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authorLiu, Jinsong <jinsong.liu@intel.com>2012-11-08 05:44:28 +0000
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-11-26 15:08:29 -0500
commite3aa4e61b57da7574fdd1b4c9ca9bdee06a4d23e (patch)
treef298215d0d626cd47de7c22ed15b33da1ee54a9c /README
parent92e3229dcdc80ff0b6304f14c578d76e7e10e226 (diff)
downloadlinux-e3aa4e61b57da7574fdd1b4c9ca9bdee06a4d23e.tar.gz
xen/acpi: revert pad config check in xen_check_mwait
With Xen acpi pad logic added into kernel, we can now revert xen mwait related
patch df88b2d96e36d9a9e325bfcd12eb45671cbbc937 ("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>
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