linux-kernel - [PATCH v2 2/2] MIPS: Loongson64: Define has_cpu_mips*r2

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Message-Id: <20180322142215.7705-2-jiaxun.yang@flygoat.com>
Date:   Thu, 22 Mar 2018 22:22:15 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     jhogan@...nel.org
Cc:     chenhc@...ote.com, linux-mips@...ux-mips.org,
        linux-kernel@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH v2 2/2] MIPS: Loongson64: Define has_cpu_mips*r2_user for Loongson-3

All loongson-3 processors support mips32r2 mips64r2 usermode instructions.
However 3A1000 3B1000 3B1500 should be treated as r1 in kernel.

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 581915ce231c..71c893249374 100644
--- a/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h
@@ -49,6 +49,8 @@
 #define cpu_has_wsbh		1
 #define cpu_has_ic_fills_f_dc	1
 #define cpu_hwrena_impl_bits	0xc0000000
+#define cpu_has_mips32r2_user  1
+#define cpu_has_mips64r2_user  1
 #endif
 
 #endif /* __ASM_MACH_LOONGSON64_CPU_FEATURE_OVERRIDES_H */
-- 
2.16.2