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From: Xu Lu <luxu.kernel@bytedance.com>
To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	paul.walmsley@sifive.com, palmer@dabbelt.com,
	aou@eecs.berkeley.edu, alex@ghiti.fr, ajones@ventanamicro.com,
	brs@rivosinc.com
Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org, apw@canonical.com, joe@perches.com,
	Xu Lu <luxu.kernel@bytedance.com>
Subject: [PATCH v2 1/4] riscv: add ISA extension parsing for Zalasr
Date: Tue,  2 Sep 2025 12:24:29 +0800	[thread overview]
Message-ID: <20250902042432.78960-2-luxu.kernel@bytedance.com> (raw)
In-Reply-To: <20250902042432.78960-1-luxu.kernel@bytedance.com>

Add parsing for Zalasr ISA extension.

Signed-off-by: Xu Lu <luxu.kernel@bytedance.com>
---
 arch/riscv/include/asm/hwcap.h | 1 +
 arch/riscv/kernel/cpufeature.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index affd63e11b0a3..ae3852c4f2ca2 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -106,6 +106,7 @@
 #define RISCV_ISA_EXT_ZAAMO		97
 #define RISCV_ISA_EXT_ZALRSC		98
 #define RISCV_ISA_EXT_ZICBOP		99
+#define RISCV_ISA_EXT_ZALASR		100
 
 #define RISCV_ISA_EXT_XLINUXENVCFG	127
 
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 743d53415572e..bf9d3d92bf372 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -472,6 +472,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
 	__RISCV_ISA_EXT_DATA(zaamo, RISCV_ISA_EXT_ZAAMO),
 	__RISCV_ISA_EXT_DATA(zabha, RISCV_ISA_EXT_ZABHA),
 	__RISCV_ISA_EXT_DATA(zacas, RISCV_ISA_EXT_ZACAS),
+	__RISCV_ISA_EXT_DATA(zalasr, RISCV_ISA_EXT_ZALASR),
 	__RISCV_ISA_EXT_DATA(zalrsc, RISCV_ISA_EXT_ZALRSC),
 	__RISCV_ISA_EXT_DATA(zawrs, RISCV_ISA_EXT_ZAWRS),
 	__RISCV_ISA_EXT_DATA(zfa, RISCV_ISA_EXT_ZFA),
-- 
2.20.1


  reply	other threads:[~2025-09-02  4:24 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-02  4:24 [PATCH v2 0/4] riscv: Add Zalasr ISA extension support Xu Lu
2025-09-02  4:24 ` Xu Lu [this message]
2025-09-02  4:24 ` [PATCH v2 2/4] dt-bindings: riscv: Add Zalasr ISA extension description Xu Lu
2025-09-02 19:46   ` Conor Dooley
2025-09-02  4:24 ` [PATCH v2 3/4] riscv: Instroduce Zalasr instructions Xu Lu
2025-09-02  4:24 ` [PATCH v2 4/4] riscv: Use Zalasr for smp_load_acquire/smp_store_release Xu Lu
2025-09-03  1:06   ` kernel test robot
2025-09-02 16:59 ` [PATCH v2 0/4] riscv: Add Zalasr ISA extension support Andrea Parri
2025-09-03 11:41   ` [External] " Xu Lu
2025-09-17  4:01   ` Guo Ren
2025-09-17  4:57     ` Guo Ren
2025-09-18 16:48     ` Guo Ren
2025-09-18 21:24       ` Andrea Parri
2025-09-20  5:59         ` Guo Ren
2025-09-19  3:18       ` [External] " Xu Lu
2025-09-19  7:45         ` Andrea Parri
2025-09-19  8:22           ` Xu Lu
2025-09-20  6:04         ` Guo Ren

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