[PATCHv5 21/37] x86/vdso: Restrict splitting VVAR VMA

[Andy Lutomirski]

On Mon, Jul 29, 2019 at 2:58 PM Dmitry Safonov <dima at arista.com> wrote:
>
> Although, time namespace can work with VVAR VMA split, it seems worth
> to forbid splitting VVAR resulting in stricter ABI and reducing amount
> of corner-cases to consider while working further on VDSO.
>
> I don't think there is any use-case for partial mremap() of vvar,
> but if there is any - this patch can be easily reverted.

Seems reasonable to me.