From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-199.mta1.migadu.com [95.215.58.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EA96543A7E3 for ; Fri, 4 Sep 2026 08:44:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788511466; cv=none; b=ek3ChHPwb0z0KgOKzbNcLsyBJbNuAnz3pAyv4FZoYDbIupPqVWEICGp7nujeVEEmcX52nI5BAn58gkRSkm57NWfU1rAdx8UCtwjC8pSaPP9MbFzbpjeTNmsuVF5MmWIhM0h19CUMkrel6Jb8ZdRl1m7b+B49bsA0O3qp9tGmMH4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788511466; c=relaxed/simple; bh=xPYwvZRikG8q9ZyxWeu7lxa0JAUe+/NgRurcSzEGzog=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HcNkzG5HnBuKCEEbC6GuqfErY1Zx6IGcd9vCc0okUhhc3zDvFs0RW+RcsBFVeXNKGlDaCBZKsWQNNQ7YwnE4aPYHAV4sQD8YBG/YpK5OrnIcH7zINEsQYV/9ZlgofEFaAwkt5BODXfLuVwVPVZY0lkMifkSzeqoL1KAM/x392iw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=wCea4xlF; arc=none smtp.client-ip=95.215.58.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="wCea4xlF" X-Envelope-To: bpf@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=xPYwvZRikG8q9ZyxWeu7lxa0JAUe+/NgRurcSzEGzog=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1788511462; v=1; x=1789116262; b=wCea4xlFPFXS9iryzoxD22+Rs3MizsGQc7QlUuf7MhSyLlniVY2il/odR6wbbgiGBc0dVHEp 5eox0lRbfTmIN7XykVpF9KKaisZhsV3eSIhA/yOMpINz0fSRiV5ST0WG3qSHQzjBWl8qRrV+kkd XwMk3f8tMrH7yE7cRhlCXV0g= X-Envelope-To: bpf@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id a5cf789f7f263980; Fri, 04 Sep 2026 08:44:22 +0000 X-Mizu-Trace-ID: a5cf789f7f263980 X-Migadu-Flow: FLOW_OUT Message-ID: <46b5b4b7-4c5c-43ab-bd2a-66ab6e860914@linux.dev> Date: Fri, 4 Sep 2026 14:14:16 +0530 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC bpf-next 3/6] bpf: support low-32 subreg scalar linking for zero-extending movs To: Eduard Zingerman , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, memxor@gmail.com Cc: martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org, emil@etsalapatis.com, ihor.solodrai@linux.dev, john.fastabend@gmail.com, shuah@kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20260814231945.3884596-1-vineet.gupta@linux.dev> <20260814231945.3884596-4-vineet.gupta@linux.dev> <3409369bebc67b512257583556b02104710fcd1c.camel@gmail.com> From: Vineet Gupta Content-Language: en-US In-Reply-To: <3409369bebc67b512257583556b02104710fcd1c.camel@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 8/19/26 9:37 AM, Eduard Zingerman wrote: > On Fri, 2026-08-14 at 16:19 -0700, Vineet Gupta wrote: > > ... > >>  include/linux/bpf_verifier.h | 10 ++++ >>  kernel/bpf/states.c          | 23 ++++++++- >>  kernel/bpf/verifier.c        | 91 ++++++++++++++++++++++++++++++++---- >>  3 files changed, 114 insertions(+), 10 deletions(-) > Also, would be nice to reflect ZEXT flag when printing the register in log.c. OK.