Re: [PATCHV3 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas

[Borislav Petkov]

On Tue, Dec 15, 2015 at 05:29:59PM -0800, Tony Luck wrote:
> Extend the severity checking code to add a new context IN_KERN_RECOV
> which is used to indicate that the machine check was triggered by code
> in the kernel with a fixup entry.
> 
> Add code to check for this situation and respond by altering the return
> IP to the fixup address.
> 
> Major re-work to the tail code in do_machine_check() to make all this
> readable/maintainable. One functional change is that tolerant=3 no longer
> stops recovery actions. Revert to only skipping sending SIGBUS to the
> current process.
> 
> Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>
> ---
>  arch/x86/kernel/cpu/mcheck/mce-severity.c | 21 +++++++++-
>  arch/x86/kernel/cpu/mcheck/mce.c          | 70 ++++++++++++++++---------------
>  2 files changed, 55 insertions(+), 36 deletions(-)

Reviewed-by: Borislav Petkov <bp@xxxxxxx>

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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