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

[Andrew Jones]

On Wed, Jun 15, 2016 at 04:53:35PM +0800, Shannon Zhao wrote:
> 
> 
> On 2016/6/14 22:38, Peter Maydell wrote:
> > This series implements emulation of the GICv3 interrupt controller.
> > It is based to some extent on previous patches from Shlomo and
> > Pavel, but the bulk of it has turned out to be new code. (The
> > combination of changing the underlying data structures, adding
> > support for TrustZone and implementing proper GICv3 behaviour rather
> > than borrowing fragments of GICv2 emulation code meant there wasn't
> > much left to reuse.) I've tried to reflect this in the various
> > authorship credits on the patches, but please let me know if you
> > feel I got anything miscredited one way or the other.
> > 
> > Key points about the GICv3 emulated here:
> >  * "non-legacy" only, ie system registers and affinity routing
> >  * TrustZone is implemented
> >  * no virtualization support
> >  * only the "core" GICv3, so no LPI support (via ITS or otherwise)
> >  * no attempt to work around the Linux guest kernel bug fixed
> >    in commit 7c9b973061b0 (so you need that fix for your guest to
> >    boot with this GICv3)
> Hi Peter,
> 
> I have another test with a freebsd guest. When I specify gic-version=3
> at the QEMU command line, the guest can't start. But with gic-version=2
> it's fine. And if I use gic-version=3 with kvm, the guest boots well too.
> 
> It hangs with below log:
> [Bds]=============Begin Load Options Dumping ...=============
>   Driver Options:
>   SysPrep Options:
>   Boot Options:
>     Boot0000: UiApp              0x0109
>     Boot0001: EFI Internal Shell                 0x0001
>     Boot0002: UEFI Misc Device           0x0001
>     Boot0003: UEFI Misc Device 2                 0x0001
>     Boot0004: UEFI Misc Device 3                 0x0001
>     Boot0005: UEFI PXEv4 (MAC:525400123456)              0x0001
>   PlatformRecovery Options:
>     PlatformRecovery0000: Default PlatformRecovery               0x0001
> [Bds]=============End Load Options Dumping=============
> [Bds]BdsWait ...Zzzzzzzzzzzz...
> [Bds]BdsWait(3)..Zzzz...

I can reproduce this exact output with the latest version of AAVMF,
built on commit 988715a.

Shannon,

What UEFI did you use when you tested it and it worked?

(CC'ing Laszlo)

Thanks,
drew

> 
> 
> The QEMU command line is:
> qemu-system-aarch64 \
> -m 4096M -cpu cortex-a57 -M virt,gic-version=3 -smp 1 \
> -bios QEMU_EFI.fd -serial telnet::4445,server -nographic \
> -drive
> if=none,file=FreeBSD-11.0-ALPHA3-arm64-aarch64-20160528-r301815.qcow2,id=hd0
> \
> -device virtio-blk-device,drive=hd0 \
> -device virtio-net-device,netdev=net0 \
> -netdev user,id=net0
> 
> The QEMU_EFI.fd is built on edk2 commit ID 8f88f02 and the disk Image
> file is downloaded from
> http://www2.tw.freebsd.org/FreeBSD/snapshots/VM-IMAGES/11.0-ALPHA3/aarch64/20160528/FreeBSD-11.0-ALPHA3-arm64-aarch64-20160528-r301815.qcow2.xz
> 
> Thanks,
> -- 
> Shannon
> 
>