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[61.230.38.200]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-364bdf54203sm11772435a91.7.2026.05.03.10.52.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 May 2026 10:52:44 -0700 (PDT) Date: Mon, 4 May 2026 01:52:40 +0800 From: Kuan-Wei Chiu To: Daniel Palmer Cc: geert@linux-m68k.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org, jserv@ccns.ncku.edu.tw, eleanor15x@gmail.com, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, bpf@vger.kernel.org Subject: Re: [PATCH bpf-next] m68k, bpf: Add initial BPF JIT compiler support Message-ID: References: <20260429124046.3480827-1-visitorckw@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Hi Daniel, On Wed, Apr 29, 2026 at 10:51:58PM +0900, Daniel Palmer wrote: > Hi Kuan-Wei, > > On Wed, 29 Apr 2026 at 21:41, Kuan-Wei Chiu wrote: > > > > Add a BPF JIT compiler for the m68k architecture. > > > > The JIT generates m68k machine code targeting m68020+ processors. It > > currently excludes 68000/68010 and coldfire processors, as it relies on > > 32 bit branch displacements (b.l) to handle large bpf programs. > > > > Tested with the test_bpf.ko: > > test_bpf: Summary: 1053 PASSED, 0 FAILED, [1041/1041 JIT'ed] > > test_bpf: test_tail_calls: Summary: 10 PASSED, 0 FAILED, [10/10 JIT'ed] > > > > Signed-off-by: Kuan-Wei Chiu > > Cool! Which CPUs did you test on? I guess 040 that is in QEMU? Yes. > I'll check on real 030, 040 and 060 machines a bit later. Thanks! I really appreciate your help with both u-boot and the kernel. > Since you are doing code generation for m68k now maybe you could help > me when I resend my patches for runtime consts support? [0] Sure, I'll take a look at the patch. Feel free to Cc me on any future patches if you'd like me to help with reviews. Regards, Kuan-Wei > > Thanks, > > Daniel > > 0 - https://lore.kernel.org/linux-m68k/20251127000505.2117956-1-daniel@thingy.jp/