Re: [win-pv-devel] [Xen-users] windows pv drivers 8.1 series INACCESSIBLE_BOOT_DEVICE windows 10

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

[dropping xen-users]

Yes, win-pv-devel is the appropriate forum for this...

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> Sent: 26 February 2016 15:42
> To: Éliás Tamás
> Cc: xen-users@xxxxxxxxxxxxx; Wei Liu; Paul Durrant
> Subject: Re: [Xen-users] windows pv drivers 8.1 series
> INACCESSIBLE_BOOT_DEVICE windows 10
> 
> CC Paul
> 
> I think the right channel would be win-pv-devel@ lists.xenproject.org.
> 
> Wei.
> 
> On Wed, Feb 24, 2016 at 11:02:53AM +0100, Éliás Tamás wrote:
> > All.
> >
> > I was succesfully using 8.2 series drivers for a while in a debian dom0
> > with 64bit windows 10 pvh guests, until the first "Service pack" for
> > windows 10, - which keep turning off testsigning after upgrade -
> > arrived. This prevents the os to boot with the xen drivers (solution
> > is/was not to install the upgrade package, which is quite hard to
> > achieve winth windows 10). The long awaited signed drivers are not
> > released yet, and based on previous discussions only 8.1 series will be
> > signed (as they are considered to be stable).

That's the intention. I am still awaiting permission from the Linux Foundation 
to sign the 8.1 drivers and will do so as soon as I have clearance.

> >
> > So I decided to downgrade my installations to use 8.1 series drivers. I
> > removed 8.2 series (from installed programs, and from the device tree)
> > and installed 8.1 series (pfx certs also installed).
> >
> > Unfortunately with 8.1 series I'm keep getting
> INACCESSIBLE_BOOT_DEVICE
> > even with TESTSIGNONG on. I have to boot into safe mode, remove 8.1
> > series, install 8.2 series, and bang, it is working again.
> >
> > So I must assume, that there is generally wrong with the 8.1 series drivers.
> >

I don't think there is anything fundamentally wrong with the drivers. At Citrix 
we are heavily testing our branded driver build, including with Windows 10, in 
all sorts of upgrade scenarios and have not hit any major problems. But... 
Citrix drivers are signed.

Also, I have tested the unbranded 8.1 drivers quite recently in a Windows 10 VM 
with test-signing on and not had any problem. I will re-try with a fully 
updated OS though just in case Microsoft has introduced some breakage I'm 
unaware of.

> > Anyone has any idea how to use the 8.1 series drivers in this situation
> > (I belive once the drivers will be signed will not solve this problem)?
> >
> > Are there any fundamental differences between 8.1 and 8.2 series which
> > would require me to change the domu configuration?

No. There's very little different between them at this stage. 8.2 (since it's 
the unstable version) will start to diverge but it's early days.

  Paul

> >
> > Thank you.
> >
> > --
> >
> >
> > Éliás Tamás
> > Thomas Elias
> >
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> 
> 
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