Re: [Xen-devel] [PATCH v10 04/11] public: xen.h: add definitions for UUID handling

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Oct 11, 2017 at 02:57:59PM +0300, Volodymyr Babchuk wrote:
> Added type xen_uuid_t. This type represents UUID as an array of 16
> bytes in big endian format.
> 
> Added macro XEN_DEFINE_UUID that constructs UUID in the usual way:
> 
>  XEN_DEFINE_UUID(0x00112233, 0x4455, 0x6677, 0x8899,
>               0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff)
> 
> will construct UUID 00112233-4455-6677-8899-aabbccddeeff presented as
>  {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
>   0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}
> 
> NB: We define a new structure here rather than re-using EFI_GUID.
> EFI_GUID uses a Microsoft-style encoding which, among other things,
> mixes little-endian and big-endian. The structure defined in this
> patch, unlike EFI_GUID, is compatible with the Linux kernel and libuuid.
> 
> Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>

Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

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