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Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_c
From: |
Laszlo Ersek |
Subject: |
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients |
Date: |
Mon, 29 Apr 2013 15:21:38 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 |
On 04/29/13 14:39, Kevin O'Connor wrote:
> On Mon, Apr 29, 2013 at 11:20:15AM +0300, Michael S. Tsirkin wrote:
>> in particular, seabios wants to interpret presence
>> of any file in etc/acpi as a signal not to generate
>> its own tables.
>
> Right.
In that case,
>> So merging this patch but without the config option will break
>> this plan. The only two ways I see are:
>> - merge this last patch with the config option, disabled by default
>> the idea being we can improve it in-tree, gradually.
>> - keep this patch out of tree until we have a complete
>> set of tables.
>>
>> Both are fine with me.
>
> Why? As long as QEMU places the new tables under new fwcfg entries,
> old seabios will totally ignore the new tables. I don't see why a
> QEMU config option is needed - it's safe for QEMU to always create
> both old and new fwcfg entries.
the new-style fw_cfg entry for the MADT (= "etc/acpi/APIC") would
prevent the generation of all other (yet unexported by qemu) ACPI tables
in *new* seabios.
[SeaBIOS] [PATCH RFC 2/3] acpi: load and link tables from /etc/acpi/
<http://thread.gmane.org/gmane.comp.emulators.qemu/208457/focus=208458>
Thanks,
Laszlo
- Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients, (continued)
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients, Anthony Liguori, 2013/04/25
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients, Laszlo Ersek, 2013/04/26
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients, Michael S. Tsirkin, 2013/04/29
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients, Kevin O'Connor, 2013/04/29
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients,
Laszlo Ersek <=
Re: [Qemu-devel] [PATCH v4 7/7] hw/i386: build ACPI MADT (APIC) for fw_cfg clients, Michael S. Tsirkin, 2013/04/29
Re: [Qemu-devel] [PATCH v4 0/7] publish etc/acpi/APIC in fw_cfg, Laszlo Ersek, 2013/04/24