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Re: [qemu-s390x] [PATCH] s390-bios: Skip bootmap signature entries

From: Peter Oberparleiter
Subject: Re: [qemu-s390x] [PATCH] s390-bios: Skip bootmap signature entries
Date: Tue, 30 Apr 2019 11:24:27 +0200

On 29.04.2019 15:45, Christian Borntraeger wrote:
> On 29.04.19 15:40, Cornelia Huck wrote:
>> On Mon, 29 Apr 2019 09:09:41 -0400
>> "Jason J. Herne" <address@hidden> wrote:
>>> Newer versions of zipl have the ability to write signature entries to the 
>>> boot
>>> script for secure boot. We don't yet support secure boot, but we need to 
>>> skip
>>> over signature entries while reading the boot script in order to maintain 
>>> our
>>> ability to boot guest operating systems that have a secure bootloader.
>>> Signed-off-by: Jason J. Herne <address@hidden>
>>> Reviewed-by: Farhan Ali <address@hidden>
>>> ---
>>>  pc-bios/s390-ccw/bootmap.c | 19 +++++++++++++++++--
>>>  pc-bios/s390-ccw/bootmap.h | 10 ++++++----
>>>  2 files changed, 23 insertions(+), 6 deletions(-)
>> Skipping something that we don't have support for yet, but that doesn't
>> hinder normal operation sounds reasonable; but can you point me to the
>> relevant commit implementing this in zipl or some documentation? I
>> haven't been able to find something like that in the s390-tools git
>> tree.
> the s390-tools update is currently in preparation, adding Stefan and Peter.

Here's the link to the s390-tools commit that introduces the new
signature component to zipl:


Peter Oberparleiter
Linux on Z Development - IBM Germany

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