[Xen-devel] [PATCH] Fix incorrect usage on clear_in_cr4

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

Introduce set/clear_cr4 to modify local CR4, since *_in_cr4
version has side effect on global feature cache - mmu_cr4_features.

For example, VMX feature disable is only local to current CPU.
Another fix is to __pge_off/on which blindly copy mmu_cr4_features.

Signed-off-by Kevin Tian <kevin.tian@xxxxxxxxx>

Thanks,
Kevin

Attachment: clear_in_cr4.patch
Description: clear_in_cr4.patch

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