Please CC linux-acpi@xxxxxxxxxxxxxxx on ACPI-related changes (added now). On Wed, Jun 22, 2022 at 5:29 AM Tony W Wang-oc <TonyWWang-oc@xxxxxxxxxxx> wrote: > > Recent Zhaoxin CPUs support X86_FEATURE_MWAIT that implies the > MONITOR/MWAIT instructions can be used for ACPI Cx state. The BIOS > declares Cx state in _CST object to use FFH on Zhaoxin systems. So > let function ffh_cstate_init() support Zhaoxin too. > > Signed-off-by: Tony W Wang-oc <TonyWWang-oc@xxxxxxxxxxx> > --- > arch/x86/kernel/acpi/cstate.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c > index 7945eae..d4185e1 100644 > --- a/arch/x86/kernel/acpi/cstate.c > +++ b/arch/x86/kernel/acpi/cstate.c > @@ -213,7 +213,9 @@ static int __init ffh_cstate_init(void) > > if (c->x86_vendor != X86_VENDOR_INTEL && > c->x86_vendor != X86_VENDOR_AMD && > - c->x86_vendor != X86_VENDOR_HYGON) > + c->x86_vendor != X86_VENDOR_HYGON && > + c->x86_vendor != X86_VENDOR_CENTAUR && > + c->x86_vendor != X86_VENDOR_ZHAOXIN) Centaur is not mentioned in the changelog and it should be. > return -1; > > cpu_cstate_entry = alloc_percpu(struct cstate_entry); > --
