{"id":2219156,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2219156/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260402125234.1371897-5-max.chou@sifive.com>","date":"2026-04-02T12:52:29","name":"[v6,4/9] target/riscv: rvv: Introduce reset_ill_vtype to reset illegal vtype CSR","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"0e4b87c5ec45554cd47856f8c2db5597be960a65","submitter":{"id":86650,"url":"http://patchwork.ozlabs.org/api/1.0/people/86650/?format=json","name":"Max Chou","email":"max.chou@sifive.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402125234.1371897-5-max.chou@sifive.com/mbox/","series":[{"id":498485,"url":"http://patchwork.ozlabs.org/api/1.0/series/498485/?format=json","date":"2026-04-02T12:52:26","name":"Add Zvfbfa extension support","version":6,"mbox":"http://patchwork.ozlabs.org/series/498485/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219156/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256\n header.s=google header.b=QY7ODIQL;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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helo=mail-pj1-x1034.google.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Replace the same vill reset flow by reset_ill_vtype function.\n\nReviewed-by: Daniel Henrique Barboza \nReviewed-by: Chao Liu \nReviewed-by: Alistair Francis \nReviewed-by: Nutty Liu \nSigned-off-by: Max Chou \n---\n target/riscv/vector_helper.c | 21 +++++++++++----------\n 1 file changed, 11 insertions(+), 10 deletions(-)","diff":"diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c\nindex 63ca6fe16b..1e0cce5ae5 100644\n--- a/target/riscv/vector_helper.c\n+++ b/target/riscv/vector_helper.c\n@@ -49,6 +49,15 @@ static target_ulong vtype_reserved(CPURISCVState *env, target_ulong vtype)\n return reserved;\n }\n \n+static inline void reset_ill_vtype(CPURISCVState *env)\n+{\n+ /* only set vill bit. */\n+ env->vill = 1;\n+ env->vtype = 0;\n+ env->vl = 0;\n+ env->vstart = 0;\n+}\n+\n target_ulong HELPER(vsetvl)(CPURISCVState *env, target_ulong s1,\n target_ulong s2, target_ulong x0)\n {\n@@ -93,11 +102,7 @@ target_ulong HELPER(vsetvl)(CPURISCVState *env, target_ulong s1,\n }\n \n if ((sew > cpu->cfg.elen) || vill || (vtype_reserved(env, s2) != 0)) {\n- /* only set vill bit. */\n- env->vill = 1;\n- env->vtype = 0;\n- env->vl = 0;\n- env->vstart = 0;\n+ reset_ill_vtype(env);\n return 0;\n }\n \n@@ -113,11 +118,7 @@ target_ulong HELPER(vsetvl)(CPURISCVState *env, target_ulong s1,\n }\n \n if (cpu->cfg.rvv_vsetvl_x0_vill && x0 && (env->vl != vl)) {\n- /* only set vill bit. */\n- env->vill = 1;\n- env->vtype = 0;\n- env->vl = 0;\n- env->vstart = 0;\n+ reset_ill_vtype(env);\n return 0;\n }\n \n","prefixes":["v6","4/9"]}