From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 963C22D3A69; Mon, 13 Apr 2026 12:33:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776083607; cv=none; b=QkSrIlzotBDQNvtn4WWH9a+wPr4eTgyI379h6F2qKSTKOKMnsVXbM51DNYkeiFJTT4Ucs5gop4HoKO7o0PJe3z9WNThdMs/lb/F6F0JLFDRtsQXWKtyU+L4DHupzCddjg9uz4IXLddsnypm3dvx8oIJTRN3AIc3u6I+anA16uGw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776083607; c=relaxed/simple; bh=wDEfO/xa61/CEJ6jniOSKCwWHmjQlG9qEwI4fGV3AGc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=aZ4FJkvoqjGvAj7XPxEIsrsHIpMUpIwC5qAE2pYXT0DyjYqwehIcGqDKrW0w+edasgTrB5xobckb3r2Ov9fkG4ZtjhYqMffHpaCOo/HLeeDCuIYgZG5Cjnr5QERC/5i6EmlUGULEIuF1CHRh2eXu6GerGhh6gqlQV9pHXPMmT0M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IRzYJPLt; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IRzYJPLt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2E2CC2BCAF; Mon, 13 Apr 2026 12:33:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776083607; bh=wDEfO/xa61/CEJ6jniOSKCwWHmjQlG9qEwI4fGV3AGc=; h=From:To:Cc:Subject:Date:From; b=IRzYJPLtqyLTFDkW/E3erTl2pGBOqmAeso6+BBxzRo34O4QBovomeWcfquiET/MKM p5ED9lkTfMffRJhzYHIWthsOtj4LLQmJZ4hZUxXOJMOehclBB9EXYql4RxVLEpWzEe GhuqetgomPeaWQX/4PJnqIcZGdNCfBwbc6/SjjeOXRX0WYWdXvwMRNPqo6hWCpnury FyYY9tTrqHh0m6+YoGqQNa8B9x/LHqB6dtXzLCg+X3Xsc44ejCjWoB8Gz/VvWykmnI S+W1HNlVKveGdHiBri6PUzAqjbDo5M6M2Ln0WCVUmbD6q4KxUwOpdmZM/3T30wltqy P7sNedl2CTHPw== From: Puranjay Mohan To: bpf@vger.kernel.org Cc: Puranjay Mohan , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Kumar Kartikeya Dwivedi , Song Liu , Yonghong Song , Jiri Olsa , Xu Kuohai , Catalin Marinas , Will Deacon , Luke Nelson , Xi Wang , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Pu Lehui , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH bpf-next 0/2] bpf, arm64/riscv: Remove redundant icache flush after pack allocator finalize Date: Mon, 13 Apr 2026 05:32:53 -0700 Message-ID: <20260413123256.3296452-1-puranjay@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When the BPF prog pack allocator was added for arm64 and riscv, the existing bpf_flush_icache() calls were retained after bpf_jit_binary_pack_finalize(). However, the finalize path copies the JITed code via architecture text patching routines (__text_poke on arm64, patch_text_nosync on riscv) that already perform a full flush_icache_range() internally. The subsequent bpf_flush_icache() repeats the same cache maintenance on the same range. Remove the redundant flush and the now-unused bpf_flush_icache() definitions on both architectures. Puranjay Mohan (2): bpf, arm64: Remove redundant bpf_flush_icache() after pack allocator finalize bpf, riscv: Remove redundant bpf_flush_icache() after pack allocator finalize arch/arm64/net/bpf_jit_comp.c | 11 ----------- arch/riscv/net/bpf_jit.h | 5 ----- arch/riscv/net/bpf_jit_core.c | 7 ------- 3 files changed, 23 deletions(-) base-commit: 71b500afd2f7336f5b6c6026f2af546fc079be26 -- 2.52.0