Re: [PATCH v6 0/3] Add a kernel parameter to change the padding size for KASLR

From: Masayoshi Mizuma
Date: Wed Oct 03 2018 - 07:00:53 EST


On Wed, Oct 03, 2018 at 08:52:19AM +0200, Ingo Molnar wrote:
>
> * Masayoshi Mizuma <msys.mizuma@xxxxxxxxx> wrote:
>
> > This patch series are adding an kernel parameter to change
> > the padding size used for KASLR. It is useful for memory hotplug
> > capable system. User can adjust the padding size to use it.
> >
> > It is better if the padding size is calculated automatically,
> > however, ACPI SRAT is not available at the KASLR initialization
> > time. So, I add a message for user to tell the suitable padding
> > size. User can set it on next reboot.
> >
> > This patch series don't change the current default padding size.
> >
> > Change log from v5:
> > - Fix build error if CONFIG_RANDOMIZE_MEMORY is not defined.
>
> Please send a delta patch on top of tip:x86/boot with the get_rand_mem_physical_padding() fix,
> when doing that you'll see that I did some minor cleanups when applying the patches which your
> v6 series undoes.

I have sent the delta patch. Thanks!

- Masa