Fix various breakages with INTX/GSI event channel interrupt delivery,
and add a command line option to test it so that it hopefully doesn't
get so broken again.
Karim attempted to rip this out in 2017 but put it back because it's still
necessary with older versions of Xen. This fixes it properly, and makes it
easier to test. cf. https://lkml.org/lkml/2017/4/10/266
v2:
• Add no_vector_callback to Documentation/admin-guide/kernel-parameters.txt
• Further fixes to conditional smp_ops initialisation in xen_hvm_smp_init()
v3:
• Rename test option to xen_no_vector_callback
David Woodhouse (5):
xen: Fix event channel callback via INTX/GSI
xen: Set platform PCI device INTX affinity to CPU0
x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery
x86/xen: Don't register Xen IPIs when they aren't going to be used
x86/xen: Fix xen_hvm_smp_init() when vector callback not available
Documentation/admin-guide/kernel-parameters.txt | 4 ++
arch/arm/xen/enlighten.c | 2 +-
arch/x86/xen/enlighten_hvm.c | 15 ++++--
arch/x86/xen/smp_hvm.c | 27 ++++++----
drivers/xen/events/events_base.c | 10 ----
drivers/xen/platform-pci.c | 8 ++-
drivers/xen/xenbus/xenbus.h | 1 +
drivers/xen/xenbus/xenbus_comms.c | 8 ---
drivers/xen/xenbus/xenbus_probe.c | 68 ++++++++++++++++++++-----
include/xen/xenbus.h | 2 +-
10 files changed, 97 insertions(+), 48 deletions(-)
and add a command line option to test it so that it hopefully doesn't
get so broken again.
Karim attempted to rip this out in 2017 but put it back because it's still
necessary with older versions of Xen. This fixes it properly, and makes it
easier to test. cf. https://lkml.org/lkml/2017/4/10/266
v2:
• Add no_vector_callback to Documentation/admin-guide/kernel-parameters.txt
• Further fixes to conditional smp_ops initialisation in xen_hvm_smp_init()
v3:
• Rename test option to xen_no_vector_callback
David Woodhouse (5):
xen: Fix event channel callback via INTX/GSI
xen: Set platform PCI device INTX affinity to CPU0
x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery
x86/xen: Don't register Xen IPIs when they aren't going to be used
x86/xen: Fix xen_hvm_smp_init() when vector callback not available
Documentation/admin-guide/kernel-parameters.txt | 4 ++
arch/arm/xen/enlighten.c | 2 +-
arch/x86/xen/enlighten_hvm.c | 15 ++++--
arch/x86/xen/smp_hvm.c | 27 ++++++----
drivers/xen/events/events_base.c | 10 ----
drivers/xen/platform-pci.c | 8 ++-
drivers/xen/xenbus/xenbus.h | 1 +
drivers/xen/xenbus/xenbus_comms.c | 8 ---
drivers/xen/xenbus/xenbus_probe.c | 68 ++++++++++++++++++++-----
include/xen/xenbus.h | 2 +-
10 files changed, 97 insertions(+), 48 deletions(-)