Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Christian Borntraeger
Anthony, this is the prototype of the IPL device that we have talked about some weeks ago. Is an external device to do the IPL process for s390 still ok with you? Even with an external IPL, we should still be able to detect that a guest provides its own virtio-zipl code that contains a

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Alexander Graf
On 08.05.2012, at 16:43, Christian Borntraeger wrote: Anthony, this is the prototype of the IPL device that we have talked about some weeks ago. Is an external device to do the IPL process for s390 still ok with you? Even with an external IPL, we should still be able to detect that a

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Christian Borntraeger
Well, the only shortcomings I'm aware of of the external IPL are: * You lose the boot menu. All you get is entry 0, entry 1, etc. as the description is not part of the boot map * You can't choose different entries during runtime. Doing a reboot of a VM and selecting a different entry

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Anthony Liguori
On 05/08/2012 07:32 AM, Christian Borntraeger wrote: On 04/05/12 20:12, Alexander Graf wrote: On 04.05.2012, at 16:02, Christian Borntraeger wrote: On 04/05/12 16:00, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Alexander Graf
On 08.05.2012, at 20:54, Christian Borntraeger wrote: Well, the only shortcomings I'm aware of of the external IPL are: * You lose the boot menu. All you get is entry 0, entry 1, etc. as the description is not part of the boot map * You can't choose different entries during runtime.

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Christian Borntraeger
On 04/05/12 20:12, Alexander Graf wrote: On 04.05.2012, at 16:02, Christian Borntraeger wrote: On 04/05/12 16:00, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this scheme as an qemu device that also allows to configure

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-08 Thread Alexander Graf
On 08.05.2012, at 14:32, Christian Borntraeger wrote: On 04/05/12 20:12, Alexander Graf wrote: On 04.05.2012, at 16:02, Christian Borntraeger wrote: On 04/05/12 16:00, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement

[Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-04 Thread Christian Borntraeger
An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this scheme as an qemu device that also allows to configure the IPL like the HMC. We have a parameter iplid that refers to a disk device and a load parm that specifies the entry on the disk to be ipled. We also

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-04 Thread Alexander Graf
On 04.05.2012, at 15:44, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this scheme as an qemu device that also allows to configure the IPL like the HMC. We have a parameter iplid that refers to a disk device and a load

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-04 Thread Christian Borntraeger
On 04/05/12 15:53, Alexander Graf wrote: On 04.05.2012, at 15:44, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this scheme as an qemu device that also allows to configure the IPL like the HMC. We have a parameter iplid

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-04 Thread Christian Borntraeger
On 04/05/12 16:00, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this scheme as an qemu device that also allows to configure the IPL like the HMC. We have a parameter iplid that refers to a disk device and a load parm that

Re: [Qemu-devel] [PATCH 1/1] s390: IPL device for s390

2012-05-04 Thread Alexander Graf
On 04.05.2012, at 16:02, Christian Borntraeger wrote: On 04/05/12 16:00, Christian Borntraeger wrote: An IPL (booting) on s390 of SCSI disks is done by a firmware component. Lets implement this scheme as an qemu device that also allows to configure the IPL like the HMC. We have a parameter