32 +1100 X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191203034655.51561-1-alastair@au1.ibm.com> References: <20191203034655.51561-1-alastair@au1.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19120303-0016-0000-0000-000002D0158B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19120303-0017-0000-0000-000033320CA4 Message-Id: <20191203034655.51561-5-alastair@au1.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-02_06:2019-11-29,2019-12-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 suspectscore=3 lowpriorityscore=0 phishscore=0 priorityscore=1501 impostorscore=0 clxscore=1015 adultscore=0 mlxlogscore=893 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912030032 Message-ID-Hash: JHEVY7BJM5UXXKAZ2ZAHIMBKN3DAZ4XK X-Message-ID-Hash: JHEVY7BJM5UXXKAZ2ZAHIMBKN3DAZ4XK X-MailFrom: alastair@au1.ibm.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Frederic Barrat , Andrew Donnellan , Arnd Bergmann , Greg Kroah-Hartman , Andrew Morton , Mauro Carvalho Chehab , "David S. Miller" , Rob Herring , Anton Blanchard , Krzysztof Kozlowski , Mahesh Salgaonkar , Madhavan Srinivasan , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Anju T Sudhakar , Hari Bathini , Thomas Gleixner , Greg Kurz , Nicholas Piggin , Masahiro Yamada , Alexey Kardashevskiy , linux-kernel@vger.kernel.org, linuxppc-dev@list s.ozlabs.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Alastair D'Silva When setting up OpenCAPI connected persistent memory, the range check may not be performed until quite late (or perhaps not at all, if the user does not establish a DAX device). This patch makes the range check callable so we can perform the check while probing the OpenCAPI SCM device. Signed-off-by: Alastair D'Silva --- include/linux/memory_hotplug.h | 5 +++++ mm/memory_hotplug.c | 4 ++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index f46ea71b4ffd..3f3a010b60d2 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -339,6 +339,11 @@ static inline int remove_memory(int nid, u64 start, u64 size) static inline void __remove_memory(int nid, u64 start, u64 size) {} #endif /* CONFIG_MEMORY_HOTREMOVE */ +#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE +int check_hotplug_memory_addressable(unsigned long pfn, + unsigned long nr_pages); +#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */ + extern void __ref free_area_init_core_hotplug(int nid); extern int __add_memory(int nid, u64 start, u64 size); extern int add_memory(int nid, u64 start, u64 size); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index b5be827ecda5..abd9624bd0c1 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -278,8 +278,8 @@ static int check_pfn_span(unsigned long pfn, unsigned long nr_pages, return 0; } -static int check_hotplug_memory_addressable(unsigned long pfn, - unsigned long nr_pages) +int check_hotplug_memory_addressable(unsigned long pfn, + unsigned long nr_pages) { const u64 max_addr = PFN_PHYS(pfn + nr_pages) - 1; -- 2.23.0 _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org