[v3,1/2] cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode
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Message ID 20210518123413.20670-1-ggherdovich@suse.cz
State Accepted
Commit fbdc21e9b038d00d0d56fa4e0f7701d42ae08f00
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  • [v3,1/2] cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode
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Commit Message

Giovanni Gherdovich May 18, 2021, 12:34 p.m. UTC
Users may disable HWP in firmware, in which case intel_pstate wouldn't load
unless the CPU model is explicitly supported.

Add ICELAKE_X to the list of CPUs that can register intel_pstate while not
advertising the HWP capability. Without this change, an ICELAKE_X in no-HWP
mode could only use the acpi_cpufreq frequency scaling driver.

See also commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers
support").

Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
---
This replaces https://lore.kernel.org/lkml/20210513132051.31465-1-ggherdovich@suse.cz

 drivers/cpufreq/intel_pstate.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Rafael J. Wysocki May 21, 2021, 4:49 p.m. UTC | #1
On Tue, May 18, 2021 at 2:34 PM Giovanni Gherdovich <ggherdovich@suse.cz> wrote:
>
> Users may disable HWP in firmware, in which case intel_pstate wouldn't load
> unless the CPU model is explicitly supported.
>
> Add ICELAKE_X to the list of CPUs that can register intel_pstate while not
> advertising the HWP capability. Without this change, an ICELAKE_X in no-HWP
> mode could only use the acpi_cpufreq frequency scaling driver.
>
> See also commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers
> support").
>
> Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
> ---
> This replaces https://lore.kernel.org/lkml/20210513132051.31465-1-ggherdovich@suse.cz
>
>  drivers/cpufreq/intel_pstate.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index 0e69dffd5a76..9a93603acd3f 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -2087,6 +2087,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
>         X86_MATCH(ATOM_GOLDMONT,        core_funcs),
>         X86_MATCH(ATOM_GOLDMONT_PLUS,   core_funcs),
>         X86_MATCH(SKYLAKE_X,            core_funcs),
> +       X86_MATCH(ICELAKE_X,            core_funcs),
>         {}
>  };
>  MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
> --

Both patches in the series applied as 5.14 material, thanks!

Patch
diff mbox series

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 0e69dffd5a76..9a93603acd3f 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2087,6 +2087,7 @@  static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
 	X86_MATCH(ATOM_GOLDMONT,	core_funcs),
 	X86_MATCH(ATOM_GOLDMONT_PLUS,	core_funcs),
 	X86_MATCH(SKYLAKE_X,		core_funcs),
+	X86_MATCH(ICELAKE_X,		core_funcs),
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);