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Re: [qemu-s390x] [RFC 00/15] s390: vfio-ccw dasd ipl support

From: Jason J. Herne
Subject: Re: [qemu-s390x] [RFC 00/15] s390: vfio-ccw dasd ipl support
Date: Tue, 21 Aug 2018 15:31:55 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 08/15/2018 07:48 AM, Cornelia Huck wrote:
On Thu,  5 Jul 2018 13:25:28 -0400
"Jason J. Herne" <address@hidden> wrote:

This is to support booting from vfio-ccw dasd devices. We basically implement
the real hardware ipl procedure. This allows for booting Linux guests on
vfio-ccw devices.

vfio-ccw's channel program prefetch algorithm complicates ipl because most ipl
channel programs dynamically modify themselves. Details on the ipl process and
how we worked around this issue can be found in docs/devel/s390-dasd-ipl.txt.

Cleaning up my mail backlog... I think there were some comments; will
there be a new version forthcoming?

Yes there will. We're hitting a hang now and not sure if it is a device, configuration or coding problem. Once I get that cleared up I'll be back for round #2.

-- Jason J. Herne (address@hidden)

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