From: Jisheng Zhang Date: Thu, 12 Jan 2023 01:10:17 +0800 Subject: [PATCH v3 03/13] riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier In-Reply-To: <20230111171027.2392-1-jszhang@kernel.org> References: <20230111171027.2392-1-jszhang@kernel.org> Message-ID: <20230111171027.2392-4-jszhang@kernel.org> List-Id: To: kvm-riscv@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Currently riscv_cpufeature_patch_func() does nothing at the RISCV_ALTERNATIVES_EARLY_BOOT stage. Add a check to detect whether we are in this stage and exit early. This will allow us to use riscv_cpufeature_patch_func() for scanning of all ISA extensions. Signed-off-by: Jisheng Zhang Reviewed-by: Andrew Jones Reviewed-by: Heiko Stuebner --- arch/riscv/kernel/cpufeature.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 421b3d9578cc..37e8c5e69754 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -328,6 +328,9 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin, struct alt_entry *alt; u32 tmp; + if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) + return; + for (alt = begin; alt < end; alt++) { if (alt->vendor_id != 0) continue; -- 2.38.1