From: Yong Wang <yongwang@vmware.com>
To: anatoly.burakov@intel.com
Cc: dev@dpdk.org, Yong Wang <yongwang@vmware.com>,
Ronghua Zhang <rzhang@vmware.com>
Subject: [dpdk-dev] [PATCH 1/2] vfio: fix pci_vfio_map_resource
Date: Thu, 7 Jul 2016 15:26:36 -0700 [thread overview]
Message-ID: <1467930397-39777-1-git-send-email-yongwang@vmware.com> (raw)
The offset of the 2nd mmap when mapping the region after msix_bar
needs to take region address into consideration. This is exposed
when using vfio-pci to manage vmxnet3 pmd.
Fixes: 90a1633b2347 ("eal/linux: allow to map BARs with MSI-X tables")
Signed-off-by: Yong Wang <yongwang@vmware.com>
Signed-off-by: Ronghua Zhang <rzhang@vmware.com>
---
lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
index f91b924..3729c35 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
@@ -896,7 +896,7 @@ pci_vfio_map_resource(struct rte_pci_device *dev)
} else {
memreg[0].offset = reg.offset;
memreg[0].size = table_start;
- memreg[1].offset = table_end;
+ memreg[1].offset = reg.offset + table_end;
memreg[1].size = reg.size - table_end;
RTE_LOG(DEBUG, EAL,
@@ -939,7 +939,8 @@ pci_vfio_map_resource(struct rte_pci_device *dev)
/* if there's a second part, try to map it */
if (map_addr != MAP_FAILED
&& memreg[1].offset && memreg[1].size) {
- void *second_addr = RTE_PTR_ADD(bar_addr, memreg[1].offset);
+ void *second_addr = RTE_PTR_ADD(bar_addr,
+ memreg[1].offset - memreg[0].offset);
map_addr = pci_map_resource(second_addr,
vfio_dev_fd, memreg[1].offset,
memreg[1].size,
--
1.9.1
next reply other threads:[~2016-07-07 22:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-07 22:26 Yong Wang [this message]
2016-07-07 22:26 ` [dpdk-dev] [PATCH 2/2] vfio: fix coding style Yong Wang
2016-07-14 13:25 ` [dpdk-dev] [PATCH 1/2] vfio: fix pci_vfio_map_resource Thomas Monjalon
2016-07-14 14:50 ` Burakov, Anatoly
2016-07-14 15:34 ` Dan Aloni
2016-07-15 0:15 ` [dpdk-dev] [PATCH v2] " Yong Wang
2016-07-15 13:05 ` Burakov, Anatoly
2016-07-15 15:32 ` Thomas Monjalon
2016-07-15 16:42 ` Thomas Monjalon
2016-07-15 16:56 ` Thomas Monjalon
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