[vfio-users] VM doesn't book with kernel 4.2.3-1-vfio

Wed Oct 21 04:54:22 UTC 2015

It appears it may have been blind luck that I got anything to boot at 
all. Seems all the work required for the fix is not done yet...:

https://www.mail-archive.com/kvm@vger.kernel.org/msg121381.html

On 10/20/2015 03:03 PM, globalgorrilla at fastmail.fm wrote:
> Sry, short reference should be 529a5a8:
>
> https://github.com/tianocore/edk2/commit/529a5a860996b5e83941bab50a7b8604139264a1
>
>
> I'm also using qemu 2.4.0.1.
>
> I'm seeing high CPU load on boot the (TianoCore/EDK/OVMF bit) but
> eventually things settle down once Windows is running.
>
> Thanks to Janusz and others who have driven and are driving the issue
> with the EDK team.
>
> On 20 Oct 2015, at 10:05, francesco dicarlo wrote:
>
>> can you link the commit on github? can't seem to find it...
>>
>> 2015-10-20 18:49 GMT+02:00 <globalgorrilla at fastmail.fm>:
>>
>>> I'm now able to boot my VM again with OVMF and 4.3.0-rc6. I think
>>> this is
>>> the fix for OVMF:
>>>
>>> edk2 git commit 39264a1
>>> ...
>>>   1) Swap PTE init order for QEMU compatibility.
>>>      Current PTE initialization algorithm works on HW but breaks QEMU
>>>      emulator.  Update the PTE initialization order to be compatible
>>>      with both.
>>> ...
>>>
>>> I haven't yet discovered if any MTRR fixes went into 4.3.0-rc6 for
>>> this to
>>> happen or if this fixes for 4.2 as well.
>>>
>>>
>>> On 19 Oct 2015, at 23:53, Okky Hendriansyah wrote:
>>>
>>> Yes, the maintainer made the LTS version because of the issue on the
>>> 4.2.x
>>>> kernel.
>>>>
>>>> --
>>>> Okky Hendriansyah
>>>>
>>>> On October 20, 2015 at 13:50:58, Alexander Petrenz
>>>> (petrenz.a at gmail.com)
>>>> wrote:
>>>>
>>>> Oh there is an lts version? Thanks! I wasn´t aware of that.
>>>>
>>>> Regards
>>>> Alex
>>>>
>>>> On Tue, Oct 20, 2015 at 8:39 AM, Okky Hendriansyah
>>>> <okky at nostratech.com>
>>>> wrote:
>>>> Hi,
>>>>
>>>> The GLib warning is because of the upgrade on GLib which makes existing
>>>> QEMU throw this warning. I remove the warning by applying the patch
>>>> from
>>>> https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg04438.html
>>>>
>>>> You might want to try linux-vfio-lts, the package maintainer of
>>>> linux-vfio made an LTS version which is based on 4.1.10 kernel (
>>>> https://aur.archlinux.org/packages/linux-vfio-lts/).
>>>>
>>>> Thanks.
>>>> --
>>>> Okky Hendriansyah
>>>>
>>>> On October 20, 2015 at 13:19:47, Alexander Petrenz
>>>> (petrenz.a at gmail.com)
>>>> wrote:
>>>>
>>>> Since I´m unable to fix this issue and there doesn´t seem to be much
>>>> information about it... is there an archive where I can get an older
>>>> pkgbuild for a 4.1 vfio kernel?
>>>>
>>>> Regards
>>>> Alex
>>>>
>>>> On Sun, Oct 18, 2015 at 10:45 PM, Alexander Petrenz
>>>> <petrenz.a at gmail.com>
>>>> wrote:
>>>> OK I got rid of the GLib-Warning, but the KVM error is still there.
>>>>
>>>> On Sun, Oct 18, 2015 at 10:14 PM, Alexander Petrenz
>>>> <petrenz.a at gmail.com>
>>>> wrote:
>>>> Thanks for the Hint. I try the short patch vor OVMF
>>>>
>>>> On Sun, Oct 18, 2015 at 10:06 PM, Janusz <januszmk6 at gmail.com> wrote:
>>>> W dniu 18.10.2015 o 21:18, Alexander Petrenz pisze:
>>>>
>>>>> Hi,
>>>>>
>>>>> yesterday I compiled the recent version of the vfio kernel version in
>>>>> AUR. Now my VM doesn't start at all.
>>>>> I'm getting a reproducable error message
>>>>> (http://pastebin.com/YsNBX4Yj)
>>>>> There are no other messages in dmesg, but those I posted yesterday.
>>>>> Same goes for hardware configuration
>>>>> According to lsmod the KVM module is loaded.
>>>>>
>>>>> Is there some configuration I need to change?
>>>>>
>>>>> Regards
>>>>> Alex
>>>>>
>>>>> Are you using OVMF?
>>>> I don't know if this is the same because you also getting
>>>> "(process:3267): GLib-WARNING **: gmem.c:482: custom memory allocation
>>>> vtable not supported" but there is a known bug in ovmf, since kernel
>>>> 4.2
>>>> because of changes in kvm, you wont be able to start properly VM with
>>>> more than one core,
>>>> http://www.mail-archive.com/kvm@vger.kernel.org/msg121088.html
>>>>
>>>>
>>>>
>>>>
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>>>
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>
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