On 2014-12-08 04:49, Wincy Van wrote:
>>>> +static bool vmx_msr_switch_area_verify(u32 count, u64 addr, int maxphyaddr)
>>>> +{
>>>> + if (count == 0)
>>>> + return true;
>>>> + if ((addr & 0xf) != 0)
>>
>> Bits 11:0 have to be zero, in fact (page alignment required).
>
>
> Why? According to SDM(24.8.2), "If the VM-entry MSR-load count is not zero,
> the address must be 16-byte aligned."
True, sorry, confused with the MSR usage bitmap.
>
> I think the macro IS_ALIGNED would be better.
Yes.
Jan
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