Re: [Xen-devel] xen-4.3 port

[Igor Kozhukhov <ikozhukhov@xxxxxxxxx>]

On Jan 28, 2014, at 11:34 PM, Konrad Rzeszutek Wilk wrote:

> On Tue, Jan 28, 2014 at 11:21:34PM +0400, Igor Kozhukhov wrote:
>> Hello All,
>> 
>> i'm working on port xen-4.3 to DilOS (illumos based platform).
>> 
>> i have problems with PV guest load.
>> dom0 started, i can see info by 'xl info'.
>> 
>> first: i see platform ID=38, but i couldn't found it in xen/public/platform.h
>> 
>> Jan 28 01:16:44 myhost privcmd: == HYPERVISOR_platform_op 38
>> Jan 28 01:16:44 myhost privcmd: unrecognized HYPERVISOR_platform_op 38
>> 
>> could you please let me know - what is it the 38 platform hypercall ?
> 
> tmem_op

tmem_op defined at xen/public/xen.h, but 38 ID not defined at 
xen/public/platform.h

>> 
>> next problem: i try to create a new PV guest by 'xm create dilos.cfg'
>> i see on dom0 logs requests to hypercall ID=38 - i see it is 
>> __HYPERVISOR_tmem_op
> 
> You sure it is dom0? Not the guest?
yes - it is in dom0 log.

> 
>> 
>> do i need implement it first ?
> 
> No. But you should have stub functions in your hypercall page to at least
> return -ENOSYS for everything you don't implement.

based on current code i see:
return -X_EINVAL;
will it be correct to return it if ID not implemented ?


> How do you construct your hyperpage?
>> 

example here : 
https://github.com/illumos/illumos-gate/blob/master/usr/src/uts/i86xpv/io/privcmd_hcall.c

from line: 379


>> i have error with :
>> root@myhost:/xen# xm create dilos.cfg 
>> Using config file "./dilos.cfg".
>> Error: (1, 'Internal error', 'panic: xc_dom_boot.c:197: 
>> xc_dom_boot_domU_map: failed to mmap domU pages 0x0+0x826 [mmap, errno=6 (No 
>> such device or address)]')
>> 
>> could you please let me know - how to identify by Xen sources - what i need 
>> implement/fix on my dom0 sources ? 
>> 
>> maybe - how to get more debug info ?
>> i have output from Xen to serial console and i can get statistic, but have 
>> no more information about problem with PV guest creation.
>> 
>> --
>> Best regards,
>> Igor Kozhukhov
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxx
>> http://lists.xen.org/xen-devel


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