Re: [PATCH v2 2/3] KVM: VMX: validate individual bits of guest MSR_IA32_FEATURE_CONTROL

[Paolo Bonzini]

On 16/06/2016 08:05, Haozhong Zhang wrote:
> +	/*
> +	 * Only bits masked by msr_ia32_feature_control_valid_bits can be set in
> +	 * msr_ia32_feature_control.
> +	 *
> +	 * msr_ia32_feature_control_valid_bits should be modified by
> +	 * feature_control_valid_bits_add/del(), and only bits masked by
> +	 * FEATURE_CONTROL_MAX_VALID_BITS can be modified.
> +	 */
>  	u64 msr_ia32_feature_control;
> +	u64 msr_ia32_feature_control_valid_bits;

I noticed that the fw_cfg patch used an uint32_t.  It probably should
use uint64_t; what you did here is correct.

Paolo

>  };