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Re: [Qemu-devel] [RFC PATCH v2 09/11] hw/arm/virt-acpi-build: Generate X
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From: |
Shannon Zhao |
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Subject: |
Re: [Qemu-devel] [RFC PATCH v2 09/11] hw/arm/virt-acpi-build: Generate XSDT table |
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Date: |
Sat, 7 Feb 2015 10:04:32 +0800 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
On 2015/2/4 0:51, Laszlo Ersek wrote:
> On 02/03/15 17:19, Igor Mammedov wrote:
>> On Thu, 29 Jan 2015 16:37:11 +0800
>> Shannon Zhao <address@hidden> wrote:
>>
>>> XDST points to other tables except FACS & DSDT.
>> Is there any reason to use XSDT instead of RSDT?
>> If ACPI tables are below 4Gb which probably would
>> be the case then RSDT could be used just fine and
>> we could share more code between x86 and ARM.
>>
>> Laszlo,
>> Do you know if OVMF allocates memory below 4G address range?
>
> Yes, it does.
>
> https://github.com/tianocore/edk2/blob/master/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c#L162
>
> RSDT should suffice.
>
Ok, will rethink about this.
--
Thanks,
Shannon