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[PATCH v2 00/10] Generate x86 cpu features
From: |
Tim Wiederhake |
Subject: |
[PATCH v2 00/10] Generate x86 cpu features |
Date: |
Fri, 8 Sep 2023 14:45:24 +0200 |
Synchronizing the list of cpu features and models with qemu is a recurring
task in libvirt. For x86, this is done by reading qom-list-properties for
max-x86_64-cpu and manually filtering out everthing that does not look like
a feature name, as well as parsing target/i386/cpu.c for cpu models.
This is a flawed, tedious and error-prone procedure. Ideally, qemu
and libvirt would query a common source for cpu feature and model
related information. Meanwhile, converting this information into an easier
to parse format would help libvirt a lot.
This patch series converts the cpu feature information present in
target/i386/cpu.c (`feature_word_info`) into a yaml file and adds a
script to generate the c code from this data.
A patch set to convert the cpu model data (`builtin_x86_defs`) in the
same way will follow.
v1: https://lists.nongnu.org/archive/html/qemu-devel/2023-08/msg02005.html
Changes since v1:
* Incorporated changes from
https://lists.nongnu.org/archive/html/qemu-devel/2023-08/msg04241.html.
* Changed data format from xml to yaml, as proposed in
https://lists.nongnu.org/archive/html/qemu-devel/2023-09/msg01033.html.
Using json has some drawbacks, see
https://lists.nongnu.org/archive/html/qemu-devel/2023-08/msg03384.html.
* Rebased on top of current master. Features added in the meantime:
amx-complex and vmx-enable-user-wait-pause
* Split up the reformatting of feature_word_info.c.inc to make it easier
to review. These patches could be squashed together before merging.
Tim Wiederhake (10):
target/i386: Add missing feature names in FEAT_VMX_EPT_VPID_CAPS
target/i386: Fix feature names in FEAT_VMX_EPT_VPID_CAPS
target/i386: Fix duplicated feature name in FEAT_KVM
target/i386: Split out feature_word_info
target/i386: Translate feature_word_info to yaml
target/i386: Format feature_word_info.c.inc: Remove comments
target/i386: Format feature_word_info.c.inc: feat_names
target/i386: Format feature_word_info.c.inc: Unfold cpuid member
target/i386: Format feature_word_info.c.inc: Whitespaces and trailing
commas
target/i386: Autogenerate feature_word_info.c.inc
target/i386/cpu.c | 677 +-----------------
target/i386/feature_word_info.c.inc | 1030 +++++++++++++++++++++++++++
target/i386/feature_word_info.py | 62 ++
target/i386/feature_word_info.yaml | 697 ++++++++++++++++++
4 files changed, 1790 insertions(+), 676 deletions(-)
create mode 100644 target/i386/feature_word_info.c.inc
create mode 100755 target/i386/feature_word_info.py
create mode 100644 target/i386/feature_word_info.yaml
--
2.39.2
- [PATCH v2 00/10] Generate x86 cpu features,
Tim Wiederhake <=
- [PATCH v2 01/10] target/i386: Add missing feature names in FEAT_VMX_EPT_VPID_CAPS, Tim Wiederhake, 2023/09/08
- [PATCH v2 06/10] target/i386: Format feature_word_info.c.inc: Remove comments, Tim Wiederhake, 2023/09/08
- [PATCH v2 03/10] target/i386: Fix duplicated feature name in FEAT_KVM, Tim Wiederhake, 2023/09/08
- [PATCH v2 09/10] target/i386: Format feature_word_info.c.inc: Whitespaces and trailing commas, Tim Wiederhake, 2023/09/08
- [PATCH v2 07/10] target/i386: Format feature_word_info.c.inc: Fill out feat_names, Tim Wiederhake, 2023/09/08
- [PATCH v2 02/10] target/i386: Fix feature names in FEAT_VMX_EPT_VPID_CAPS, Tim Wiederhake, 2023/09/08