[PATCH 0/2] specify the accelerator type using "-accel" parameter

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From: Hyman <huangy81@xxxxxxxxxxxxxxx>

This patchset aims to support dirty ring feature which has been introduced
in kernel:
https://lore.kernel.org/lkml/8b3f68dd-c61c-16a0-2077-0a5d3d57a357@xxxxxxxxxx/

The QEMU patchset is also being applied for merge, the review may be under
the way:
https://lore.kernel.org/qemu-devel/20210108164601.406146-1-peterx@xxxxxxxxxx/

Since QEMU enable the dirty ring feature by specifying the "-accel" sub-parameter.
Libvirt use "-machine accel=xxx" option to specify the type of accelerator by
default, which is conflict with QEMU. Either the Libvirt or QEMU may compromise,

According to the Paolo Bonzini's patient and prompt explanation:
https://lore.kernel.org/qemu-devel/3aa73987-40e8-3619-0723-9f17f73850bd@xxxxxxxxxx/
We'd like to have Libvirt switch to "-accel xxx" instead, cause the "-machine"
options for accelerator are legacy and now there is a better mechanism.

This two patches are kind of standalone so maybe it cound be merged in advance
anyway. And the dirty-ring-support patch is reviewed under the way. Once the QEMU
patchset is merged, i'll ping the libvir-list and apply for merge the remainding
patch. The following are details: 
https://www.redhat.com/archives/libvir-list/2021-January/msg00660.html

The 2 patches do the following things:
1. introduce QEMU_CAPS_ACCEL so the the next patch can use it to choose the right
   option when specifying the accelerator type.

2. switch the option "-machine accel=xxx" to "-accel xxx" when specifying accelerator
   type once libvirt build QEMU command line, so that the next patch can build
   QEMU command line for accelerator type using "-accel xxx" directly.

Please review, Thanks!

Best Regards !

Hyman (2):
  qemu_capabilities: Introduce QEMU_CAPS_ACCEL
  qemu: use "-accel" option to specify accelerator instead of "-machine"

 src/qemu/qemu_capabilities.c                  |   2 +
 src/qemu/qemu_capabilities.h                  |   1 +
 src/qemu/qemu_command.c                       | 131 ++++++++++++++----
 .../caps_2.10.0.aarch64.xml                   |   1 +
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 .../caps_2.10.0.x86_64.xml                    |   1 +
 .../caps_2.11.0.s390x.xml                     |   1 +
 .../caps_2.11.0.x86_64.xml                    |   1 +
 .../caps_2.12.0.aarch64.xml                   |   1 +
 .../caps_2.12.0.ppc64.xml                     |   1 +
 .../caps_2.12.0.s390x.xml                     |   1 +
 .../caps_2.12.0.x86_64.xml                    |   1 +
 .../qemucapabilitiesdata/caps_2.9.0.ppc64.xml |   1 +
 .../qemucapabilitiesdata/caps_2.9.0.s390x.xml |   1 +
 .../caps_2.9.0.x86_64.xml                     |   1 +
 .../qemucapabilitiesdata/caps_3.0.0.ppc64.xml |   1 +
 .../caps_3.0.0.riscv32.xml                    |   1 +
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 .../qemucapabilitiesdata/caps_3.0.0.s390x.xml |   1 +
 .../caps_3.0.0.x86_64.xml                     |   1 +
 .../qemucapabilitiesdata/caps_3.1.0.ppc64.xml |   1 +
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 .../qemucapabilitiesdata/caps_4.0.0.s390x.xml |   1 +
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 .../qemucapabilitiesdata/caps_5.0.0.ppc64.xml |   1 +
 .../caps_5.0.0.riscv64.xml                    |   1 +
 .../caps_5.0.0.x86_64.xml                     |   1 +
 .../qemucapabilitiesdata/caps_5.1.0.sparc.xml |   1 +
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 .../virtio-rng-builtin.x86_64-latest.args     |   3 +-
 .../virtio-rng-egd-unix.x86_64-latest.args    |   3 +-
 .../virtio-transitional.x86_64-3.1.0.args     |   3 +-
 .../virtio-transitional.x86_64-latest.args    |   3 +-
 ...-default-cpu-kvm-pc-4.2.x86_64-latest.args |   3 +-
 ...default-cpu-kvm-q35-4.2.x86_64-latest.args |   3 +-
 ...-default-cpu-tcg-pc-4.2.x86_64-latest.args |   3 +-
 ...default-cpu-tcg-q35-4.2.x86_64-latest.args |   3 +-
 .../x86_64-pc-graphics.x86_64-latest.args     |   3 +-
 .../x86_64-pc-headless.x86_64-latest.args     |   3 +-
 .../x86_64-q35-graphics.x86_64-latest.args    |   3 +-
 .../x86_64-q35-headless.x86_64-latest.args    |   3 +-
 298 files changed, 653 insertions(+), 282 deletions(-)

-- 
2.24.3





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