On Thu, 6 Mar 2025 02:33:37 +0000
Alireza Sanaee via <qemu-devel@nongnu.org> wrote:
Hi everyone,
v1 -> v2: I just rebased this patchset which initially was posted in
Sep 2024.
Thanks,
Alireza
> 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.
>
> Since we'll update the test PPTT table data, upgrade the revision of
> PPTT we build to revision 3 by handy.
>
> [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
>
> Yicong Yang (5):
> tests: virt: Allow changes to PPTT test table
> hw/acpi/aml-build: Set identical implementation flag for PPTT
> processor nodes
> hw/acpi/aml-build: Build a root node in the PPTT table
> hw/acpi/aml-build: Update the revision of PPTT table
> tests: virt: Update expected ACPI tables for virt test
>
> hw/acpi/aml-build.c | 26
> ++++++++++++++---- 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, 21 insertions(+), 5 deletions(-)
>