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([2620:10d:c090:500::6:84a4]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-141388b2554sm18518227c88.14.2026.08.14.15.24.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Aug 2026 15:24:40 -0700 (PDT) Message-ID: <94765f6dd63a1834793a32965ea3e0ec6e4eb567.camel@gmail.com> Subject: Re: [PATCH bpf-next v5 01/11] bpf: Factor check_global_ret_scalar_reg() out of the global return check From: Eduard Zingerman To: Yonghong Song , bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , kernel-team@fb.com Date: Fri, 14 Aug 2026 15:24:38 -0700 In-Reply-To: <20260813200215.1993264-1-yonghong.song@linux.dev> References: <20260813200210.1991507-1-yonghong.song@linux.dev> <20260813200215.1993264-1-yonghong.song@linux.dev> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.60.2 (3.60.2-1.fc44) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2026-08-13 at 13:02 -0700, Yonghong Song wrote: > check_global_subprog_return_code() verifies that a global subprogram > returns void, an arena pointer, or register R0 holding a scalar value. > Later patches in this series add 16-byte aggregate return support, whose > second half is returned in R2 and needs the same validation. >=20 > Factor the per-register check into check_global_ret_scalar_reg(env, regno= ) > so that it can be reused for R2. No functional change. >=20 > Signed-off-by: Yonghong Song > --- Acked-by: Eduard Zingerman ...