RE: [Qemu-devel] ACPI support

[Yu, Ke]

This is an interesting topic, however, not an easy task :) 

The patch is for APIC support, and only contains one ACPI MADT entry, which is 
far from full ACPI support. So you may like to call it an APIC patch rather 
than ACPI patch. 

If you want to test power management of embedded system with qemu, IMHO, there 
will be a lot of work to do:
* Implement ACPI hardware in QEMU, which includes
   - General ACPI hardware in chipset
  -  Specific ACPI hardware in every device
* Add ACPI table in BIOS. 

Best Regards
Yu Ke
----------------
Intel Opensource Technology Center

________________________________________
From: address@hidden [mailto:address@hidden On Behalf Of Shahar Livne
Sent: 2005年11月9日 1:40
To: address@hidden
Subject: [Qemu-devel] ACPI support

Hi there,

I use qemu for development of embedded systems. Lately I had a need to check 
ACPI related kernel module, but I have seen that there isn't any support in the 
version 0.7.1 that I use.
I have checked also 0.7.2 and found no support.
A patch that I have found on www.h7.dion.ne.jp/~qemu-win/ for x86_64 by 
F.Navara seemed like close enough. 
I have applied it (after adaptation, since it didn't go smooth for 0.7.1 or 
0.7.2).

The system booted, but running dmesg | grep ACPI inside the embedded system on 
the qemu gave:

ACPI: RSDP (v000 QEMU                                                  ) @ 
0x000e0000
ACPI: Invalid RSDT checksum
ACPI: Subsystem revision 20050211
ACPI: Interpreter disabled.

I use the i386 emulation, and the kernel running inside is 2.6.11

Has someone any experience with ACPI in qemu?

Thanks,

Shahar Livne
LivneX - Open Source Development and Services
http://livnex.com