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Tue, 10 Jun 2025 18:34:14 -0700 (PDT) Received: from ghost ([50.146.0.9]) by smtp.gmail.com with ESMTPSA id 00721157ae682-710f99e8f15sm18416907b3.71.2025.06.10.18.34.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Jun 2025 18:34:14 -0700 (PDT) Date: Tue, 10 Jun 2025 18:34:13 -0700 From: Charlie Jenkins To: Palmer Dabbelt Cc: rabenda.cn@gmail.com, Alexandre Ghiti , linux-riscv@lists.infradead.org, Paul Walmsley , aou@eecs.berkeley.edu, jesse@rivosinc.com, andybnac@gmail.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] riscv: vector: fix xtheadvector save/restore Message-ID: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, Jun 10, 2025 at 03:05:58PM -0700, Palmer Dabbelt wrote: > On Fri, 23 May 2025 02:46:50 PDT (-0700), rabenda.cn@gmail.com wrote: > > I will release v2 later to add explanation and add fix tag > > Sorry if I missed it, but I don't see a v2 (I'm scrubbing through stuff post > merge window). v2 is here: https://lore.kernel.org/all/9b9eb2337f3d5336ce813721f8ebea51e0b2b553.1747994822.git.rabenda.cn@gmail.com/ - Charlie > > > > > Thanks, > > > > Han > > > > On Fri, May 23, 2025 at 4:54 PM Alexandre Ghiti wrote: > > > > > > Hi Han, > > > > > > On 5/22/25 19:27, Han Gao wrote: > > > > Fix [1] save/restore vector register error > > > > > > > > Link: https://lore.kernel.org/all/20241113-xtheadvector-v11-9-236c22791ef9@rivosinc.com/ [1] > > > > > > > > > Would you mind rephrasing the log? It should explain what was wrong and > > > how you fixed it. > > > > > > Thanks, > > > > > > Alex > > > > > > > > > > > > > > Signed-off-by: Han Gao > > > > --- > > > > 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 (