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From: Andrew Jones <ajones@ventanamicro.com>
To: "Clément Léger" <cleger@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
	 Palmer Dabbelt <palmer@dabbelt.com>,
	Anup Patel <anup@brainfault.org>,
	 Atish Patra <atishp@atishpatra.org>,
	Shuah Khan <shuah@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	 linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org,  kvm@vger.kernel.org,
	kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org,
	 Samuel Holland <samuel.holland@sifive.com>
Subject: Re: [PATCH v3 06/17] riscv: misaligned: use correct CONFIG_ ifdef for misaligned_access_speed
Date: Thu, 13 Mar 2025 14:06:09 +0100	[thread overview]
Message-ID: <20250313-a437330d8e1c638a9aa61e0a@orel> (raw)
In-Reply-To: <20250310151229.2365992-7-cleger@rivosinc.com>

On Mon, Mar 10, 2025 at 04:12:13PM +0100, Clément Léger wrote:
> misaligned_access_speed is defined under CONFIG_RISCV_SCALAR_MISALIGNED
> but was used under CONFIG_RISCV_PROBE_UNALIGNED_ACCESS. Fix that by
> using the correct config option.
> 
> Signed-off-by: Clément Léger <cleger@rivosinc.com>
> ---
>  arch/riscv/kernel/traps_misaligned.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
> index ffac424faa88..7fe25adf2539 100644
> --- a/arch/riscv/kernel/traps_misaligned.c
> +++ b/arch/riscv/kernel/traps_misaligned.c
> @@ -362,7 +362,7 @@ static int handle_scalar_misaligned_load(struct pt_regs *regs)
>  
>  	perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);
>  
> -#ifdef CONFIG_RISCV_PROBE_UNALIGNED_ACCESS
> +#ifdef CONFIG_RISCV_SCALAR_MISALIGNED
>  	*this_cpu_ptr(&misaligned_access_speed) = RISCV_HWPROBE_MISALIGNED_SCALAR_EMULATED;
>  #endif

Sure, but CONFIG_RISCV_PROBE_UNALIGNED_ACCESS selects
CONFIG_RISCV_SCALAR_MISALIGNED, so this isn't fixing anything. Changing it
does make sense though since this line in handle_scalar_misaligned_load()
"belongs" to check_unaligned_access_emulated() which is also under
CONFIG_RISCV_SCALAR_MISALIGNED. Anyway, all this unaligned configs need a
major cleanup.


Reviewed-by: Andrew Jones <ajones@ventanamicro.com>

Thanks,
drew

>  
> -- 
> 2.47.2
> 
> 
> -- 
> kvm-riscv mailing list
> kvm-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kvm-riscv

  reply	other threads:[~2025-03-13 13:06 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-10 15:12 [PATCH v3 00/17] riscv: add SBI FWFT misaligned exception delegation support Clément Léger
2025-03-10 15:12 ` [PATCH v3 01/17] riscv: add Firmware Feature (FWFT) SBI extensions definitions Clément Léger
2025-03-13 12:24   ` Andrew Jones
2025-03-10 15:12 ` [PATCH v3 02/17] riscv: sbi: add FWFT extension interface Clément Léger
2025-03-13 12:39   ` Andrew Jones
2025-03-14 11:33     ` Clément Léger
2025-03-14 12:02       ` Andrew Jones
2025-03-14 12:23         ` Clément Léger
2025-03-10 15:12 ` [PATCH v3 03/17] riscv: sbi: add SBI FWFT extension calls Clément Léger
2025-03-13 12:44   ` Andrew Jones
2025-03-14 11:21     ` Clément Léger
2025-03-10 15:12 ` [PATCH v3 04/17] riscv: misaligned: request misaligned exception from SBI Clément Léger
2025-03-13 12:52   ` Andrew Jones
2025-03-10 15:12 ` [PATCH v3 05/17] riscv: misaligned: use on_each_cpu() for scalar misaligned access probing Clément Léger
2025-03-13 12:57   ` Andrew Jones
2025-03-14 11:44     ` Clément Léger
2025-03-10 15:12 ` [PATCH v3 06/17] riscv: misaligned: use correct CONFIG_ ifdef for misaligned_access_speed Clément Léger
2025-03-13 13:06   ` Andrew Jones [this message]
2025-03-14 11:47     ` Clément Léger
2025-03-10 15:12 ` [PATCH v3 07/17] riscv: misaligned: move emulated access uniformity check in a function Clément Léger
2025-03-13 13:07   ` Andrew Jones
2025-03-10 15:12 ` [PATCH v3 08/17] riscv: misaligned: add a function to check misalign trap delegability Clément Léger
2025-03-13 13:19   ` Andrew Jones
2025-03-14 11:49     ` Clément Léger
2025-03-10 15:12 ` [PATCH v3 09/17] riscv: misaligned: factorize trap handling Clément Léger
2025-03-10 15:12 ` [PATCH v3 10/17] riscv: misaligned: enable IRQs while handling misaligned accesses Clément Léger
2025-03-10 15:12 ` [PATCH v3 11/17] riscv: misaligned: use get_user() instead of __get_user() Clément Léger
2025-03-10 15:12 ` [PATCH v3 12/17] Documentation/sysctl: add riscv to unaligned-trap supported archs Clément Léger
2025-03-10 15:12 ` [PATCH v3 13/17] selftests: riscv: add misaligned access testing Clément Léger
2025-03-10 15:12 ` [PATCH v3 14/17] RISC-V: KVM: add SBI extension init()/deinit() functions Clément Léger
2025-03-13 14:27   ` Andrew Jones
2025-03-14 13:53     ` Clément Léger
2025-03-10 15:12 ` [PATCH v3 15/17] RISC-V: KVM: add SBI extension reset callback Clément Léger
2025-03-13 14:29   ` Andrew Jones
2025-03-10 15:12 ` [PATCH v3 16/17] RISC-V: KVM: add support for FWFT SBI extension Clément Léger
2025-03-13 15:18   ` Andrew Jones
2025-03-10 15:12 ` [PATCH v3 17/17] RISC-V: KVM: add support for SBI_FWFT_MISALIGNED_DELEG Clément Léger
2025-03-13 15:23   ` Andrew Jones

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