[PATCH v3 0/5] Change ghes driver to use HEST-based offsets

[Mauro Carvalho Chehab]

This  series was part of the previous PR to add generic error injection
support on GHES. It depends on a cleanup patch series sent earlier
today:

    
cover.1733297707.git.mchehab+huawei@kernel.org/T/#t">https://lore.kernel.org/qemu-devel/cover.1733297707.git.mchehab+huawei@kernel.org/T/#t

It contains the changes of the math used to calculate offsets at HEST table 
and hardware_error firmware file. It prepares for the addition of GHES
error injection.

The first patch was previously at the cleanup series. It prepares
the logic to support multiple sources.

The second patch adds a new firmware file to store HEST address.

The third patch use the new firmware to calculate offsets using
HEST table.

Patches 4 and 5 add migration support. They assume that this
series will be merged for qemu 9.2 (maybe it is too late for that,
as QEMU is now on soft freeze). 

I tested migration using both virt-9.1 and virt-9.2 machines
on qemu 9.2.

I also tested migration with:

        qemu-9.1 -M virt-9.1 -cpu cortex-a57 => qemu-9.2 -M virt-9.1 -cpu 
cortex-a57
        qemu-9.2 -M virt-9.1 -cpu cortex-a57 => qemu-9.1 -M virt-9.1 -cpu 
cortex-a57 

The full qemu command when test backward-compatibility when running virt-9.1 is:


~/qemu/build/qemu-system-aarch64 \
-m 4g,maxmem=8G,slots=8 -monitor stdio -no-reboot -bios 
~/emulator/QEMU_EFI-silent.fd 
-kernel~/kernel/arm64_build/arch/arm64/boot/Image.gz -device 
pcie-root-port,id=root_port1 -device virtio-blk-pci,drive=hd -device 
virtio-net-pci,netdev=mynet,id=bob -drive 
if=none,file=~/emulator/debian.qcow2,format=qcow2,id=hd -object 
memory-backend-ram,size=4G,id=mem0 -netdev 
type=user,id=mynet,hostfwd=tcp::5555-:22 -qmp 
tcp:localhost:4445,server=on,wait=off -M 
virt-9.1,nvdimm=on,gic-version=3,ras=on -cpu max -smp 4 -numa 
node,nodeid=0,cpus=0-3,memdev=mem0 -append 'earlycon nomodeset root=/dev/vda1 
fsck.mode=skip tp_printk maxcpus=4'

(I actually call it from two different directories, one with qemu-9.1 and the 
other one with qemu-9.2.

For tests on qemu-9.2 with virt-9.2, I used a similar command:

~/qemu/build/qemu-system-aarch64 -m 4g,maxmem=8G,slots=8 -monitor stdio 
-no-reboot -bios ~/emulator/QEMU_EFI-silent.fd -kernel 
~/kernel/arm64_build/arch/arm64/boot/Image.gz -device 
pcie-root-port,id=root_port1 -device virtio-blk-pci,drive=hd -device 
virtio-net-pci,netdev=mynet,id=bob -drive 
if=none,file=~/emulator/debian.qcow2,format=qcow2,id=hd -object 
memory-backend-ram,size=4G,id=mem0 -netdev 
type=user,id=mynet,hostfwd=tcp::5555-:22 -qmp 
tcp:localhost:4445,server=on,wait=off -M 
virt-9.2,nvdimm=on,gic-version=3,ras=on -cpu max -smp 4 -numa 
node,nodeid=0,cpus=0-3,memdev=mem0 -append 'earlycon nomodeset root=/dev/vda1 
fsck.mode=skip tp_printk maxcpus=4'

---

v3: did some minor cleanups at the code, as suggested by Jonathan Cameron.

v2:
  - some whitespace and comment changes
  - patch 3/6 (acpi/ghes: rename the function which gets hw error offsets)
    was merged on the cleanup series.

Mauro Carvalho Chehab (5):
  acpi/ghes: Prepare to support multiple sources on ghes
  acpi/ghes: add a firmware file with HEST address
  acpi/ghes: Use HEST table offsets when preparing GHES records
  acpi/generic_event_device: Update GHES migration to cover hest addr
  acpi/generic_event_device: add logic to detect if HEST addr is
    available

 hw/acpi/generic_event_device.c |  30 +++++++
 hw/acpi/ghes.c                 | 160 +++++++++++++++++++++++++++++----
 hw/arm/virt-acpi-build.c       |  33 ++++++-
 hw/core/machine.c              |   2 +
 include/hw/acpi/ghes.h         |  23 +++--
 5 files changed, 220 insertions(+), 28 deletions(-)

-- 
2.47.1