>>> On 12.12.17 at 15:48, <Govinda.Tatti@xxxxxxxxxx> wrote: > Thanks Jan for your review comments. Please see below for my comments. First of all - can you please do something about your reply style? HTML mail should be avoided. You'll see that the (plain text) reply as a result is rather hard to follow, too. > --- a/Documentation/ABI/testing/sysfs-driver-pciback > +++ b/Documentation/ABI/testing/sysfs-driver-pciback > @@ -11,3 +11,18 @@ Description: > #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks > will allow the guest to read and write to the configuration > register 0x0E. > + > +What: /sys/bus/pci/drivers/pciback/reset > +Date: Dec 2017 > +KernelVersion: 4.15 > +Contact: xen-devel@xxxxxxxxxxxxxxxxxxxx > +Description: > + An option to perform a flr/slot/bus reset when a PCI device > + is owned by Xen PCI backend. Writing a string of DDDD:BB:DD.F > SSSS:BB:DD.F (or else the D-s are ambiguous, the more that "domain" > in Xen code is ambiguous anyway - I continue to be mislead by struct > pcistub_device_id's domain field) Thanks for catching this issue. I will > fix it. > > > Also I assume the SSSS part is optional (default zero), which > probably can and should be expressed in some way. SSSS can be 0 or > non-zero, subject to system configuration. The question isn't system configuration, but whether the field can be omitted on input, with zero being assumed in such a case. That's a common shorthand, considering that the vast majority of x86 (and maybe other) systems aren't using segments other than zero. Jan