* [PATCH v2] x86/cpu/amd: fix the highest perf query for new AMD processors
@ 2022-06-14 8:52 Perry Yuan
2022-06-15 4:17 ` Huang Rui
0 siblings, 1 reply; 2+ messages in thread
From: Perry Yuan @ 2022-06-14 8:52 UTC (permalink / raw)
To: Ray.Huang, Thomas Gleixner, Ingo Molnar, Borislav Petkov,
Dave Hansen, x86, H. Peter Anvin, Perry Yuan, Kim Phillips,
Tom Lendacky, Tony Luck, Jane Malalane, Mario Limonciello,
linux-kernel
Cc: Jinzhou.Su, Li.Meng, linux-pm
In order to get the corrent highest perf for some new AMD processors,
the amd_get_highest_perf() call will check the CPU model and
return correct highest perf value.
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
---
arch/x86/kernel/cpu/amd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 0c0b09796ced..ff2075f26ef4 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -1152,7 +1152,8 @@ u32 amd_get_highest_perf(void)
struct cpuinfo_x86 *c = &boot_cpu_data;
if (c->x86 == 0x17 && ((c->x86_model >= 0x30 && c->x86_model < 0x40) ||
- (c->x86_model >= 0x70 && c->x86_model < 0x80)))
+ (c->x86_model >= 0x70 && c->x86_model < 0x80) ||
+ (c->x86_model >= 0xa0 && c->x86_model < 0xb0)))
return 166;
if (c->x86 == 0x19 && ((c->x86_model >= 0x20 && c->x86_model < 0x30) ||
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] x86/cpu/amd: fix the highest perf query for new AMD processors
2022-06-14 8:52 [PATCH v2] x86/cpu/amd: fix the highest perf query for new AMD processors Perry Yuan
@ 2022-06-15 4:17 ` Huang Rui
0 siblings, 0 replies; 2+ messages in thread
From: Huang Rui @ 2022-06-15 4:17 UTC (permalink / raw)
To: Yuan, Perry
Cc: Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, x86,
H. Peter Anvin, Phillips, Kim, Lendacky, Thomas, Tony Luck,
Jane Malalane, Limonciello, Mario, linux-kernel, Su,
Jinzhou (Joe), Meng, Li (Jassmine),
linux-pm
On Tue, Jun 14, 2022 at 04:52:54PM +0800, Yuan, Perry wrote:
> In order to get the corrent highest perf for some new AMD processors,
> the amd_get_highest_perf() call will check the CPU model and
> return correct highest perf value.
>
> Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
> ---
> arch/x86/kernel/cpu/amd.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
> index 0c0b09796ced..ff2075f26ef4 100644
> --- a/arch/x86/kernel/cpu/amd.c
> +++ b/arch/x86/kernel/cpu/amd.c
> @@ -1152,7 +1152,8 @@ u32 amd_get_highest_perf(void)
> struct cpuinfo_x86 *c = &boot_cpu_data;
>
> if (c->x86 == 0x17 && ((c->x86_model >= 0x30 && c->x86_model < 0x40) ||
> - (c->x86_model >= 0x70 && c->x86_model < 0x80)))
> + (c->x86_model >= 0x70 && c->x86_model < 0x80) ||
> + (c->x86_model >= 0xa0 && c->x86_model < 0xb0)))
> return 166;
>
> if (c->x86 == 0x19 && ((c->x86_model >= 0x20 && c->x86_model < 0x30) ||
> --
> 2.25.1
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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