{"id":2234697,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2234697/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260507234413.643512-52-richard.henderson@linaro.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/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":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260507234413.643512-52-richard.henderson@linaro.org>","list_archive_url":null,"date":"2026-05-07T23:44:04","name":"[v4,51/60] target/arm: Enable FEAT_FP8DOT4, FEAT_SSVE_FP8DOT4 for -cpu max","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"f1784eb3f646472d72d27b8e5874b16eb6ad44f8","submitter":{"id":72104,"url":"http://patchwork.ozlabs.org/api/1.2/people/72104/?format=json","name":"Richard Henderson","email":"richard.henderson@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260507234413.643512-52-richard.henderson@linaro.org/mbox/","series":[{"id":503296,"url":"http://patchwork.ozlabs.org/api/1.2/series/503296/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=503296","date":"2026-05-07T23:43:14","name":"target/arm: Implement FEAT_FP8","version":4,"mbox":"http://patchwork.ozlabs.org/series/503296/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2234697/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2234697/checks/","tags":{},"related":[],"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=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=ZYDPOqrt;\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-oa1-x2f.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":"Signed-off-by: Richard Henderson \n---\n target/arm/tcg/cpu64.c | 2 ++\n docs/system/arm/emulation.rst | 2 ++\n 2 files changed, 4 insertions(+)","diff":"diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c\nindex 93cd7ee1a6..6dec7e045d 100644\n--- a/target/arm/tcg/cpu64.c\n+++ b/target/arm/tcg/cpu64.c\n@@ -1377,6 +1377,7 @@ void aarch64_max_tcg_initfn(Object *obj)\n SET_IDREG(isar, ID_AA64DFR0, t);\n \n t = GET_IDREG(isar, ID_AA64SMFR0);\n+ t = FIELD_DP64(t, ID_AA64SMFR0, SF8DP4, 1); /* FEAT_SSVE_FP8DOT4 */\n t = FIELD_DP64(t, ID_AA64SMFR0, SF8FMA, 1); /* FEAT_SSVE_FP8FMA */\n t = FIELD_DP64(t, ID_AA64SMFR0, F32F32, 1); /* FEAT_SME */\n t = FIELD_DP64(t, ID_AA64SMFR0, BI32I32, 1); /* FEAT_SME2 */\n@@ -1396,6 +1397,7 @@ void aarch64_max_tcg_initfn(Object *obj)\n t = GET_IDREG(isar, ID_AA64FPFR0);\n t = FIELD_DP64(t, ID_AA64FPFR0, F8E5M2, 1); /* FEAT_FP8 */\n t = FIELD_DP64(t, ID_AA64FPFR0, F8E4M3, 1); /* FEAT_FP8 */\n+ t = FIELD_DP64(t, ID_AA64FPFR0, F8DP4, 1); /* FEAT_FP8DOT4 */\n t = FIELD_DP64(t, ID_AA64FPFR0, F8FMA, 1); /* FEAT_FP8FMA */\n t = FIELD_DP64(t, ID_AA64FPFR0, F8CVT, 1); /* FEAT_FP8 */\n SET_IDREG(isar, ID_AA64FPFR0, t);\ndiff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst\nindex a6b48f9c60..bee4e36dc6 100644\n--- a/docs/system/arm/emulation.rst\n+++ b/docs/system/arm/emulation.rst\n@@ -75,6 +75,7 @@ the following architecture extensions:\n - FEAT_FP (Floating Point extensions)\n - FEAT_FP16 (Half-precision floating-point data processing)\n - FEAT_FP8 (FP8 convert instructions)\n+- FEAT_FP8DOT4 (FP8 4-way dot product to single-precision instructions)\n - FEAT_FP8FMA (FP8 multiply-accumulate to half-precision and single-precision instructions)\n - FEAT_FPAC (Faulting on AUT* instructions)\n - FEAT_FPACCOMBINE (Faulting on combined pointer authentication instructions)\n@@ -160,6 +161,7 @@ the following architecture extensions:\n - FEAT_SME_F64F64 (Double-precision floating-point outer product instructions)\n - FEAT_SME_I16I64 (16-bit to 64-bit integer widening outer product instructions)\n - FEAT_SME_LUTv2 (Lookup table instructions with 4-bit indices and 8-bit elements)\n+- FEAT_SSVE_FP8DOT4 (SVE2 FP8 4-way dot product to single-precision instructions in Streaming SVE mode)\n - FEAT_SSVE_FP8FMA (SVE2 FP8 multiply-accumulate to half-precision and single-precision instructions in Streaming SVE mode)\n - FEAT_SVE (Scalable Vector Extension)\n - FEAT_SVE_AES (Scalable Vector AES instructions)\n","prefixes":["v4","51/60"]}