Hi Shannon,
On 02/09/16 03:55, Shannon Zhao wrote:
From: Shannon Zhao <shannon.z...@linaro.org>
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_v5
This branch is based on a fairly out of date xen. Do you have a branch
rebased on the latest upstream + Boris ACPI v3?
Cheers,
--
Julien Grall
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