ACK: [PULL][SRU Xenial] Support QEMU guests in ACPI mode

[Kleber Souza]

On 02/02/18 00:00, dann frazier wrote:
> BugLink: https://bugs.launchpad.net/bugs/1744754
> 
> qemu-efi, the UEFI firmware used to boot arm64 KVM guests, has
> switched from devicetree to ACPI by default. However, the GA xenial
> kernel didn't have enough ACPI support to boot in this mode. That
> means, for example, that your bionic-based OpenStack won't be able to
> boot xenial cloud images. This series backports the minimum necessary
> ACPI support back to 4.4: GICv3 and SPCR console detection.
> 
> The testing/risk assessment is all there in the bug, as is a
> discussion of other possible solutions. The GICv3 support comprises
> all clean cherry-picks. Some backporting was required for the console
> stuff - I've annotated each patch with the details in each patch above
> my S-o-b.
> 
> Test builds are available in ppa:dannf/test.
> 
> The following changes since commit 355335ee775c4016a34b22e99e14cf5bc9534c1b:
> 
>   UBUNTU: [Packaging] update urgency to medium by default (2018-01-29
> 13:09:24 +0100)
> 
> are available in the Git repository at:
> 
>   git://git.launchpad.net/~dannf/ubuntu/+source/linux/+git/linux minacpi-x
> 
> for you to fetch changes up to eb0e0630ae2860f70f017a1b11ee356d736edf9e:
> 
>   serial: pl011: add console matching function (2018-01-31 16:12:16 -0700)
> 
> ----------------------------------------------------------------
> Aleksey Makarov (4):
>       ACPICA: Headers: Add new constants for the DBG2 ACPI table
>       ACPI: parse SPCR and enable matching console
>       ARM64: ACPI: enable ACPI_SPCR_TABLE
>       serial: pl011: add console matching function
> 
> Hanjun Guo (1):
>       irqchip/gic-v3: Remove gic_root_node variable from the ITS code
> 
> Leif Lindholm (1):
>       of/serial: move earlycon early_param handling to serial
> 
> Tomasz Nowicki (4):
>       irqchip/gic-v3: Refactor gic_of_init() for GICv3 driver
>       irqchip/gic-v3: Add ACPI support for GICv3/4 initialization
>       irqchip/gic-v3: ACPI: Add redistributor support via GICC structures
>       irqchip/gic-v3-its: Mark its_init() and its children as __init
> 
> dann frazier (1):
>       UBUNTU: [Config] CONFIG_ACPI_SPCR_TABLE=y
> 
>  arch/arm64/Kconfig                        |   1 +
>  arch/arm64/kernel/acpi.c                  |  11 +-
>  debian.master/config/config.common.ubuntu |   1 +
>  drivers/acpi/Kconfig                      |   3 +
>  drivers/acpi/Makefile                     |   1 +
>  drivers/acpi/spcr.c                       | 111 ++++++++++
>  drivers/irqchip/irq-gic-v3-its.c          |  10 +-
>  drivers/irqchip/irq-gic-v3.c              | 347 +++++++++++++++++++++++++-----
>  drivers/of/fdt.c                          |  11 +-
>  drivers/tty/serial/amba-pl011.c           |  55 +++++
>  drivers/tty/serial/earlycon.c             |  20 +-
>  include/acpi/actbl2.h                     |   7 +-
>  include/linux/acpi.h                      |   6 +
>  include/linux/of_fdt.h                    |   3 +
>  include/linux/serial_core.h               |   9 +-
>  15 files changed, 527 insertions(+), 69 deletions(-)
>  create mode 100644 drivers/acpi/spcr.c
> 

The changes seem to be relatively contained and were regression tested
on x86.

Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>