Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,pci,virtio: fixes, cleanups

Lots of fixes, cleanups.
CPU hot-unplug improvements.
A new AER property for virtio devices, adding a dummy AER capability.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed 09 Dec 2020 18:04:28 GMT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (65 commits)
  hw/virtio-pci Added AER capability.
  hw/virtio-pci Added counter for pcie capabilities offsets.
  pcie_aer: Fix help message of pcie_aer_inject_error command
  x86: ich9: let firmware negotiate 'CPU hot-unplug with SMI' feature
  x86: ich9: factor out "guest_cpu_hotplug_features"
  tests/acpi: update expected files
  x86: acpi: let the firmware handle pending "CPU remove" events in SMM
  tests/acpi: allow expected files change
  x86: acpi: introduce AcpiPmInfo::smi_on_cpu_unplug
  acpi: cpuhp: introduce 'firmware performs eject' status/control bits
  hw/i386/pc: add max combined fw size as machine configuration option
  block/export: avoid g_return_val_if() input validation
  contrib/vhost-user-input: avoid g_return_val_if() input validation
  contrib/vhost-user-gpu: avoid g_return_val_if() input validation
  contrib/vhost-user-blk: avoid g_return_val_if() input validation
  .gitlab-ci: add build-libvhost-user
  libvhost-user: add a simple link test without glib
  libvhost-user: make it a meson subproject
  libvhost-user: drop qemu/osdep.h dependency
  libvhost-user: remove qemu/compiler.h usage
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 14 insertions, 5 deletions

diff --git a/docs/specs/acpi_cpu_hotplug.txt b/docs/specs/acpi_cpu_hotplug.txt
index 9bb22d1..9bd59ae 100644
--- a/docs/specs/acpi_cpu_hotplug.txt
+++ b/docs/specs/acpi_cpu_hotplug.txt
@@ -56,8 +56,11 @@ read access:
               no device check event to OSPM was issued.
               It's valid only when bit 0 is set.
            2: Device remove event, used to distinguish device for which
-              no device eject request to OSPM was issued.
-           3-7: reserved and should be ignored by OSPM
+              no device eject request to OSPM was issued. Firmware must
+              ignore this bit.
+           3: reserved and should be ignored by OSPM
+           4: if set to 1, OSPM requests firmware to perform device eject.
+           5-7: reserved and should be ignored by OSPM
     [0x5-0x7] reserved
     [0x8] Command data: (DWORD access)
           contains 0 unless value last stored in 'Command field' is one of:
@@ -79,10 +82,16 @@ write access:
                selected CPU device
             2: if set to 1 clears device remove event, set by OSPM
                after it has emitted device eject request for the
-               selected CPU device
+               selected CPU device.
             3: if set to 1 initiates device eject, set by OSPM when it
-               triggers CPU device removal and calls _EJ0 method
-            4-7: reserved, OSPM must clear them before writing to register
+               triggers CPU device removal and calls _EJ0 method or by firmware
+               when bit #4 is set. In case bit #4 were set, it's cleared as
+               part of device eject.
+            4: if set to 1, OSPM hands over device eject to firmware.
+               Firmware shall issue device eject request as described above
+               (bit #3) and OSPM should not touch device eject bit (#3) in case
+               it's asked firmware to perform CPU device eject.
+            5-7: reserved, OSPM must clear them before writing to register
     [0x5] Command field: (1 byte access)
           value:
             0: selects a CPU device with inserting/removing events and