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Re: [PATCH] s390-bios: Skip writing iplb location to low core for ccw ip
Re: [PATCH] s390-bios: Skip writing iplb location to low core for ccw ipl
Wed, 4 Nov 2020 13:22:23 +0100
On Fri, 30 Oct 2020 13:28:23 +0100
Christian Borntraeger <firstname.lastname@example.org> wrote:
> From: "Jason J. Herne" <email@example.com>
> The architecture states that the iplb location is only written to low
> core for list directed ipl and not for traditional ccw ipl. If we don't
> skip this then operating systems that load by reading into low core
> memory may fail to start.
> We should also not write the iplb pointer for network boot as it might
> overwrite content that we got via network.
> Signed-off-by: Jason J. Herne <firstname.lastname@example.org>
> Fixes: 9bfc04f9ef68 ("pc-bios: s390x: Save iplb location in lowcore")
> Signed-off-by: Christian Borntraeger <email@example.com>
> pc-bios/s390-ccw/main.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
Thanks, queued (together with a rebuild) to s390-fixes.