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Re: [Qemu-devel] [PATCH 2/2] pc-bios/s390-ccw: zero out bss section

From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 2/2] pc-bios/s390-ccw: zero out bss section
Date: Thu, 23 Nov 2017 08:32:26 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

On 11/22/2017 03:26 PM, Christian Borntraeger wrote:
> The QEMU ELF loader does not zero the bss segment.
> This resulted in several bugs, e.g. see
> commit 5d739a4787a5 (s390-ccw.img: Fix sporadic errors with ccw boot image - 
> initialize css)
> commit 6a40fa2669d3 (s390-ccw.img: Initialize next_idx)
> commit 8775d91a0f42 (pc-bios/s390-ccw: Fix problem with invalid virtio-scsi 
> LUN when rebooting)
> Lets fix this once and forever by letting the BIOS zero the bss itself.
> Suggested-by: Alexander Graf <address@hidden>
> Signed-off-by: Christian Borntraeger <address@hidden>
> ---
>  pc-bios/s390-ccw/start.S | 30 +++++++++++++++++++++++++++---
>  1 file changed, 27 insertions(+), 3 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


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