Re: [Qemu-devel] [PATCH v4 00/23] ACPI reorganization for hardware-reduced support

[Samuel Ortiz]

Hi Andrew,

On Mon, Nov 05, 2018 at 05:07:53PM +0100, Andrew Jones wrote:
> > > QEMU already has hw reduced implementation, specifically in arm/virt board
> > Back in May, I tried booting a virt machine type with "acpi=force" with
> > no success, and today's HEAD still fails. With "acpi=on":
> > 
> > [    0.000000] ACPI: Early table checksum verification disabled
> > [    0.000000] ACPI: Failed to init ACPI tables
> > 
> > So this code has been broken for several months and I suspect it's not
> > really run by anyone.
> 
> Hi Samuel,
> 
> We use it all the time. To see if there had been an upstream regression I
> just tried latest qemu (v3.0.0-1763-gb2f7a038bb4c) with a latest kernel
> (v4.20-rc1) in my guest. It worked just fine, and there was no need for
> any kernel command line parameters.
> 
> What guest kernel version did you try?
This is my bad, apologies for jumping the gun. I was not using the right
pflash options and thus the ACPI tables were simply not passed to the
kernel. Philippe and Eric helped me fix that, and now I can boot
arm/virt on top of ACPI. Sorry for the bad noise.

Cheers,
Samuel.