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. v1: https://lists.nongnu.org/archive/html/qemu-devel/2023-08/msg02005.html v2: https://lists.nongnu.org/archive/html/qemu-devel/2023-09/msg01773.html Changes since v2: * Rebased on top of current master * Removed all "drive-by" changes to feature names ("vmx-ept-uc", "vmx-ept-wb", "kvmclock", "vmx-invept-single-context", and "vmx-invept-single-context-noglobals") as these needed further discussion. * Changes to the generator script reduce the changes in formatting to the current feature_word_info even further to address the concern about code legibility. See Patch 5, "target/i386: Generate feature_word_info.c.inc" for all non-whitespace changes. Tim Wiederhake (5): target/i386: Split out feature_word_info target/i386: Translate feature_word_info to yaml target/i386: Remove comments from feature_word_info.c.inc target/i386: Fix feature_word_info.c.inc formatting target/i386: Generate feature_word_info.c.inc target/i386/cpu.c | 679 +------------------------- target/i386/feature_word_info.c.inc | 710 ++++++++++++++++++++++++++++ target/i386/feature_word_info.py | 71 +++ target/i386/feature_word_info.yaml | 701 +++++++++++++++++++++++++++ 4 files changed, 1483 insertions(+), 678 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 -- 2.43.0
