Re: [Xen-devel] [PATCH v4 00/16] Xen ARM DomU ACPI support

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Aug 16, 2016 at 06:24:57PM +0800, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> 
> The design of this feature is described as below.
> Firstly, the toolstack (libxl) generates the ACPI tables according the
> number of vcpus and gic controller.
> 
> Then, it copies these ACPI tables to DomU non-RAM memory map space and
> passes them to UEFI firmware through the "ARM multiboot" protocol.
> 
> At last, UEFI gets the ACPI tables through the "ARM multiboot" protocol
> and installs these tables like the usual way and passes both ACPI and DT
> information to the Xen DomU.
> 
> Currently libxl only generates RSDP, XSDT, GTDT, MADT, FADT, DSDT tables
> since it's enough now.
> 
> This has been tested using guest kernel with the Dom0 ACPI support
> patches which could be fetched from linux master or:
> https://git.kernel.org/cgit/linux/kernel/git/mfleming/efi.git/log/?h=efi/arm-xen
> 
> The UEFI binary could be fetched from or built from edk2 master branch:
> http://people.linaro.org/~shannon.zhao/DomU_ACPI/XEN_EFI.fd
> 
> This series can be fetched from:
> https://git.linaro.org/people/shannon.zhao/xen.git  domu_acpi_v4
> 

Thanks for posting this version and sorry for the late review.

I've skimmed the whole series and pointed out things I think should be
improved. I will leave reviewing all the table building code to ARM
maintainers.

Wei.

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