Searched hist:"13 b5bd8a" (Results 1 – 1 of 1) sorted by relevance
/openbmc/linux/arch/s390/boot/ |
H A D | head.S | 13b5bd8a Tue Oct 13 09:19:37 CDT 2020 Vasily Gorbik <gor@linux.ibm.com> s390/head: set io/ext handlers to disabled wait
Set io/ext handlers to disabled wait in the initial lowcore, so that they are effective right from the kernel start, when a boot method used does not rewrite this part of the lowcore for its own needs (i.e. kexec, z/vm ipl reader boot, qemu direct boot, load from removable media or server).
When the kernel is loaded by zipl, scsi loader or qemu loader, some or all of the io/ext/pgm handlers addresses might be rewritten. Rewrite them to initial values again as early as possible.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|