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Re: [Qemu-devel] [PATCH v3 00/20] GICv3 emulation

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH v3 00/20] GICv3 emulation
Date: Wed, 22 Jun 2016 22:56:05 +0100

On 22 June 2016 at 22:45, Ed Maste <address@hidden> wrote:
> On 22 June 2016 at 16:53, Peter Maydell <address@hidden> wrote:
>> Yeah, it looks like the same bug is also present in UEFI itself
>> (it's super popular!). Laszlo, Ard, do you have a prebuilt
>> UEFI binary with Ard's fix?
>> Probably you'll find that if UEFI is configuring the GIC interrupt
>> groups FreeBSD will boot even without doing it itself, but I
>> think ideally FreeBSD shouldn't assume the bootloader's done
>> that job for it.
> Oh, good point. Indeed FreeBSD should not make this assumption. I'm
> not sure how I'd test the FreeBSD fix then though (booting w/o the
> UEFI firmware doing this configuration).

Mmm, tricky. I guess you could hack UEFI to only put the
interrupts it is itself using into group 1 (presumably
the timer interrupt). [I'm guessing FreeBSD doesn't
support Linux-kernel-boot-protocol, or you could use

-- PMM

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