>>> On 16.11.18 at 15:57, <roger....@citrix.com> wrote: > On Fri, Nov 16, 2018 at 05:11:39AM -0700, Jan Beulich wrote: >> >>> On 14.11.18 at 12:57, <roger....@citrix.com> wrote: >> > @@ -182,6 +185,7 @@ static void defer_map(struct domain *d, struct pci_dev >> > *pdev, >> > curr->vpci.mem = mem; >> > curr->vpci.cmd = cmd; >> > curr->vpci.rom_only = rom_only; >> > + raise_softirq(SCHEDULE_SOFTIRQ); >> > } >> >> Why is this needed? The description doesn't mention it. > > vPCI needs to raise a shceduler softirq in order to prevent the guest > from resuming execution after deferring a map/unmap operation. Without > this the guest might just resume execution while having pending work > if there's no scheduler softirq already pending.
Ah yes, but please again attach a brief comment to clarify this. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
