Re: [RFC PATCH v2 04/32] KVM: SVM: Add SEV feature definitions to KVM

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Mar 02, 2017 at 10:12:48AM -0500, Brijesh Singh wrote:
> From: Tom Lendacky <thomas.lendacky@xxxxxxx>
> 
> Define a new KVM CPU feature for Secure Encrypted Virtualization (SEV).
> The kernel will check for the presence of this feature to determine if
> it is running with SEV active.
> 
> Define the SEV enable bit for the VMCB control structure. The hypervisor
> will use this bit to enable SEV in the guest.
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
> ---
>  arch/x86/include/asm/svm.h           |    1 +
>  arch/x86/include/uapi/asm/kvm_para.h |    1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
> index 2aca535..fba2a7b 100644
> --- a/arch/x86/include/asm/svm.h
> +++ b/arch/x86/include/asm/svm.h
> @@ -137,6 +137,7 @@ struct __attribute__ ((__packed__)) vmcb_control_area {
>  #define SVM_VM_CR_SVM_DIS_MASK  0x0010ULL
>  
>  #define SVM_NESTED_CTL_NP_ENABLE	BIT(0)
> +#define SVM_NESTED_CTL_SEV_ENABLE	BIT(1)
>  
>  struct __attribute__ ((__packed__)) vmcb_seg {
>  	u16 selector;
> diff --git a/arch/x86/include/uapi/asm/kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h
> index 1421a65..bc2802f 100644
> --- a/arch/x86/include/uapi/asm/kvm_para.h
> +++ b/arch/x86/include/uapi/asm/kvm_para.h
> @@ -24,6 +24,7 @@
>  #define KVM_FEATURE_STEAL_TIME		5
>  #define KVM_FEATURE_PV_EOI		6
>  #define KVM_FEATURE_PV_UNHALT		7
> +#define KVM_FEATURE_SEV			8

This looks like it needs documenting in Documentation/virtual/kvm/cpuid.txt

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
-- 
--
To unsubscribe from this list: send the line "unsubscribe linux-efi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux