From: Andrew Jones <ajones@ventanamicro.com>
To: Jisheng Zhang <jszhang@kernel.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/8] riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier
Date: Thu, 6 Oct 2022 15:12:46 +0200 [thread overview]
Message-ID: <20221006131246.45m2qqoqfzq6dmls@kamzik> (raw)
In-Reply-To: <20221006070818.3616-3-jszhang@kernel.org>
On Thu, Oct 06, 2022 at 03:08:12PM +0800, Jisheng Zhang wrote:
> Now, the riscv_cpufeature_patch_func() do nothing in the stage of
> RISCV_ALTERNATIVES_EARLY_BOOT. We can move the detection of "early
> boot" stage earlier.
>
> In following patch, we will make riscv_cpufeature_patch_func() scans
> all ISA extensions.
>
> Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
> ---
> 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 03611b3ef45e..afa54635c180 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -307,6 +307,9 @@ 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;
> --
> 2.37.2
>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
next prev parent reply other threads:[~2022-10-06 13:12 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-06 7:08 [PATCH 0/8] riscv: improve boot time isa extensions handling Jisheng Zhang
2022-10-06 7:08 ` [PATCH 1/8] riscv: move riscv_noncoherent_supported() out of ZICBOM probe Jisheng Zhang
2022-10-06 13:10 ` Andrew Jones
2022-10-06 17:44 ` Andrew Jones
2022-10-07 9:18 ` Heiko Stübner
2022-10-08 13:06 ` Conor Dooley
2022-10-08 13:59 ` Jisheng Zhang
2022-10-13 5:37 ` Conor Dooley
2022-10-06 7:08 ` [PATCH 2/8] riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier Jisheng Zhang
2022-10-06 13:12 ` Andrew Jones [this message]
2022-10-07 9:38 ` Heiko Stübner
2022-10-06 7:08 ` [PATCH 3/8] riscv: hwcap: make ISA extension ids can be used in asm Jisheng Zhang
2022-10-06 13:15 ` Andrew Jones
2022-10-07 9:22 ` Heiko Stübner
2022-10-06 7:08 ` [PATCH 4/8] riscv: cpufeature: extend riscv_cpufeature_patch_func to all ISA extensions Jisheng Zhang
2022-10-06 13:31 ` Andrew Jones
2022-10-07 11:54 ` Heiko Stübner
2022-10-13 13:28 ` Heiko Stuebner
2022-10-06 7:08 ` [PATCH 5/8] riscv: introduce riscv_has_extension_[un]likely() Jisheng Zhang
2022-10-06 13:36 ` Andrew Jones
2022-10-06 7:08 ` [PATCH 6/8] riscv: fpu: switch has_fpu() to riscv_has_extension_likely() Jisheng Zhang
2022-10-06 13:36 ` Andrew Jones
2022-10-07 15:11 ` Heiko Stübner
2022-10-06 7:08 ` [PATCH 7/8] riscv: cpu_relax: switch " Jisheng Zhang
2022-10-06 13:28 ` kernel test robot
2022-10-06 13:37 ` Andrew Jones
2022-10-07 15:12 ` Heiko Stübner
2022-10-07 18:14 ` kernel test robot
2022-10-06 7:08 ` [PATCH 8/8] riscv: remove riscv_isa_ext_keys[] array and related usage Jisheng Zhang
2022-10-06 13:38 ` Andrew Jones
2022-10-07 15:12 ` Heiko Stübner
2022-10-13 16:20 ` [PATCH 0/8] riscv: improve boot time isa extensions handling Andrew Jones
2022-10-29 9:56 ` Andrew Jones
2022-10-29 11:38 ` Jisheng Zhang
2022-10-30 16:03 ` Jisheng Zhang
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