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[Xen-devel] [PATCH] cpuid handling for guest

Hi Keir, Ian,

   Attached is a patch to provide right view of cpuid to the HVM guests. Some of the CPU features such as APIC, PAE, MTRR, HT are virtualized; while others are not virtualized yet such as TM1, TM2, MCA and there are some features which do not need virtualization such as MMX. With the patch Guest sees only those processor features in the cpuid which are virtualized in the hyper visor, or do not need any virtualization in hyper visor.


diffstat cpuid_13.patch

 arch/x86/hvm/hvm.c            |    2

 arch/x86/hvm/vmx/vmx.c        |   96 +++++++++++++++++++++++++-----------------

 include/asm-x86/cpufeature.h  |    3 -

 include/asm-x86/hvm/domain.h  |    1

 include/asm-x86/hvm/vmx/cpu.h |   17 +++++++

 5 files changed, 81 insertions(+), 38 deletions(-)


Signed-Off-By: Nitin A Kamble <nitin.a.kamble@xxxxxxxxx>

Signed-Off-By: Jun Nakajima <jun.nakajima@xxxxxxxxx>

Signed-Off-By: Asit Mallick <asit.k.mallick@xxxxxxxxx>


Thanks & Regards,



Open Source Technology Center, Intel Corp


Attachment: cpuid_13.patch
Description: cpuid_13.patch

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