* [Qemu-devel] [Question] Question about ACPI table in qemu
@ 2018-09-11 16:54 Li Qiang
2018-09-11 17:24 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Li Qiang @ 2018-09-11 16:54 UTC (permalink / raw)
To: Paolo Bonzini, mst, Laszlo Ersek, kevin; +Cc: Qemu Developers
Hi all,
I noticed that both qemu and seabios create the ACPI table.
Once I think he bios' ACPI table will overwrite the qemu's if seabios
compiled with CONFIG_ACPI.
But after I read this -->
https://lists.gnu.org/archive/html/qemu-devel/2013-02/msg04555.html
There say:
"just have QEMU pass the tables to SeaBIOS for it to copy
>>> into memory like it does on CSM, coreboot, and Xen"
So where does this 'copy' happens? or is there something others I missed?
Thanks,
Li Qiang
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] [Question] Question about ACPI table in qemu
2018-09-11 16:54 [Qemu-devel] [Question] Question about ACPI table in qemu Li Qiang
@ 2018-09-11 17:24 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2018-09-11 17:24 UTC (permalink / raw)
To: Li Qiang, mst, Laszlo Ersek, kevin; +Cc: Qemu Developers
On 11/09/2018 18:54, Li Qiang wrote:
> Hi all,
>
> I noticed that both qemu and seabios create the ACPI table.
> Once I think he bios' ACPI table will overwrite the qemu's if seabios
> compiled with CONFIG_ACPI.
Yes, SeaBIOS's ACPI tables are not used anymore, to remove the need to
update QEMU and SeaBIOS in sync.
> But after I read this -->
> https://lists.gnu.org/archive/html/qemu-devel/2013-02/msg04555.html
>
> There say:
>
> "just have QEMU pass the tables to SeaBIOS for it to copy
>>>> into memory like it does on CSM, coreboot, and Xen"
>
> So where does this 'copy' happens? or is there something others I missed?
The copy happens in SeaBIOS's romfile_loader_execute function (called by
qemu_platform_setup).
Thanks,
Paolo
^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-09-11 16:54 [Qemu-devel] [Question] Question about ACPI table in qemu Li Qiang
2018-09-11 17:24 ` Paolo Bonzini
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