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GET /api/1.2/patches/2225619/?format=api
{ "id": 2225619, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2225619/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260421093715.2995067-3-frank.chang@sifive.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.2/projects/14/?format=api", "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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421093715.2995067-3-frank.chang@sifive.com>", "list_archive_url": null, "date": "2026-04-21T09:37:11", "name": "[v4,2/6] target/riscv: Add a helper to return the current effective priv mode", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2b5dd71440da5634de81fc770fd2d3317da740ca", "submitter": { "id": 79604, "url": "http://patchwork.ozlabs.org/api/1.2/people/79604/?format=api", "name": "Frank Chang", "email": "frank.chang@sifive.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260421093715.2995067-3-frank.chang@sifive.com/mbox/", "series": [ { "id": 500769, "url": "http://patchwork.ozlabs.org/api/1.2/series/500769/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500769", "date": "2026-04-21T09:37:09", "name": "Fix Zjpm implementation", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/500769/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225619/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225619/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "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=asuohkno;\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-pf1-x430.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 <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Frank Chang <frank.chang@sifive.com>\n\nThis helper returns the current effective privilege mode.\n\nSigned-off-by: Frank Chang <frank.chang@sifive.com>\n---\n target/riscv/cpu.h | 37 +++++++++++++++++++++++++++++++++++++\n target/riscv/cpu_helper.c | 15 +++++----------\n 2 files changed, 42 insertions(+), 10 deletions(-)", "diff": "diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h\nindex 4c0676ed53b..672f0dab0fb 100644\n--- a/target/riscv/cpu.h\n+++ b/target/riscv/cpu.h\n@@ -806,6 +806,43 @@ static inline RISCVMXL riscv_cpu_sxl(CPURISCVState *env)\n }\n #endif\n \n+/*\n+ * Returns the current effective privilege mode.\n+ *\n+ * @env: CPURISCVState\n+ * @priv: The returned effective privilege mode.\n+ * @virt: The returned effective virtualization mode.\n+ *\n+ * Returns true if the effective privilege mode is modified.\n+ */\n+static inline QEMU_ALWAYS_INLINE\n+bool riscv_cpu_eff_priv(CPURISCVState *env, int *priv, bool *virt)\n+{\n+ int mode = env->priv;\n+ bool virt_enabled = false;\n+ bool mode_modified = false;\n+\n+#ifndef CONFIG_USER_ONLY\n+ if (mode == PRV_M && get_field(env->mstatus, MSTATUS_MPRV)) {\n+ mode = get_field(env->mstatus, MSTATUS_MPP);\n+ virt_enabled = get_field(env->mstatus, MSTATUS_MPV) && (mode != PRV_M);\n+ mode_modified = true;\n+ } else {\n+ virt_enabled = env->virt_enabled;\n+ }\n+#endif\n+\n+ if (priv) {\n+ *priv = mode;\n+ }\n+\n+ if (virt) {\n+ *virt = virt_enabled;\n+ }\n+\n+ return mode_modified;\n+}\n+\n static inline bool riscv_cpu_allow_16bit_insn(const RISCVCPUConfig *cfg,\n target_long priv_ver,\n uint32_t misa_ext)\ndiff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c\nindex 659150c6462..513bad21afa 100644\n--- a/target/riscv/cpu_helper.c\n+++ b/target/riscv/cpu_helper.c\n@@ -45,19 +45,14 @@ int riscv_env_mmu_index(CPURISCVState *env, bool ifetch)\n #else\n bool virt = env->virt_enabled;\n int mode = env->priv;\n+ bool mode_modified = false;\n \n /* All priv -> mmu_idx mapping are here */\n if (!ifetch) {\n- uint64_t status = env->mstatus;\n-\n- if (mode == PRV_M && get_field(status, MSTATUS_MPRV)) {\n- mode = get_field(env->mstatus, MSTATUS_MPP);\n- virt = get_field(env->mstatus, MSTATUS_MPV) &&\n- (mode != PRV_M);\n- if (virt) {\n- status = env->vsstatus;\n- }\n- }\n+ mode_modified = riscv_cpu_eff_priv(env, &mode, &virt);\n+ uint64_t status = (mode_modified && virt) ? env->vsstatus :\n+ env->mstatus;\n+\n if (mode == PRV_S && get_field(status, MSTATUS_SUM)) {\n mode = MMUIdx_S_SUM;\n }\n", "prefixes": [ "v4", "2/6" ] }