Re: [PATCH v2 01/12] kexec: Allow architecture code to opt-out at runtime

Borislav Petkov
2021-11-01T16:10:46Z

On Mon, Sep 13, 2021 at 05:55:52PM +0200, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@suse.de>
>
> Allow a runtime opt-out of kexec support for architecture code in case
> the kernel is running in an environment where kexec is not properly
> supported yet.
>
> This will be used on x86 when the kernel is running as an SEV-ES
> guest. SEV-ES guests need special handling for kexec to hand over all
> CPUs to the new kernel. This requires special hypervisor support and
> handling code in the guest which is not yet implemented.
>
> Cc: stable@vger.kernel.org # v5.10+
> Signed-off-by: Joerg Roedel <jroedel@suse.de>
> ---
> include/linux/kexec.h | 1 +
> kernel/kexec.c | 14 ++++++++++++++
> kernel/kexec_file.c | 9 +++++++++
> 3 files changed, 24 insertions(+)

I guess I can take this through the tip tree along with the next one.

Eric?

--
Regards/Gruss,
Boris.