[PATCH v4 0/3] kvm: vmx: enable xsaves for kvm

[Wanpeng Li]

This patchset is to enable xsaves for kvm part and tested on skylake-client.

v3 -> v4:
 * return false from an svm_xsaves_supported function
 * prevent setting MSR_IA32_XSS to any non-zero value

v2 -> v3:
 * add kvm_get/set for ia32_xss
 * fix the type XSS_EXIT_BITMAP
 * load host_xss just once in setup_vmcs_config
 * add/clear atuo switch ia32_xss msr in kvm_get/clear
 * add VMX_XSS_EXIT_BITMAP macro
 * add WARN() in handle_xsaves/xrstors
 * export xsaves if related vmcs field is set

v1 -> v2:
 * auto switch ia32_xss msr just if this msr is present

Wanpeng Li (3):
  kvm: vmx: Intel XSAVES vmx and msr handle
  kvm: vmx: add kvm_get/set logic to xsaves
  kvm: x86: Enable Intel XSAVES for guest

 arch/x86/include/asm/kvm_host.h |  2 ++
 arch/x86/include/asm/vmx.h      |  3 +++
 arch/x86/include/uapi/asm/vmx.h |  6 ++++-
 arch/x86/kvm/cpuid.c            |  3 ++-
 arch/x86/kvm/svm.c              |  6 +++++
 arch/x86/kvm/vmx.c              | 57 ++++++++++++++++++++++++++++++++++++++++-
 6 files changed, 74 insertions(+), 3 deletions(-)

-- 
1.9.1

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