linux-kernel - [PATCH 3/3] MIPS: Loongson64: Disable exec hazard

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Message-Id: <20200113101501.37985-3-jiaxun.yang@flygoat.com>
Date:   Mon, 13 Jan 2020 18:15:01 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     linux-mips@...r.kernel.org
Cc:     chenhc@...ote.com, paul.burton@...s.com,
        linux-kernel@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH 3/3] MIPS: Loongson64: Disable exec hazard

Loongson64 has hardware mechanism to prevent hazard issue,
so we can simply disable exec hazard in cpu-features.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h b/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
index 7dc8d75445a9..23aa8ed7cb9e 100644
--- a/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
@@ -46,5 +46,6 @@
 #define cpu_has_wsbh		1
 #define cpu_has_ic_fills_f_dc	1
 #define cpu_hwrena_impl_bits	0xc0000000
+#define cpu_has_mips_r2_exec_hazard 0
 
 #endif /* __ASM_MACH_LOONGSON64_CPU_FEATURE_OVERRIDES_H */
-- 
2.24.1