Re: [Xen-devel] [PATCH 1/3] nested vmx: emulate IA32_VMX_MISC MSR

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 27.12.12 at 07:16, Dongxiao Xu <dongxiao.xu@xxxxxxxxx> wrote:
> Use the host value to emulate IA32_VMX_MISC MSR for L1 VMM.
> For CR3-target value, we don't support this feature currently and
> set the number to zero.
> 
> Signed-off-by: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
> ---
>  xen/arch/x86/hvm/vmx/vvmx.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
> index 7b27d2d..0a876b0 100644
> --- a/xen/arch/x86/hvm/vmx/vvmx.c
> +++ b/xen/arch/x86/hvm/vmx/vvmx.c
> @@ -1462,7 +1462,8 @@ int nvmx_msr_read_intercept(unsigned int msr, u64 
> *msr_content)
>          data = 0x267ff & ~X86_CR4_SMXE;
>          break;
>      case MSR_IA32_VMX_MISC:
> -        gdprintk(XENLOG_WARNING, "VMX MSR %x not fully supported yet.\n", 
> msr);
> +        /* Do not support CR3-target feature now */
> +        data = host_data & ~(0x1ff << 16);

If there isn't one already, please introduce (and use) a constant
for this mask.

Jan

>          break;
>      default:
>          r = 0;



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel