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Date: Mon, 25 Jan 2021 22:33:15 +0300
From: Alexey Izbyshev <>
Cc: Bruno Haible <>
Subject: Re: insufficient checking in

On 2021-01-25 19:15, Rich Felker wrote:
> On Mon, Jan 25, 2021 at 05:07:36PM +0100, Bruno Haible wrote:
>> Do you know why even simple syscalls like getpid()
>> exist in the vdso only for ia64?
> In the case of getpid, because glibc does (or at least did? not sure
> if they still do) cache it themselves in the TCB, adding it to vdso
> offered no additional concrete benefit.
Glibc dropped PID caching long ago[1], and it famously regressed systemd 
at the time[2].



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