Re: [PATCH v2 0/1] x86/kvm/hyper-v: Add support to SYNIC exit on EOM

[Jon Doron <arilou@gmail.com>]

On 07/05/2020, Jon Doron wrote:
>On 06/05/2020, Roman Kagan wrote:
>>On Wed, May 06, 2020 at 07:49:29AM +0300, Jon Doron wrote:
>>>Thanks Roman, I see your point, it's important for me to get the EDK2
>>>working properly not sure why it's not working for me.
>>
>>As I wrote a good deal of that code I hope I should be able to help (and
>>I'd be interested, too).  How exactly does the "not working" look like?
>>
>
>Basically when I built the BIOS from the hv-scsi branch you pointed me 
>out to, the BIOS did not see the virtio-blk device to boot from, I 
>usually take the BIOS from (https://www.kraxel.org/repos/) but I will 
>try to build the latest EDK2 and see if it identifies the virtio-blk 
>device and boots from it, if that's the case perhaps i just need to 
>rebase your branch over the latest master of EDK2.
>
>>Also I'm a bit confused as to why UEFI is critical for the work you're
>>doing?  Can't it be made to work with BIOS first?
>>
>
>The reason I want to have the UEFI option is because I need SecureBoot 
>to turn on VBS.
>
>>>Do you know by any chance if the EDK2 hyperv patches were submitted and if
>>>they were why they were not merged in?
>>
>>I do, as I'm probably the only one who could have submitted them :)
>>
>>No they were not submitted.  Neither were the ones for SeaBIOS nor iPXE.
>>The reason was that I had found no way to use alternative firmware with
>>HyperV, so the only environment where that would be useful and testable
>>was QEMU with VMBus.  Therefore I thought it made no sense to submit
>>them until VMBus landed in QEMU.
>>
>>Thanks,
>>Roman.
>
>Heh I see, well I'm really happy that you are here helping so we can 
>try and finally add VMBus to QEMU, I realize it's a big effort but I'm 
>willing to spend the time and do the required changes...
>
>I'm working this only during my free time so things takes me longer 
>than usual (sorry for that..)
>
>I will keep update on results once I get to test with latest EDK2 :)
>
>Thanks,
>-- Jon.

Hi, just wanted to update you I did some stupid mistake when I did the 
UEFI setup test (that's why I could not boot my Win10).

I suggest we will abandon this patch, and try to keep going on the QEMU 
VMBus patchset.

And perhaps submit a very basic patch to SeaBIOS and EDK2 which just 
enable SCONTROL.

Does that sound like a good plan to you?

Thanks,
-- Jon.