On 2016/5/3 14:11, Tian, Kevin wrote:
From: Yongji Xie [mailto:xyj...@linux.vnet.ibm.com]
Sent: Tuesday, May 03, 2016 1:52 PM
+
+ if (!(res->start & ~PAGE_MASK)) {
+ /*
+* Add shadow resource for sub-page bar whose mmio
+
> From: Yongji Xie [mailto:xyj...@linux.vnet.ibm.com]
> Sent: Tuesday, May 03, 2016 1:52 PM
>
> >> +
> >> + if (!(res->start & ~PAGE_MASK)) {
> >> + /*
> >> + * Add shadow resource for sub-page bar whose mmio
> >> + * page is exclusive
On 2016/5/3 10:59, Tian, Kevin wrote:
From: Yongji Xie
Sent: Wednesday, April 27, 2016 8:22 PM
Current vfio-pci implementation disallows to mmap
sub-page(size < PAGE_SIZE) MMIO BARs because these BARs' mmio
page may be shared with other BARs. This will cause some
performance issues when we pass
> From: Yongji Xie
> Sent: Wednesday, April 27, 2016 8:22 PM
>
> Current vfio-pci implementation disallows to mmap
> sub-page(size < PAGE_SIZE) MMIO BARs because these BARs' mmio
> page may be shared with other BARs. This will cause some
> performance issues when we passthrough a PCI device with
>
