[PATCH v4 01/10] riscv: Add ISA extension parsing for Zalasr

From: Xu Lu <luxu.kernel@bytedance.com>
To: corbet@lwn.net, paul.walmsley@sifive.com, palmer@dabbelt.com,
	aou@eecs.berkeley.edu, alex@ghiti.fr, robh@kernel.org,
	krzk+dt@kernel.org, conor+dt@kernel.org, will@kernel.org,
	peterz@infradead.org, boqun.feng@gmail.com, mark.rutland@arm.com,
	anup@brainfault.org, atish.patra@linux.dev, pbonzini@redhat.com,
	shuah@kernel.org, parri.andrea@gmail.com,
	ajones@ventanamicro.com, brs@rivosinc.com, guoren@kernel.org
Cc: linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
	linux-kselftest@vger.kernel.org, apw@canonical.com,
	joe@perches.com, lukas.bulwahn@gmail.com,
	Xu Lu <luxu.kernel@bytedance.com>
Subject: [PATCH v4 01/10] riscv: Add ISA extension parsing for Zalasr
Date: Mon, 20 Oct 2025 12:20:47 +0800	[thread overview]
Message-ID: <20251020042056.30283-2-luxu.kernel@bytedance.com> (raw)
In-Reply-To: <20251020042056.30283-1-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


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