OS like Linux is using PPTT processor node's identical implementation flag [1] to infer whether the whole system or a certain CPU cluster is homogeneous or not [2]. QEMU currently only support building homogeneous system, set the flag to indicate the fact. Build a root node in PPTT for indicates the identical implementation which is needed for a multi-socket system. Update the related PPTT tables as well.
[1] ACPI 6.5 Table 5.158: Processor Structure Flags [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/acpi/pptt.c?h=v6.11-rc1#n810 History: * v4->v5: fixed a typo * v3->v4: PPTT rev to 2 * v2->v3: rebase to 10 Alireza Sanaee (2): hw/acpi/aml-build: Build a root node in the PPTT table tests: virt: Update expected ACPI tables for virt test Yicong Yang (2): tests: virt: Allow changes to PPTT test table hw/acpi/aml-build: Set identical implementation flag for PPTT processor nodes hw/acpi/aml-build.c | 24 +++++++++++++++--- tests/data/acpi/aarch64/virt/PPTT | Bin 76 -> 96 bytes .../data/acpi/aarch64/virt/PPTT.acpihmatvirt | Bin 156 -> 176 bytes tests/data/acpi/aarch64/virt/PPTT.topology | Bin 336 -> 356 bytes 4 files changed, 20 insertions(+), 4 deletions(-) -- 2.34.1
