xen/acpi: revert pad config check in xen_check_mwait

Browse source

With Xen acpi pad logic added into kernel, we can now revert xen mwait related
patch df88b2d96e ("xen/enlighten: Disable
MWAIT_LEAF so that acpi-pad won't be loaded. "). The reason is, when running under
newer Xen platform, Xen pad driver would be early loaded, so native pad driver
would fail to be loaded, and hence no mwait/monitor #UD risk again.

Another point is, only Xen4.2 or later support Xen acpi pad, so we won't expose
mwait cpuid capability when running under older Xen platform.

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

...

This commit is contained in:

Liu, Jinsong 2012-11-08 05:44:28 +00:00 • committed by Konrad Rzeszutek Wilk

parent 92e3229dcd

commit e3aa4e61b5

1 changed files with 8 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

arch/x86/xen/enlighten.c

View file