lkml.org 
[lkml]   [2020]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3 5/6] powerpc/fsl_booke/64: clear the original kernel if randomized
From
Date


Le 06/02/2020 à 03:58, Jason Yan a écrit :
> The original kernel still exists in the memory, clear it now.

No such problem with PPC32 ? Or is that common ?

Christophe

>
> Signed-off-by: Jason Yan <yanaijie@huawei.com>
> Cc: Scott Wood <oss@buserror.net>
> Cc: Diana Craciun <diana.craciun@nxp.com>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Christophe Leroy <christophe.leroy@c-s.fr>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Nicholas Piggin <npiggin@gmail.com>
> Cc: Kees Cook <keescook@chromium.org>
> ---
> arch/powerpc/mm/nohash/kaslr_booke.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
> index c6f5c1db1394..ed1277059368 100644
> --- a/arch/powerpc/mm/nohash/kaslr_booke.c
> +++ b/arch/powerpc/mm/nohash/kaslr_booke.c
> @@ -378,8 +378,10 @@ notrace void __init kaslr_early_init(void *dt_ptr, phys_addr_t size)
> unsigned int *__kaslr_offset = (unsigned int *)(KERNELBASE + 0x58);
> unsigned int *__run_at_load = (unsigned int *)(KERNELBASE + 0x5c);
>
> - if (*__run_at_load == 1)
> + if (*__run_at_load == 1) {
> + kaslr_late_init();
> return;
> + }
>
> /* Setup flat device-tree pointer */
> initial_boot_params = dt_ptr;
>

\
 
 \ /
  Last update: 2020-02-20 14:49    [W:0.343 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site