Re: [PATCH 4/5] x86: entry_64.S: always allocate complete "struct pt_regs"

[Oleg Nesterov]

On 08/04, Denys Vlasenko wrote:
>
> "why do we need percpu old_rsp thingy?" in particular.

See thread_struct->usersp, current_user_stack_pointer().

Oleg.

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