[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH v3 0/4] x86: enable x2APIC mode regardless of interrupt remapping support



Hello,

The following series aims to allow enabling x2APIC mode without
interrupt remapping support. The main usage of this would be in
virtualized environments, that usually provide x2APIC support but not
interrupt remapping.

See the last patch for some performance numbers of using x2APIC over
xAPIC when running Xen in pvshim mode.

Thanks, Roger.

Roger Pau Monne (4):
  x86/ioapic: only use dest32 with x2apic and interrupt remapping
    enabled
  x86/apic: force phys mode if interrupt remapping is disabled
  x86/smp: check APIC ID on AP bringup
  x86/apic: allow enabling x2APIC mode regardless of interrupt remapping

 docs/misc/xen-command-line.pandoc |  3 +-
 xen/arch/x86/apic.c               | 94 +++++++++++++++----------------
 xen/arch/x86/genapic/x2apic.c     | 18 +++++-
 xen/arch/x86/io_apic.c            | 14 ++---
 xen/arch/x86/smpboot.c            |  7 +++
 5 files changed, 78 insertions(+), 58 deletions(-)

-- 
2.24.0


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel

 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.