linux-kernel - [PATCH v3] x86/cpu/amd: fix the highest perf query for new AMD processors

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Message-ID: <20220901085939.2388861-1-Perry.Yuan@amd.com>
Date:   Thu, 1 Sep 2022 16:59:39 +0800
From:   Perry Yuan <Perry.Yuan@....com>
To:     <rafael.j.wysocki@...el.com>, <ray.huang@....com>,
        <viresh.kumar@...aro.org>
CC:     <Deepak.Sharma@....com>, <Mario.Limonciello@....com>,
        <Nathan.Fontenot@....com>, <Alexander.Deucher@....com>,
        <Jinzhou.Su@....com>, <Shimmer.Huang@....com>,
        <Xiaojian.Du@....com>, <Li.Meng@....com>,
        <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Perry Yuan <Perry.Yuan@....com>
Subject: [PATCH v3] x86/cpu/amd: fix the highest perf query for new AMD processors

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.

Acked-by: Huang Rui <ray.huang@....com>
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 48276c0e479d..bdb0bfa80525 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -1184,7 +1184,8 @@ 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) ||
-- 
2.34.1