Hi Julien, > On 19 Aug 2021, at 1:31 pm, Julien Grall <[email protected]> wrote: > > Hi Rahul, > > On 19/08/2021 13:02, Rahul Singh wrote: >> Add cmdline boot option "pci=on" to enable/disable the PCI init during >> boot. > > I read this as "PCI" will be either disabled/enabled for the platform. > Whereas, I think it will be used to decide whether Xen discover PCI and PCI > passthrough is supported or not.
Yes. I will modify the option to "pci-passthrough== <boolean>" > > Can you also clarify why a user would want to select "pci=off"? As pci-passthrough support emulate the PCI devices for DOM0 also, I thought if someone want to boot the DOM0 without emulating the PCI device in XEN and wants to have direct access to device. I am ok to drop this patch if you feel adding the option is not required at all. Regards, Rahul
