Re: [PATCH v3 1/6] x86/hyper-v: move struct hv_flush_pcpu{,ex} definitions to common header

[Radim KrÄmÃÅ]

2018-04-16 13:08+0200, Vitaly Kuznetsov:
> Hyper-V TLB flush hypercalls definitions will be required for KVM so move
> them hyperv-tlfs.h. Structures also need to be renamed as '_pcpu' suffix is
> invalid for a general-purpose definition.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> ---
>  arch/x86/hyperv/mmu.c              | 40 ++++++++++----------------------------
>  arch/x86/include/asm/hyperv-tlfs.h | 20 +++++++++++++++++++
>  2 files changed, 30 insertions(+), 30 deletions(-)
> 
> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
> @@ -703,4 +703,24 @@ struct hv_enlightened_vmcs {
>  #define HV_STIMER_AUTOENABLE		(1ULL << 3)
>  #define HV_STIMER_SINT(config)		(__u8)(((config) >> 16) & 0x0F)
>  
> +/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
> +struct hv_tlb_flush {
> +	u64 address_space;
> +	u64 flags;
> +	u64 processor_mask;
> +	u64 gva_list[];
> +};
> +
> +/* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
> +struct hv_tlb_flush_ex {
> +	u64 address_space;
> +	u64 flags;
> +	struct {
> +		u64 format;
> +		u64 valid_bank_mask;
> +		u64 bank_contents[];
> +	} hv_vp_set;
> +	u64 gva_list[];

Why is the gva_list there?