Re: SRIOV memory allocation
More info:
http://communities.intel.com/community/wired/blog/2011/01/19/come-and-get-it-sr-iov-primer-document-updated
as indicated from here:
http://communities.intel.com/message/132184#132184
On Tue, Apr 10, 2012 at 12:15 AM, Peter Teoh wrote:
> Is your system 32bit or 64bit? Before putting the card, there was no
> memory problem right?
>
> And after putting in the card, memory resources all get used up right (by
> IOV)? It looked like it is similar to this problem:
>
> http://communities.intel.com/thread/23318
>
> From above and here:
>
> http://www.mjmwired.net/kernel/Documentation/PCI/pci-iov-howto.txt
>
> it seemed that this hardware feature requires BIOS support, and so if ur
> hardware does not have it, SR-IOV is not possible, thus giving rise to
> those errors u have seen.
>
> On Sat, Apr 7, 2012 at 4:11 PM, J.Hwan Kim wrote:
>
>> Hi, everyone
>>
>> I'd like to know what routine of the PCIe allocates SR-IOV BAR memory.
>>
>> When I put into the network card supporting SR-IOV in my system,
>> it returns error indicating "MMIO resource" is insufficient when sriov
>> is enabled.
>>
>> The routine is in iov.c
>>
>> for (i = 0; i < PCI_SRIOV_NUM_BARS/*6*/; i++) {
>> res = dev->resource + PCI_IOV_RESOURCES + i;
>> if (res->parent)
>> nres++;
>> }
>> if (nres != iov->nres) {
>> dev_err(&dev->dev, "not enough MMIO resources for SR-IOV\n");
>> return -ENOMEM;
>> }
>>
>> So, I hope to know where the resources of IOV is assigned the parent
>> pointer.
>>
>> Thanks in advance.
>>
>> Best Regards,
>> J.Hwan Kim
>>
>>
>> ___
>> Kernelnewbies mailing list
>> Kernelnewbies@kernelnewbies.org
>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>
>
>
>
> --
> Regards,
> Peter Teoh
>
--
Regards,
Peter Teoh
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Re: SRIOV memory allocation
Is your system 32bit or 64bit? Before putting the card, there was no
memory problem right?
And after putting in the card, memory resources all get used up right (by
IOV)? It looked like it is similar to this problem:
http://communities.intel.com/thread/23318
>From above and here:
http://www.mjmwired.net/kernel/Documentation/PCI/pci-iov-howto.txt
it seemed that this hardware feature requires BIOS support, and so if ur
hardware does not have it, SR-IOV is not possible, thus giving rise to
those errors u have seen.
On Sat, Apr 7, 2012 at 4:11 PM, J.Hwan Kim wrote:
> Hi, everyone
>
> I'd like to know what routine of the PCIe allocates SR-IOV BAR memory.
>
> When I put into the network card supporting SR-IOV in my system,
> it returns error indicating "MMIO resource" is insufficient when sriov
> is enabled.
>
> The routine is in iov.c
>
> for (i = 0; i < PCI_SRIOV_NUM_BARS/*6*/; i++) {
> res = dev->resource + PCI_IOV_RESOURCES + i;
> if (res->parent)
> nres++;
> }
> if (nres != iov->nres) {
> dev_err(&dev->dev, "not enough MMIO resources for SR-IOV\n");
> return -ENOMEM;
> }
>
> So, I hope to know where the resources of IOV is assigned the parent
> pointer.
>
> Thanks in advance.
>
> Best Regards,
> J.Hwan Kim
>
>
> ___
> Kernelnewbies mailing list
> Kernelnewbies@kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
--
Regards,
Peter Teoh
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SRIOV memory allocation
Hi, everyone
I'd like to know what routine of the PCIe allocates SR-IOV BAR memory.
When I put into the network card supporting SR-IOV in my system,
it returns error indicating "MMIO resource" is insufficient when sriov
is enabled.
The routine is in iov.c
for (i = 0; i < PCI_SRIOV_NUM_BARS/*6*/; i++) {
res = dev->resource + PCI_IOV_RESOURCES + i;
if (res->parent)
nres++;
}
if (nres != iov->nres) {
dev_err(&dev->dev, "not enough MMIO resources for SR-IOV\n");
return -ENOMEM;
}
So, I hope to know where the resources of IOV is assigned the parent
pointer.
Thanks in advance.
Best Regards,
J.Hwan Kim
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