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Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter |
Date: |
Tue, 24 Nov 2009 19:56:10 +0100 |
On 24.11.2009, at 19:53, Anthony Liguori wrote:
> Alexander Graf wrote:
>> The default bootloader on S390 is zipl. Because we don't emulate normal S390
>> hardware we need to write our own parser for the bootloader configuration,
>> so we can boot off real hard disks.
>>
>> This patch adds a pretty simple implementation of such an interpreter. It
>> only
>> supports 512 bytes sector sizes, always boots the default entry and doesn't
>> work with reboots yet. But it's better than nothing.
>>
>
> This is a bit unfortunate. Wouldn't it be better to write a custom version
> of zipl that ran in the guest?
Yeah, I've been struggling quite a bit with this myself. Writing a custom
version that runs in the guest means we have to create
1) extboot
2) input backdoor
Or implement virtio in that custom version. That sounds like a pretty huge
project.
So I decided to go for the easy way for now and hopefully migrate to an
in-guest version later.
Alex
- [Qemu-devel] [PATCH 08/13] Add S390x virtio machine description, (continued)
- [Qemu-devel] [PATCH 08/13] Add S390x virtio machine description, Alexander Graf, 2009/11/24
- [Qemu-devel] [PATCH 13/13] Add S390 maintainer information, Alexander Graf, 2009/11/24
- [Qemu-devel] [PATCH 11/13] Set default console to virtio on S390x, Alexander Graf, 2009/11/24
- [Qemu-devel] [PATCH 04/13] Add KVM support for S390x, Alexander Graf, 2009/11/24
- [Qemu-devel] [PATCH 02/13] S/390 host/target build system support, Alexander Graf, 2009/11/24
- [Qemu-devel] [PATCH 06/13] Add support for S390x system emulation, Alexander Graf, 2009/11/24
- [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Alexander Graf, 2009/11/24
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Anthony Liguori, 2009/11/24
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter,
Alexander Graf <=
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Anthony Liguori, 2009/11/24
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Alexander Graf, 2009/11/24
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Mark Williamson, 2009/11/24
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Anthony Liguori, 2009/11/24
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Hannes Reinecke, 2009/11/25
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Alexander Graf, 2009/11/25
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Carsten Otte, 2009/11/25
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Carsten Otte, 2009/11/25
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Carsten Otte, 2009/11/25
- Re: [Qemu-devel] [PATCH 12/13] Add zipl bootloader interpreter, Carsten Otte, 2009/11/25