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From: | Christian Borntraeger |
Subject: | Re: [Qemu-devel] [PATCH v3 2/3] pc-bios/s390-ccw/net: Use diag308 to reset machine before jumping to the OS |
Date: | Wed, 25 Apr 2018 14:18:59 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
On 04/25/2018 11:08 AM, Thomas Huth wrote: > --- a/pc-bios/s390-ccw/netmain.c > +++ b/pc-bios/s390-ccw/netmain.c > @@ -283,6 +283,15 @@ void panic(const char *string) > } > } > > +void write_subsystem_identification(void) > +{ > + uint32_t *schid = (uint32_t *) 184; > + uint32_t *zeroes = (uint32_t *) 188; > + > + *schid = 0; /* We must not set this for virtio-net */ > + *zeroes = 0; > +} > + I think we actually want to have the CCW devno of that network device stored. It has some value to know which CCW device we bootet from, no?
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