From: vijay mohan <vijay1054@gmail.com>
To: dev@dpdk.org
Subject: [dpdk-dev] pci device access from dpdk secondary process with igb_uio
Date: Thu, 26 Dec 2019 16:58:39 -0800 [thread overview]
Message-ID: <CAJ++VZOZd38KC0r02XrOLhsTiDCHBKcayeGT9LP8YeNdj14ZWg@mail.gmail.com> (raw)
Hi All,
I am trying to use pci vf device with secondary process in a multiple
process mode and finding pci_dev->mem_resource[0].addr to be NULL. This
happens when the pci device is attached to igb_uio.ko but with vfio_pci it
works fine.
Looking at the pci device initialization part for secondary process, when
device is presented through igb_uio, (in pci_uio_map_secondary), it doesn't
seems to update pci_dev->mem_resource[X].addr. For vfio-pci, it updates the
addresses in pci_vfio_map_resource_secondary. With the following patch, i
am able to use the device from secondary process but would like to know if
I am missing something.
diff --git a/drivers/bus/pci/pci_common_uio.c
b/drivers/bus/pci/pci_common_uio.c
index 7ea73db..f4dca9d 100644
--- a/drivers/bus/pci/pci_common_uio.c
+++ b/drivers/bus/pci/pci_common_uio.c
@@ -70,6 +70,7 @@
}
return -1;
}
+ dev->mem_resource[i].addr = mapaddr;
}
return 0;
}
next reply other threads:[~2019-12-27 1:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-27 0:58 vijay mohan [this message]
2020-01-02 18:58 ` vijay mohan
2020-01-22 17:19 ` Trahe, Fiona
2020-02-25 15:09 ` Trahe, Fiona
2020-02-25 19:45 ` vijay mohan
2020-03-04 12:32 ` Ferruh Yigit
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