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From: Peter Maydell <peter.maydell@linaro.org>
Date: Thu, 9 Apr 2015 17:03:15 +0100
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Subject: Re: [Qemu-devel] [PATCH v4 10/20] hw/arm/virt-acpi-build: Generate
 RSDT table
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To: Laszlo Ersek <lersek@redhat.com>
Cc: hangaohuai@huawei.com, "Michael S. Tsirkin" <mst@redhat.com>, Alexander Spyridakis <a.spyridakis@virtualopensystems.com>, Shannon Zhao <zhaoshenglong@huawei.com>, Claudio Fontana <claudio.fontana@huawei.com>, QEMU Developers <qemu-devel@nongnu.org>, "Huangpeng (Peter)" <peter.huangpeng@huawei.com>, Paolo Bonzini <pbonzini@redhat.com>, Hanjun Guo <hanjun.guo@linaro.org>, Mark Salter <msalter@redhat.com>, Igor Mammedov <imammedo@redhat.com>, =?UTF-8?B?QWxleCBCZW5uw6ll?= <alex.bennee@linaro.org>, Christoffer Dall <christoffer.dall@linaro.org>, Shannon Zhao <shannon.zhao@linaro.org>

On 9 April 2015 at 17:00, Laszlo Ersek <lersek@redhat.com> wrote:
> On 04/09/15 15:59, Peter Maydell wrote:
>> On 9 April 2015 at 14:51, Igor Mammedov <imammedo@redhat.com> wrote:
>>> On Thu, 9 Apr 2015 14:27:58 +0100
>>> Peter Maydell <peter.maydell@linaro.org> wrote:
>>>
>>>> On 9 April 2015 at 14:17, Igor Mammedov <imammedo@redhat.com> wrote:
>>>>> On Thu, 09 Apr 2015 13:50:52 +0100
>>>>> Alex Benn=C3=A9e <alex.bennee@linaro.org> wrote:
>>>>>
>>>>>>
>>>>>> Shannon Zhao <zhaoshenglong@huawei.com> writes:
>>>>>>> +    for (i =3D 0; i < table_offsets->len; ++i) {
>>>>>>> +        /* rsdt->table_offset_entry to be filled by Guest linker *=
/
>>>>>>> +        bios_linker_loader_add_pointer(linker,
>>>>>>> +                                       ACPI_BUILD_TABLE_FILE,
>>>>>>> +                                       ACPI_BUILD_TABLE_FILE,
>>>>>>> +                                       table_data, &rsdt->table_of=
fset_entry[i],
>>>>>>> +                                       sizeof(uint32_t));
>>>>>>
>>>>>> Why are these pointers always 32 bit? Can they ever be 64 bit?
>>>>> Laszlo, can you confirm that UEFI puts APCI tables below 4G address
>>>>> space?
>
> I confirmed that before, in the v2 discussion:
>
> http://thread.gmane.org/gmane.comp.emulators.qemu/316670/focus=3D317560
>
> But in fact the RSDT / XSDT that QEMU exports for UEFI doesn't matter.

If this table is never used, presumably we should just
not generate it at all, then?

-- PMM