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Message-ID: <YqhJvmQqs86txz1V@amd.com>
Date: Tue, 14 Jun 2022 16:41:34 +0800
From: Huang Rui <ray.huang@....com>
To: "Yuan, Perry" <Perry.Yuan@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
"x86@...nel.org" <x86@...nel.org>,
"H. Peter Anvin" <hpa@...or.com>,
"Lendacky, Thomas" <Thomas.Lendacky@....com>,
"Limonciello, Mario" <Mario.Limonciello@....com>,
Jane Malalane <jane.malalane@...rix.com>,
"Phillips, Kim" <kim.phillips@....com>,
Tony Luck <tony.luck@...el.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"Su, Jinzhou (Joe)" <Jinzhou.Su@....com>,
"Meng, Li (Jassmine)" <Li.Meng@....com>,
"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: amd_pstate: fix the highest perf query for new
AMD processors
On Tue, Jun 14, 2022 at 11:52:28AM +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.
>
You needs to change the prefix of the subject, because it's not the
amd-pstate driver.
x86/amd: Fix the highest perf query for new AMD processors
Thanks,
Ray
> Signed-off-by: Perry Yuan <Perry.Yuan@....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
>
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