Hi, Julien! On 03.12.21 18:10, Durrant, Paul wrote: > On 23/11/2021 23:59, Oleksandr Andrushchenko wrote: >> From: Oleksandr Andrushchenko <oleksandr_andrushche...@epam.com> >> >> vPCI may map and unmap PCI device memory (BARs) being passed through which >> may take a lot of time. For this those operations may be deferred to be >> performed later, so that they can be safely preempted. >> >> Currently this deferred processing is happening in common IOREQ code >> which doesn't seem to be the right place for x86 and is even more >> doubtful because IOREQ may not be enabled for Arm at all. >> So, for Arm the pending vPCI work may have no chance to be executed >> if the processing is left as is in the common IOREQ code only. >> For that reason make vPCI processing happen in arch specific code. >> >> Please be aware that there are a few outstanding TODOs affecting this >> code path, see xen/drivers/vpci/header.c:map_range and >> xen/drivers/vpci/header.c:vpci_process_pending. >> >> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushche...@epam.com> >> [x86 part] >> Acked-by: Jan Beulich <jbeul...@suse.com> >> Reviewed-by: Julien Grall <jgr...@amazon.com> > > Reviewed-by: Paul Durrant <p...@xen.org> > Do we need anything else for this patch?
Thank you, Oleksandr
