linux-kernel - [PATCH 6/8] riscv: fpu: switch has_fpu() to riscv_has_extension

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Message-Id: <20221006070818.3616-7-jszhang@kernel.org>
Date:   Thu,  6 Oct 2022 15:08:16 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 6/8] riscv: fpu: switch has_fpu() to riscv_has_extension_likely()

Switch has_fpu() from statich branch to the new helper
riscv_has_extension_likely().

Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
---
 arch/riscv/include/asm/switch_to.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/switch_to.h b/arch/riscv/include/asm/switch_to.h
index 11463489fec6..60f8ca01d36e 100644
--- a/arch/riscv/include/asm/switch_to.h
+++ b/arch/riscv/include/asm/switch_to.h
@@ -59,7 +59,8 @@ static inline void __switch_to_aux(struct task_struct *prev,
 
 static __always_inline bool has_fpu(void)
 {
-	return static_branch_likely(&riscv_isa_ext_keys[RISCV_ISA_EXT_KEY_FPU]);
+	return riscv_has_extension_likely(RISCV_ISA_EXT_f) ||
+		riscv_has_extension_likely(RISCV_ISA_EXT_d);
 }
 #else
 static __always_inline bool has_fpu(void) { return false; }
-- 
2.37.2