On 2025/2/28 19:12, Dietmar Eggemann wrote: > On 18/02/2025 15:10, Yicong Yang wrote: >> From: Yicong Yang <yangyic...@hisilicon.com> >> >> The core CPU control framework supports runtime SMT control which >> is not yet supported on arm64. Besides the general vulnerabilities >> concerns we want this runtime control on our arm64 server for: >> >> - better single CPU performance in some cases >> - saving overall power consumption >> >> This patchset implements it in the following aspects: >> >> - Provides a default topology_is_primary_thread() >> - support retrieve SMT thread number on OF based system >> - support retrieve SMT thread number on ACPI based system >> - select HOTPLUG_SMT for arm64 >> >> Tests has been done on our ACPI based arm64 server and on ACPI/OF >> based QEMU VMs. > > [...] > >> Yicong Yang (4): >> cpu/SMT: Provide a default topology_is_primary_thread() >> arch_topology: Support SMT control for OF based system >> arm64: topology: Support SMT control on ACPI based system >> arm64: Kconfig: Enable HOTPLUG_SMT >> >> arch/arm64/Kconfig | 1 + >> arch/arm64/kernel/topology.c | 66 +++++++++++++++++++++++++++++ >> arch/powerpc/include/asm/topology.h | 1 + >> arch/x86/include/asm/topology.h | 2 +- >> drivers/base/arch_topology.c | 27 ++++++++++++ >> include/linux/topology.h | 22 ++++++++++ >> 6 files changed, 118 insertions(+), 1 deletion(-) > > With the review comments on the individual patches [0-3]/4:
will fix. > > Reviewed-by: Dietmar Eggemann <dietmar.eggem...@arm.com> > Thanks.
