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[Xen-devel] [PATCH] Fix incorrect usage on clear_in_cr4
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] Fix incorrect usage on clear_in_cr4 |
| From: | "Tian, Kevin" <kevin.tian@xxxxxxxxx> |
| Date: | Thu, 12 Jul 2007 13:51:46 +0800 |
| Delivery-date: | Wed, 11 Jul 2007 22:49:38 -0700 |
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| Thread-index: | AcfESLsqtc4Q5BNKTvOzqLW318zvFg== |
| Thread-topic: | [PATCH] Fix incorrect usage on clear_in_cr4 |
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
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