Hello, The following series aims to fix some shortcomings of guest interrupt handling when using passthrough devices. The first 3 patches are bugfixes, which I think should solve the issue(s) that caused the dpci EOI timer to be introduced. However neither me nor others seem to be able to reproduce the original issue, so it's hard to tell.
It's my opinion that we should remove the timer and see what explodes (if anything). That's the only way we will be able to figure out what the original issue was, and how to fix it without introducing yet another per-guest-irq related timer. Thanks, Roger. Roger Pau Monne (4): x86/vioapic: check IRR before attempting to inject interrupt after EOI x86/vioapic: issue EOI to dpci when switching pin to edge trigger mode x86/vpic: issue dpci EOI for cleared pins at ICW1 x86/dpci: remove the dpci EOI timer xen/arch/x86/hvm/vioapic.c | 13 +++- xen/arch/x86/hvm/vpic.c | 21 ++++++ xen/drivers/passthrough/vtd/x86/hvm.c | 3 - xen/drivers/passthrough/x86/hvm.c | 95 +-------------------------- xen/include/asm-x86/hvm/irq.h | 3 - xen/include/xen/iommu.h | 5 -- 6 files changed, 35 insertions(+), 105 deletions(-) -- 2.29.2
