On Wed, Sep 19, 2012 at 3:46 PM, Ben Hutchings
<bhutchings@xxxxxxxxxxxxxx> wrote:
> On Wed, 2012-09-19 at 15:17 -0700, Yinghai Lu wrote:
>> +max_vfs_store(struct device *dev, struct device_attribute *attr,
>> + const char *buf, size_t count)
>> +{
>> + unsigned long val;
>> + struct pci_dev *pdev = to_pci_dev(dev);
>> +
>> + if (strict_strtoul(buf, 0, &val) < 0)
>> + return -EINVAL;
>> +
>> + pdev->max_vfs = val;
>> +
>> + return count;
>> +}
> [...]
>
> Then what would actually trigger creation of the VFs? There's no way we
> can assume that some sysfs attribute will be written before the PF
> driver is loaded (what if it's built-in?). I thought the idea was to
> add a driver callback that would be called when the sysfs attribute was
> written.
could just stop the device and add it back again?
just like updated patch.
Thanks
Yinghai
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