linux-kernel - [PATCH v4 1/4] riscv: Add ISA extension parsing for Svvptc

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Message-Id: <20240717060125.139416-2-alexghiti@rivosinc.com>
Date: Wed, 17 Jul 2024 08:01:22 +0200
From: Alexandre Ghiti <alexghiti@...osinc.com>
To: Conor Dooley <conor@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Ved Shanbhogue <ved@...osinc.com>,
	Matt Evans <mev@...osinc.com>,
	yunhui cui <cuiyunhui@...edance.com>,
	Anup Patel <anup@...infault.org>,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	devicetree@...r.kernel.org
Cc: Alexandre Ghiti <alexghiti@...osinc.com>,
	Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v4 1/4] riscv: Add ISA extension parsing for Svvptc

Add support to parse the Svvptc string in the riscv,isa string.

Signed-off-by: Alexandre Ghiti <alexghiti@...osinc.com>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.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 e17d0078a651..6dd0dd8beb30 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -81,6 +81,7 @@
 #define RISCV_ISA_EXT_ZTSO		72
 #define RISCV_ISA_EXT_ZACAS		73
 #define RISCV_ISA_EXT_XANDESPMU		74
+#define RISCV_ISA_EXT_SVVPTC		75
 
 #define RISCV_ISA_EXT_XLINUXENVCFG	127
 
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 5ef48cb20ee1..60780d246743 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -305,6 +305,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
 	__RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT),
 	__RISCV_ISA_EXT_DATA(svpbmt, RISCV_ISA_EXT_SVPBMT),
 	__RISCV_ISA_EXT_DATA(xandespmu, RISCV_ISA_EXT_XANDESPMU),
+	__RISCV_ISA_EXT_DATA(svvptc, RISCV_ISA_EXT_SVVPTC),
 };
 
 const size_t riscv_isa_ext_count = ARRAY_SIZE(riscv_isa_ext);
-- 
2.39.2