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[Xen-devel] [PATCH]: Add support for Intel CPUID Feature mask in Xen
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH]: Add support for Intel CPUID Feature mask in Xen |
| From: | "Ke, Liping" <liping.ke@xxxxxxxxx> |
| Date: | Wed, 9 Jul 2008 14:01:15 +0800 |
| Delivery-date: | Tue, 08 Jul 2008 23:02:11 -0700 |
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| Thread-index: | AcjhiTJJ+Xm2tib1RWiPwpW4s/HSkg== |
| Thread-topic: | [Xen-devel] [PATCH]: Add support for Intel CPUID Feature mask in Xen |
Hi, all Some Latest Intel CPU models (CPUID.1.EAX >= 0x00010674) support cupid mask features. Cpuid feature mask is used to limit the feature flags reported by CPUID.1.EDX:ECX. This small patch adds CPUID feature mask support in XEN by adding boot options in Grub entry as below example: kernel /boot/xen.gz com1=115200,8n1 console=com1 cpuid_mask_ecx = 0xFFFF7FFF cpuid_mask_edx = 0xFFFFFFFC For detailed usage information, please refer to the attached document: cupid_feature_mask.txt. Thanks& Regards, Criping
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