[Xen-devel] [PATCH v2 0/3] A few VPMU/watchdog-related patches

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

Changes in v2:
* Added NMI cleanup patch
* Disaple VPMU in vpmu_initialise() instead of doing it in options parsing 
routines
* Update documentation by mentioning that VPMU doesn't work with watchdog
* Drop some sign-off area tags


The first patch is a light cleanup of nmi_watchdog usage. (I removed
NMI_INVALID definition but left NMI_IO_APIC. Do we actually need it? I
don't see anyone using it except for one place, which doesn't really
use it neither)

The second patch is to disable VPMU when watchdog is on since both are using
APIC_LVTPC register and VPMU, when running, will overwrite watchdog's settings.

The last patch is update to the earlier (reverted) commit 8097616. We prevent
guests's updates to APIC_LVTPC when VPMU is disabled. Without this a guest may
redirect a watchdog interrupt to VPMU which will not be able to handle it.

Boris Ostrovsky (3):
  x86/nmi: Cleanup usage of nmi_watchdog
  x86/VPMU: Disable VPMU when NMI watchdog is on
  x86/VPMU: Handle APIC_LVTPC accesses

 docs/misc/xen-command-line.markdown |  2 ++
 xen/arch/x86/hvm/svm/vpmu.c         |  4 ----
 xen/arch/x86/hvm/vlapic.c           |  3 +++
 xen/arch/x86/hvm/vmx/vpmu_core2.c   | 17 -----------------
 xen/arch/x86/hvm/vpmu.c             | 21 +++++++++++++++++++++
 xen/arch/x86/nmi.c                  |  6 +++---
 xen/arch/x86/traps.c                |  3 ++-
 xen/include/asm-x86/apic.h          |  1 -
 xen/include/asm-x86/hvm/vpmu.h      |  1 +
 9 files changed, 32 insertions(+), 26 deletions(-)

-- 
1.8.1.4


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