Kaige Fu 29b7aff59f HV: Use NMI-window exiting to address req missing issue ...

There is a window where we may miss the current request in the
notification period when the work flow is as the following:

      CPUx +                   + CPUr
           |                   |
           |                   +--+
           |                   |  | Handle pending req
           |                   <--+
           +--+                |
           |  | Set req flag   |
           <--+                |
           +------------------>---+
           |     Send NMI      |  | Handle NMI
           |                   <--+
           |                   |
           |                   |
           |                   +--> vCPU enter
           |                   |
           +                   +

So, this patch enables the NMI-window exiting to trigger the next vmexit
once there is no "virtual-NMI blocking" after vCPU enter into VMX non-root
mode. Then we can process the pending request on time.

Tracked-On: #3886
Acked-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Kaige Fu <kaige.fu@intel.com>

2019-12-16 16:54:30 +08:00

..

arch/x86

HV: Use NMI-window exiting to address req missing issue

2019-12-16 16:54:30 +08:00

common

HV: Use NMI to kick lapic-pt vCPU's thread

2019-12-16 16:54:30 +08:00

debug

HV: Kconfig: remove MAX_VCPUS_PER_VM in Kconfig

2019-12-12 13:49:28 +08:00

dm

HV: rename CONFIG_MAX_PCPU_NUM to MAX_PCPU_NUM

2019-12-12 13:49:28 +08:00

hw

…

lib

…

public

…