Message ID | 20190620091626.31824-6-aneesh.kumar@linux.ibm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Thu, 20 Jun 2019 09:17:17 +0000 (GMT) From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> To: dan.j.williams@intel.com Subject: [PATCH v4 5/6] mm/nvdimm: Use correct alignment when looking at first pfn from a region Date: Thu, 20 Jun 2019 14:46:25 +0530 Message-Id: <20190620091626.31824-6-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190620091626.31824-1-aneesh.kumar@linux.ibm.com> References: <20190620091626.31824-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-20_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=880 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906200068 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." <linux-nvdimm.lists.01.org> List-Unsubscribe: <https://lists.01.org/mailman/options/linux-nvdimm>, <mailto:linux-nvdimm-request@lists.01.org?subject=unsubscribe> List-Archive: <http://lists.01.org/pipermail/linux-nvdimm/> List-Post: <mailto:linux-nvdimm@lists.01.org> List-Help: <mailto:linux-nvdimm-request@lists.01.org?subject=help> List-Subscribe: <https://lists.01.org/mailman/listinfo/linux-nvdimm>, <mailto:linux-nvdimm-request@lists.01.org?subject=subscribe> Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>, linux-nvdimm@lists.01.org Content-Type: text/plain; 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Series |
Fixes related namespace alignment/page size/big endian
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expand
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diff --git a/kernel/memremap.c b/kernel/memremap.c index a0e5f6b91b04..63800128844b 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -58,9 +58,11 @@ static unsigned long pfn_first(struct dev_pagemap *pgmap) struct vmem_altmap *altmap = &pgmap->altmap; unsigned long pfn; - pfn = PHYS_PFN(res->start); - if (pgmap->altmap_valid) - pfn += vmem_altmap_offset(altmap); + if (pgmap->altmap_valid) { + pfn = altmap->base_pfn + vmem_altmap_offset(altmap); + } else + pfn = PHYS_PFN(res->start); + return pfn; }
vmem_altmap_offset() adjust the section aligned base_pfn offset. So we need to make sure we account for the same when computing base_pfn. ie, for altmap_valid case, our pfn_first should be: pfn_first = altmap->base_pfn + vmem_altmap_offset(altmap); Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> --- kernel/memremap.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)