arch/x86/null_breakpoint: Remove handler before jumping to payload

If a payload did any NULL dereferencing it would be broken and jump
back to coreboot code. This fixes the SeaBIOS, FILO and possibly other
payloads too.

Fixes: 3f01cd14533f ("arch/x86: Add support for catching null
dereferences through debug regs")

TESTED on qemu/i440fx.

Change-Id: I80f69b71f4d0fab3126e4b9f8c8dc7737b372174
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64345
Reviewed-by: Robert Zieba <robertzieba@google.com>
Reviewed-by: Stefan Ott <coreboot@desire.ch>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions