Re: [Xen-devel] [PATCH] Xen PCIbackend support for slot and bus reset (v3).

Sander Eikelenboom
2014-07-08T19:15:48Z

Tuesday, July 8, 2014, 8:58:22 PM, you wrote:

> These patches had been posted in the past and had been reworked
> to address reviews. The original concerns with the patches was
> the complex logic of doing an workqueue (or thread) that would
> do the FLR/bus/slot reset outside the PCI lock. That idea proved
> buggy. The other idea of usurping the 'reset' SysFS didn't work
> either - as the the generic code will complain loudly about this.

> The best so far mechanism is to use the 'xl' toolstack usage
> of 'do_flr' and make that work in Xen pciback.

> Documentation/ABI/testing/sysfs-driver-pciback | 95 ++++++++++++++
> drivers/xen/xen-pciback/pci_stub.c | 163 +++++++++++++++++++-----
> drivers/xen/xen-pciback/xenbus.c | 2 +-
> 3 files changed, 224 insertions(+), 36 deletions(-)

> Konrad Rzeszutek Wilk (7):
> xen-pciback: Document the various parameters and attributes in SysFS
> xen/pciback: Don't deadlock when unbinding.
> xen/pciback: Move the FLR code to a function.
> xen/pciback: Implement PCI reset slot or bus with 'do_flr' SysFS attribute
> xen/pciback: Include the domain id if removing the device whilst still in use
> xen/pciback: Print out the domain owning the device.
> xen/pciback: Remove tons of dereferences

Could you push these to your kernel.org git tree ?

--
Sander