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From: "Qiu, Michael" <michael.qiu@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Thread-Topic: [dpdk-dev] [RFC] vfio: only map regions VFIO supports
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Date: Tue, 14 Jul 2015 10:45:17 +0000
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [RFC] vfio: only map regions VFIO supports
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Hi, Stephen=0A=
=0A=
I have found out the root cause of this bug, and generate a patch.=0A=
=0A=
Will send out later after :)=0A=
=0A=
Thanks,=0A=
Michael=0A=
=0A=
On 7/11/2015 1:24 AM, Stephen Hemminger wrote:=0A=
> On Fri, 10 Jul 2015 07:54:10 +0000=0A=
> "Qiu, Michael" <michael.qiu@intel.com> wrote:=0A=
>=0A=
>> Hi, Stephen=0A=
>>=0A=
>> This patch does not work for fm10k with vfio, see error below:=0A=
>>=0A=
>> EAL: PCI device 0000:84:00.0 on NUMA socket 1=0A=
>> EAL:   probe driver: 8086:15a4 rte_pmd_fm10k=0A=
>> EAL:   PCI memory mapped at 0x7f1980000000=0A=
>> EAL: Trying to map BAR 2 that contains the MSI-X table. Trying offsets:=
=0A=
>> 0000:0000, 1000:1000=0A=
>> EAL:   PCI memory mapped at 0x7f1980401000=0A=
>> EAL: pci_map_resource(): cannot mmap(105, 0x7f1980402000, 0x4000000,=0A=
>> 0x0): Invalid argument (0xffffffffffffffff)=0A=
>> EAL:   0000:84:00.0 mapping BAR4 failed: Invalid argument=0A=
>> EAL: Error - exiting with code: 1=0A=
>>   Cause: Requested device 0000:84:00.0 cannot be used=0A=
> Yes. The patch doesn't solve the problem (but might be needed in some fut=
ure weird hw).=0A=
>=0A=
>=0A=
=0A=