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GET /api/patches/1882066/?format=api
{ "id": 1882066, "url": "http://patchwork.ozlabs.org/api/patches/1882066/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20240103173349.398526-37-alex.bennee@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/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": "<20240103173349.398526-37-alex.bennee@linaro.org>", "list_archive_url": null, "date": "2024-01-03T17:33:42", "name": "[v2,36/43] plugins: Use different helpers when reading registers", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "13c90b3b36b1898b8d690a2397746ebcda431034", "submitter": { "id": 39532, "url": "http://patchwork.ozlabs.org/api/people/39532/?format=api", "name": "Alex Bennée", "email": "alex.bennee@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20240103173349.398526-37-alex.bennee@linaro.org/mbox/", "series": [ { "id": 388742, "url": "http://patchwork.ozlabs.org/api/series/388742/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=388742", "date": "2024-01-03T17:33:08", "name": "testing and plugin updates for 9.0 (pre-PR)", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/388742/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1882066/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1882066/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=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=JqUOyFxL;\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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Iglesias\" <edgar.iglesias@gmail.com>,\n Eduardo Habkost <eduardo@habkost.net>,\n Pierrick Bouvier <pierrick.bouvier@linaro.org>, qemu-riscv@nongnu.org,\n Alistair Francis <alistair.francis@wdc.com>,\n Akihiko Odaki <akihiko.odaki@daynix.com>", "Subject": "[PATCH v2 36/43] plugins: Use different helpers when reading\n registers", "Date": "Wed, 3 Jan 2024 17:33:42 +0000", "Message-Id": "<20240103173349.398526-37-alex.bennee@linaro.org>", "X-Mailer": "git-send-email 2.39.2", "In-Reply-To": "<20240103173349.398526-1-alex.bennee@linaro.org>", "References": "<20240103173349.398526-1-alex.bennee@linaro.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::32d;\n envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x32d.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, SPF_PASS=-0.001,\n T_SCC_BODY_TEXT_LINE=-0.01 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-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: Akihiko Odaki <akihiko.odaki@daynix.com>\n\nThis avoids optimizations incompatible when reading registers.\n\nSigned-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>\nMessage-Id: <20231213-gdb-v17-12-777047380591@daynix.com>\nSigned-off-by: Alex Bennée <alex.bennee@linaro.org>\n---\n accel/tcg/plugin-helpers.h | 3 ++-\n include/qemu/plugin.h | 1 +\n accel/tcg/plugin-gen.c | 43 ++++++++++++++++++++++++++++++++++----\n plugins/api.c | 12 +++++++++--\n 4 files changed, 52 insertions(+), 7 deletions(-)", "diff": "diff --git a/accel/tcg/plugin-helpers.h b/accel/tcg/plugin-helpers.h\nindex 8e685e06545..11796436f35 100644\n--- a/accel/tcg/plugin-helpers.h\n+++ b/accel/tcg/plugin-helpers.h\n@@ -1,4 +1,5 @@\n #ifdef CONFIG_PLUGIN\n-DEF_HELPER_FLAGS_2(plugin_vcpu_udata_cb, TCG_CALL_NO_RWG | TCG_CALL_PLUGIN, void, i32, ptr)\n+DEF_HELPER_FLAGS_2(plugin_vcpu_udata_cb_no_wg, TCG_CALL_NO_WG | TCG_CALL_PLUGIN, void, i32, ptr)\n+DEF_HELPER_FLAGS_2(plugin_vcpu_udata_cb_no_rwg, TCG_CALL_NO_RWG | TCG_CALL_PLUGIN, void, i32, ptr)\n DEF_HELPER_FLAGS_4(plugin_vcpu_mem_cb, TCG_CALL_NO_RWG | TCG_CALL_PLUGIN, void, i32, i32, i64, ptr)\n #endif\ndiff --git a/include/qemu/plugin.h b/include/qemu/plugin.h\nindex 7fdc3a4849f..b0c5ac68293 100644\n--- a/include/qemu/plugin.h\n+++ b/include/qemu/plugin.h\n@@ -73,6 +73,7 @@ enum plugin_dyn_cb_type {\n \n enum plugin_dyn_cb_subtype {\n PLUGIN_CB_REGULAR,\n+ PLUGIN_CB_REGULAR_R,\n PLUGIN_CB_INLINE,\n PLUGIN_N_CB_SUBTYPES,\n };\ndiff --git a/accel/tcg/plugin-gen.c b/accel/tcg/plugin-gen.c\nindex 78b331b2510..b37ce7683e6 100644\n--- a/accel/tcg/plugin-gen.c\n+++ b/accel/tcg/plugin-gen.c\n@@ -79,6 +79,7 @@ enum plugin_gen_from {\n \n enum plugin_gen_cb {\n PLUGIN_GEN_CB_UDATA,\n+ PLUGIN_GEN_CB_UDATA_R,\n PLUGIN_GEN_CB_INLINE,\n PLUGIN_GEN_CB_MEM,\n PLUGIN_GEN_ENABLE_MEM_HELPER,\n@@ -90,7 +91,10 @@ enum plugin_gen_cb {\n * These helpers are stubs that get dynamically switched out for calls\n * direct to the plugin if they are subscribed to.\n */\n-void HELPER(plugin_vcpu_udata_cb)(uint32_t cpu_index, void *udata)\n+void HELPER(plugin_vcpu_udata_cb_no_wg)(uint32_t cpu_index, void *udata)\n+{ }\n+\n+void HELPER(plugin_vcpu_udata_cb_no_rwg)(uint32_t cpu_index, void *udata)\n { }\n \n void HELPER(plugin_vcpu_mem_cb)(unsigned int vcpu_index,\n@@ -98,7 +102,7 @@ void HELPER(plugin_vcpu_mem_cb)(unsigned int vcpu_index,\n void *userdata)\n { }\n \n-static void gen_empty_udata_cb(void)\n+static void gen_empty_udata_cb(void (*gen_helper)(TCGv_i32, TCGv_ptr))\n {\n TCGv_i32 cpu_index = tcg_temp_ebb_new_i32();\n TCGv_ptr udata = tcg_temp_ebb_new_ptr();\n@@ -106,12 +110,22 @@ static void gen_empty_udata_cb(void)\n tcg_gen_movi_ptr(udata, 0);\n tcg_gen_ld_i32(cpu_index, tcg_env,\n -offsetof(ArchCPU, env) + offsetof(CPUState, cpu_index));\n- gen_helper_plugin_vcpu_udata_cb(cpu_index, udata);\n+ gen_helper(cpu_index, udata);\n \n tcg_temp_free_ptr(udata);\n tcg_temp_free_i32(cpu_index);\n }\n \n+static void gen_empty_udata_cb_no_wg(void)\n+{\n+ gen_empty_udata_cb(gen_helper_plugin_vcpu_udata_cb_no_wg);\n+}\n+\n+static void gen_empty_udata_cb_no_rwg(void)\n+{\n+ gen_empty_udata_cb(gen_helper_plugin_vcpu_udata_cb_no_rwg);\n+}\n+\n /*\n * For now we only support addi_i64.\n * When we support more ops, we can generate one empty inline cb for each.\n@@ -192,7 +206,8 @@ static void plugin_gen_empty_callback(enum plugin_gen_from from)\n gen_empty_mem_helper);\n /* fall through */\n case PLUGIN_GEN_FROM_TB:\n- gen_wrapped(from, PLUGIN_GEN_CB_UDATA, gen_empty_udata_cb);\n+ gen_wrapped(from, PLUGIN_GEN_CB_UDATA, gen_empty_udata_cb_no_rwg);\n+ gen_wrapped(from, PLUGIN_GEN_CB_UDATA_R, gen_empty_udata_cb_no_wg);\n gen_wrapped(from, PLUGIN_GEN_CB_INLINE, gen_empty_inline_cb);\n break;\n default:\n@@ -588,6 +603,12 @@ static void plugin_gen_tb_udata(const struct qemu_plugin_tb *ptb,\n inject_udata_cb(ptb->cbs[PLUGIN_CB_REGULAR], begin_op);\n }\n \n+static void plugin_gen_tb_udata_r(const struct qemu_plugin_tb *ptb,\n+ TCGOp *begin_op)\n+{\n+ inject_udata_cb(ptb->cbs[PLUGIN_CB_REGULAR_R], begin_op);\n+}\n+\n static void plugin_gen_tb_inline(const struct qemu_plugin_tb *ptb,\n TCGOp *begin_op)\n {\n@@ -602,6 +623,14 @@ static void plugin_gen_insn_udata(const struct qemu_plugin_tb *ptb,\n inject_udata_cb(insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_REGULAR], begin_op);\n }\n \n+static void plugin_gen_insn_udata_r(const struct qemu_plugin_tb *ptb,\n+ TCGOp *begin_op, int insn_idx)\n+{\n+ struct qemu_plugin_insn *insn = g_ptr_array_index(ptb->insns, insn_idx);\n+\n+ inject_udata_cb(insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_REGULAR_R], begin_op);\n+}\n+\n static void plugin_gen_insn_inline(const struct qemu_plugin_tb *ptb,\n TCGOp *begin_op, int insn_idx)\n {\n@@ -721,6 +750,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb)\n case PLUGIN_GEN_CB_UDATA:\n plugin_gen_tb_udata(plugin_tb, op);\n break;\n+ case PLUGIN_GEN_CB_UDATA_R:\n+ plugin_gen_tb_udata_r(plugin_tb, op);\n+ break;\n case PLUGIN_GEN_CB_INLINE:\n plugin_gen_tb_inline(plugin_tb, op);\n break;\n@@ -737,6 +769,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb)\n case PLUGIN_GEN_CB_UDATA:\n plugin_gen_insn_udata(plugin_tb, op, insn_idx);\n break;\n+ case PLUGIN_GEN_CB_UDATA_R:\n+ plugin_gen_insn_udata_r(plugin_tb, op, insn_idx);\n+ break;\n case PLUGIN_GEN_CB_INLINE:\n plugin_gen_insn_inline(plugin_tb, op, insn_idx);\n break;\ndiff --git a/plugins/api.c b/plugins/api.c\nindex 5521b0ad36c..ac39cdea0b3 100644\n--- a/plugins/api.c\n+++ b/plugins/api.c\n@@ -89,7 +89,11 @@ void qemu_plugin_register_vcpu_tb_exec_cb(struct qemu_plugin_tb *tb,\n void *udata)\n {\n if (!tb->mem_only) {\n- plugin_register_dyn_cb__udata(&tb->cbs[PLUGIN_CB_REGULAR],\n+ int index = flags == QEMU_PLUGIN_CB_R_REGS ||\n+ flags == QEMU_PLUGIN_CB_RW_REGS ?\n+ PLUGIN_CB_REGULAR_R : PLUGIN_CB_REGULAR;\n+\n+ plugin_register_dyn_cb__udata(&tb->cbs[index],\n cb, flags, udata);\n }\n }\n@@ -109,7 +113,11 @@ void qemu_plugin_register_vcpu_insn_exec_cb(struct qemu_plugin_insn *insn,\n void *udata)\n {\n if (!insn->mem_only) {\n- plugin_register_dyn_cb__udata(&insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_REGULAR],\n+ int index = flags == QEMU_PLUGIN_CB_R_REGS ||\n+ flags == QEMU_PLUGIN_CB_RW_REGS ?\n+ PLUGIN_CB_REGULAR_R : PLUGIN_CB_REGULAR;\n+\n+ plugin_register_dyn_cb__udata(&insn->cbs[PLUGIN_CB_INSN][index],\n cb, flags, udata);\n }\n }\n", "prefixes": [ "v2", "36/43" ] }