From: Charlie Jenkins <charlie@rivosinc.com>
To: "Paul Walmsley" <paul.walmsley@sifive.com>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Albert Ou" <aou@eecs.berkeley.edu>,
"Guo Ren" <guoren@kernel.org>, "Conor Dooley" <conor@kernel.org>,
"Conor Dooley" <conor.dooley@microchip.com>,
"Clément Léger" <cleger@rivosinc.com>,
"Evan Green" <evan@rivosinc.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Charlie Jenkins <charlie@rivosinc.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>
Subject: [PATCH 2/2] riscv: cpufeature: Fix extension subset checking
Date: Wed, 24 Apr 2024 09:19:55 -0700 [thread overview]
Message-ID: <20240424-cpufeature_fixes-v1-2-585e73d2226b@rivosinc.com> (raw)
In-Reply-To: <20240424-cpufeature_fixes-v1-0-585e73d2226b@rivosinc.com>
This loop is supposed to check if ext->subset_ext_ids[j] is valid, rather
than if ext->subset_ext_ids[i] is valid, before setting the extension
id ext->subset_ext_ids[j] in isainfo->isa.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Fixes: 0d8295ed975b ("riscv: add ISA extension parsing for scalar crypto")
---
arch/riscv/kernel/cpufeature.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index c6e27b45e192..6dff7bb1db3f 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -607,7 +607,7 @@ static int __init riscv_fill_hwcap_from_ext_list(unsigned long *isa2hwcap)
if (ext->subset_ext_size) {
for (int j = 0; j < ext->subset_ext_size; j++) {
- if (riscv_isa_extension_check(ext->subset_ext_ids[i]))
+ if (riscv_isa_extension_check(ext->subset_ext_ids[j]))
set_bit(ext->subset_ext_ids[j], isainfo->isa);
}
}
--
2.44.0
next prev parent reply other threads:[~2024-04-24 16:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 16:19 [PATCH 0/2] riscv: Extension parsing fixes Charlie Jenkins
2024-04-24 16:19 ` [PATCH 1/2] riscv: cpufeature: Fix thead vector hwcap removal Charlie Jenkins
2024-04-26 9:02 ` Andrew Jones
2024-04-26 21:30 ` Charlie Jenkins
2024-04-24 16:19 ` Charlie Jenkins [this message]
2024-04-26 9:04 ` [PATCH 2/2] riscv: cpufeature: Fix extension subset checking Andrew Jones
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