From: Charlie Jenkins <charlie@rivosinc.com>
To: Han Gao <rabenda.cn@gmail.com>
Cc: linux-riscv@lists.infradead.org,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>, Jesse Taube <jesse@rivosinc.com>,
Andy Chiu <andybnac@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] riscv: vector: fix xtheadvector save/restore
Date: Thu, 22 May 2025 20:15:25 -0700 [thread overview]
Message-ID: <aC_oTWjLMUfgKeIK@ghost> (raw)
In-Reply-To: <c221c98dc2369ea691e3eb664bf084dc909496f6.1747934680.git.rabenda.cn@gmail.com>
On Fri, May 23, 2025 at 01:27:01AM +0800, Han Gao wrote:
> Fix [1] save/restore vector register error
>
> Link: https://lore.kernel.org/all/20241113-xtheadvector-v11-9-236c22791ef9@rivosinc.com/ [1]
>
> Signed-off-by: Han Gao <rabenda.cn@gmail.com>
Thank you!
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
> ---
> arch/riscv/include/asm/vector.h | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/arch/riscv/include/asm/vector.h b/arch/riscv/include/asm/vector.h
> index e8a83f55be2b..7df6355023a3 100644
> --- a/arch/riscv/include/asm/vector.h
> +++ b/arch/riscv/include/asm/vector.h
> @@ -200,11 +200,11 @@ static inline void __riscv_v_vstate_save(struct __riscv_v_ext_state *save_to,
> THEAD_VSETVLI_T4X0E8M8D1
> THEAD_VSB_V_V0T0
> "add t0, t0, t4\n\t"
> - THEAD_VSB_V_V0T0
> + THEAD_VSB_V_V8T0
> "add t0, t0, t4\n\t"
> - THEAD_VSB_V_V0T0
> + THEAD_VSB_V_V16T0
> "add t0, t0, t4\n\t"
> - THEAD_VSB_V_V0T0
> + THEAD_VSB_V_V24T0
> : : "r" (datap) : "memory", "t0", "t4");
> } else {
> asm volatile (
> @@ -236,11 +236,11 @@ static inline void __riscv_v_vstate_restore(struct __riscv_v_ext_state *restore_
> THEAD_VSETVLI_T4X0E8M8D1
> THEAD_VLB_V_V0T0
> "add t0, t0, t4\n\t"
> - THEAD_VLB_V_V0T0
> + THEAD_VLB_V_V8T0
> "add t0, t0, t4\n\t"
> - THEAD_VLB_V_V0T0
> + THEAD_VLB_V_V16T0
> "add t0, t0, t4\n\t"
> - THEAD_VLB_V_V0T0
> + THEAD_VLB_V_V24T0
> : : "r" (datap) : "memory", "t0", "t4");
> } else {
> asm volatile (
> --
> 2.47.2
>
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next prev parent reply other threads:[~2025-05-23 3:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-22 17:27 [PATCH] riscv: vector: fix xtheadvector save/restore Han Gao
2025-05-22 18:27 ` Xiongchuan Tan
2025-05-22 22:15 ` Han Gao
2025-05-23 3:15 ` Charlie Jenkins [this message]
2025-05-23 8:53 ` Alexandre Ghiti
2025-05-23 9:46 ` Han Gao
2025-06-10 22:05 ` Palmer Dabbelt
2025-06-11 1:34 ` Charlie Jenkins
2025-06-12 20:10 ` patchwork-bot+linux-riscv
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