linux-kernel - Re: [RFC 06/14] fork: zero vmap stack using clear

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Message-ID: <CA+CK2bCdqMzvFyfOqk1ZMeuZA1a_UaPtsKSeVWVvqE-n=gBkDA@mail.gmail.com>
Date: Sun, 17 Mar 2024 11:15:06 -0400
From: Pasha Tatashin <pasha.tatashin@...een.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>
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Subject: Re: [RFC 06/14] fork: zero vmap stack using clear_page() instead of memset()

On Sun, Mar 17, 2024 at 10:48 AM Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> Le 11/03/2024 à 17:46, Pasha Tatashin a écrit :
> > In preporation for dynamic kernel stacks do not zero the whole span of
>
> Nit: preparation

Thank you,
Pasha

>
> > the stack, but instead only the pages that are part of the vm_area.
> >
> > This is because with dynamic stacks we might have only partially
> > populated stacks.
> >
> > Signed-off-by: Pasha Tatashin <pasha.tatashin@...een.com>
> > ---
> >   kernel/fork.c | 6 ++++--
> >   1 file changed, 4 insertions(+), 2 deletions(-)
>
> ...
>