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Re: [PATCH qemu v13] spapr: Implement Open Firmware client interface

From: Nicholas Piggin
Subject: Re: [PATCH qemu v13] spapr: Implement Open Firmware client interface
Date: Thu, 25 Feb 2021 20:51:45 +1000

Excerpts from Greg Kurz's message of February 23, 2021 1:01 am:
> On Mon, 22 Feb 2021 22:48:51 +1100
> Alexey Kardashevskiy <aik@ozlabs.ru> wrote:
>> Ping?
>> I need community support here :) I am hearing that having this mode 
>> helps heaps with development in fully emulated environments as this 
>> skips SLOF entirely, for example. Another rumour I am hearing is that 
>> there is interest in running grub in the userspace which this VOF thing 
>> makes handy too.
> I had tried a previous version of this : skipping SLOF is very
> beneficial to do guest work, even when running on KVM.

I agree. I do run KVM in simulators which works quite well, but
SLOF ends up being the slowest part, it's also a black box to me
so it's difficult to go about debugging or changing things.

I can't be of much more help with the code I'm sorry, except to
add my +1 for the feature and agree with Greg that the non-vof
changes seem small.


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