[lkml]   [2018]   [Dec]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRE: [PATCH v1 0/2] Virtio: fix some vq allocation issues
On Friday, December 28, 2018 3:57 PM, Christian Borntraeger wrote:
> On 28.12.2018 03:26, Wei Wang wrote:
> > Some vqs don't need to be allocated when the related feature bits are
> > disabled. Callers notice the vq allocation layer by setting the
> > related names[i] to be NULL.
> >
> > This patch series fixes the find_vqs implementations to handle this case.
> So the random crashes during boot are gone.
> What still does not work is actually using the balloon.
> So in the qemu monitor using lets say "balloon 1000" will hang the guest.
> Seems to be a deadlock in the virtio-ccw code. We seem to call the config
> code in the interrupt handler.

Yes. It reads a config register from the interrupt handler. Do you know why ccw doesn't support it and has some internal lock that caused the deadlock issue?

 \ /
  Last update: 2018-12-29 03:46    [W:0.155 / U:6.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site