Re: [PATCH 18/43] x86/entry/64: Move the IST stacks into cpu_entry_area

[Borislav Petkov]

On Fri, Nov 24, 2017 at 06:23:46PM +0100, Ingo Molnar wrote:
> From: Andy Lutomirski <luto@xxxxxxxxxx>
> 
> The IST stacks are needed when an IST exception occurs and are
> accessed before any kernel code at all runs.  Move them into
> cpu_entry_area.
> 
> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Borislav Petkov <bpetkov@xxxxxxx>
> Cc: Brian Gerst <brgerst@xxxxxxxxx>
> Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
> Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Link: https://lkml.kernel.org/r/0ffddccdc0ce1953f950a553142662cf68258fb7.1511497875.git.luto@xxxxxxxxxx
> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
> ---
>  arch/x86/include/asm/fixmap.h | 10 ++++++++++
>  arch/x86/kernel/cpu/common.c  | 40 +++++++++++++++++++++++++---------------
>  2 files changed, 35 insertions(+), 15 deletions(-)

Reviewed-by: Borislav Petkov <bp@xxxxxxx>

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.