Re: Memory zeroed when made available to user process

From: Richard Weinberger
Date: Wed Jun 27 2018 - 07:29:11 EST


On Wed, Jun 27, 2018 at 11:34 AM, Jefferson Carpenter
<jeffersoncarpenter2@xxxxxxxxx> wrote:
> Is there a way for a user process to mark memory as 'sensitive' or
> 'non-sensitive' when it is allocated? That could allow it not to have to be
> zeroed before being allocated to another process.

Isn't this what we have Meltdown and Spectre for? ;-)

No, memory from the kernel is always zeroed.
libc offers malloc() and calloc() for this purpose.

--
Thanks,
//richard