linux-kernel - Re: [PATCH PING 0/2] scripts/gdb/symbols: make lx-symbols skip the s390 decompressor

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Message-ID: <8c112fd80ba37a1f05e0899afd4daa0bda7d6066.camel@linux.ibm.com>
Date: Wed, 09 Jul 2025 11:27:01 +0200
From: Ilya Leoshkevich <iii@...ux.ibm.com>
To: Jan Kiszka <jan.kiszka@...mens.com>, Kieran Bingham <kbingham@...nel.org>
Cc: linux-kernel@...r.kernel.org, Heiko Carstens <hca@...ux.ibm.com>,
        Vasily
 Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Subject: Re: [PATCH PING 0/2] scripts/gdb/symbols: make lx-symbols skip the
 s390 decompressor

On Wed, 2025-06-25 at 17:36 +0200, Ilya Leoshkevich wrote:
> Hi,
> 
> In order to debug the early s390 kernel boot, one has to skip the
> decompressor code, which requires some private scripts or memorized
> commands. This series makes it work out of the box with the lx-
> symbols
> command.
> 
> Patch 1 adds helper infrastructure to the s390 decompressor code; it
> is
> already acked by Heiko.
> 
> Patch 2 is the implementation; it would be great to have an Ack from
> one of the GDB scripts maintainers.
> 
> We would like to get this series via the s390 tree, if possible.
> 
> Best regards,
> Ilya
> 
> Ilya Leoshkevich (2):
>   s390/boot: Introduce jump_to_kernel() function
>   scripts/gdb/symbols: make lx-symbols skip the s390 decompressor
> 
>  arch/s390/boot/Makefile      |  2 +-
>  arch/s390/boot/boot.h        |  1 +
>  arch/s390/boot/ipl_data.c    |  9 ++++++++-
>  arch/s390/boot/startup.c     |  2 +-
>  arch/s390/boot/trampoline.S  |  9 +++++++++
>  scripts/gdb/linux/symbols.py | 26 ++++++++++++++++++++++++++
>  6 files changed, 46 insertions(+), 3 deletions(-)
>  create mode 100644 arch/s390/boot/trampoline.S

Gentle ping. Any feedback would be greatly appreciated.