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Tue, 24 Feb 2026 20:09:54 +0000 Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 61OK9ovg40698238 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 24 Feb 2026 20:09:50 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4C17E20043; Tue, 24 Feb 2026 20:09:50 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C09C520040; Tue, 24 Feb 2026 20:09:48 +0000 (GMT) Received: from ltcrain4-lp15.ltc.tadn.ibm.com (unknown [9.5.7.39]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 24 Feb 2026 20:09:48 +0000 (GMT) From: adubey@linux.ibm.com To: linuxppc-dev@lists.ozlabs.org Cc: bpf@vger.kernel.org, hbathini@linux.ibm.com, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, maddy@linux.ibm.com, Abhishek Dubey Subject: [PATCH 1/4] powerpc64/bpf: Add support for instruction array Date: Tue, 24 Feb 2026 20:09:29 -0500 Message-ID: <20260225010950.20218-2-adubey@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260225010950.20218-1-adubey@linux.ibm.com> References: <20260225010950.20218-1-adubey@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=TNRIilla c=1 sm=1 tr=0 ts=699e0593 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=VnNF1IyMAAAA:8 a=lbH7urq3qjFNCEvrvYgA:9 X-Proofpoint-GUID: qXh2ApkJQxJGMx2ivObjJ2Kf3lp2Uz7L X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjI0MDE3MyBTYWx0ZWRfX6dNNfjV7efYg bxA89sX/nuPAi7w8SoNS/F41o2mly6XFXvPIxpASTT6zIlnexgXEqmp1MR4COxMMQH5P6P+YPQR bC+QZcCuabPg5h4RmvpOtsRgJD0dojhWqSGMGSnBVE5aLQPZfvxgr5v+Uv7qecCs80Hv5KVfxkv 6lPxmkA8kKese/sx7v1+wOgtfwWWW8VczJJDyRI2/+yQT3vddNUypArfq1mPmnZoUVpJf5Ieaot 9Gz+NoDOoaBMk7G3cP9RrAq+kgkllJrpm3Ah/JD74UgkhRfxiBS4YU2zrXjzDpHZvDKZc/DaDgc lJdrJPWRmXATbw37tIfv5phAjahNgkRETNK7vjeOsex7Y/9FHwPKegTYXgUvwBeiDaBT1YxiPl3 DvyuO+H+MyvTkQHD9L3UR7LrkYpRkzIzfzh5dO/aY56q2o/4o31iWmE5cY8dW9lrBfn3maY2bZu fbHFupbi9RUxkb08j3g== X-Proofpoint-ORIG-GUID: qXh2ApkJQxJGMx2ivObjJ2Kf3lp2Uz7L X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-24_02,2026-02-23_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 adultscore=0 priorityscore=1501 impostorscore=0 spamscore=0 clxscore=1015 bulkscore=0 lowpriorityscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602240173 From: Abhishek Dubey On loading the BPF program, the verifier might adjust/omit some instructions. The adjusted instruction offset is accounted in the map containing original instruction -> xlated mapping. This patch add ppc64 JIT support to additionally build the xlated->jitted mapping for every instruction present in instruction array. This change is needed to enable support for indirect jumps, added in a subsequent patch. Invoke bpf_prog_update_insn_ptrs() with offset pair of xlated_offset and jited_offset. The offset mapping is already available, which is being used for bpf_prog_fill_jited_linfo() and can be directly used for bpf_prog_update_insn_ptrs() as well. Additional details present at: commit b4ce5923e780 ("bpf, x86: add new map type: instructions array") Signed-off-by: Abhishek Dubey --- arch/powerpc/net/bpf_jit_comp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index ebd21c75ce47..04f51f2c817c 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -379,6 +379,12 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) jit_data->hdr = hdr; } + /* + * The bpf_prog_update_insn_ptrs function expects addrs to + * point to the first byte of the jitted instruction. + */ + bpf_prog_update_insn_ptrs(fp, addrs, fimage); + out: if (bpf_blinded) bpf_jit_prog_release_other(fp, fp == org_fp ? tmp_fp : org_fp); -- 2.52.0