[illumos-Discuss] recent sunos kernels has big problem with qemu's e1000 driver

[dpecka]

On Thu, 2010-09-16 at 14:09 +0200, Milan Jurik wrote:
> Hi,
> 
> V Thu, 16 Sep 2010 13:42:14 +0200
> dpecka <dpecka at techniservit.cz> napsáno:
> 
> > On Wed, 2010-09-15 at 08:31 -0700, Garrett D'Amore wrote:
> > > Actually, usually the emulation doesn't emulate the full hardware,
> > > just enough to make the typical OS drivers work with it.  In some
> > > cases, the behaviors are very fragile, depending on specific
> > > initialization sequences, such that when the driver does them
> > > differently (perhaps on a different OS), the emulation fails to
> > > work.
> > > 
> > > 	-- Garrett
> > 
> > well, in short (i discussed this with qemu/kvm guys):
> > 
> > 1) sunos guys say that problem is in driver emulation .. ok, right
> > 2) qemu guys say **YOU FIX (cuz you have strange implementation)
> > 
> 
> Do they say what Solaris e1000g driver is doing wrong? To be fair, it
> works on real HW (and e.g. in VMware and VirtualBox) and they are
> emulation of HW.... Yes, it can be bug in Solaris driver, of course.
> But if I am doing emulation of some HW, I am trying to emulate it
> accurately.

my bad, i badly described it. they just say, that we're those who have
to provide info (find out what went wrong) and of course possibly fix ..
which sounds reasonable

> 
> > there is no way out from this .. so i'd like to fix .. it has only one
> > problem .. i am unable to dig out from mdb or whatever i should use
> > what's happening bad in sunos kernel with loaded e1000 driver ..
> > 
> > logs don't contain any clue, everything seems just fine ..
> > 
> > i'll very appreciate any hint or link to docs which would tell me,
> > what to be looking for in there ..
> > 
> 
> You will need to look at Solaris e1000g driver source code and trying to
> catch if some receiving function fails. For "how it works" look at
> "Writing device drivers" docu.
> 

i've rather meant, that i'm still unable to dig out from mdb what wrong
in there. but ok, i'll spend some time with it, just to be honest i
worked on this only hour or two already.

> Best regards,
> 
> Milan
> 
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ave, daniel

-- 
Best Regards / S Pozdravem

Daniel Pecka
--------------------------------------------------
SunOS Specialist, UNIX Administrator

www.techniservit.cz

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