From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-186.mta1.migadu.com (out-186.mta1.migadu.com [95.215.58.186]) (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 A67C5200AE for ; Thu, 22 Aug 2024 01:23:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.186 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289839; cv=none; b=HC4ZTDWpcpIfT/2F+zqOWCz859ttdHV042euctAnV8ymmsHKKeZE1VsTmkYI2XtzkVLhUCidvZXSX3Ar7XmNpnVofN3VFRXLiy0vcXK4uwKZKMbK3iP50URWNjLi7OU60FbqXkMPjDzM3lenm7Iv1A+qOpBvJtom0PqFUWPeTYQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289839; c=relaxed/simple; bh=sLTA1jiM4KpagzNucb/fOlP3L5JzZW/7DFegM7+ZkG8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=dza+fLnBsHBSaCZ1UHw7n1j+A7zAA9WK8nSrpSbdv7RB4Aj3Qiv1PArz52p7twPcb/Xm1MfeFs7vU0xYjiohC9noqhcLAfT1m5bohbo+n4Q/WWr88WZ1T2gga2BJ2uxixZP/I5ukNmBc9IvOUzLGsz4cECMwAdlv0IArSXAT08Y= 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=AtoddckQ; arc=none smtp.client-ip=95.215.58.186 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="AtoddckQ" Message-ID: <937e36c2-5789-4fc3-834f-1e482ba563f2@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1724289835; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sLTA1jiM4KpagzNucb/fOlP3L5JzZW/7DFegM7+ZkG8=; b=AtoddckQU2kKrSPHnauTIPv+s7ik9vfyvX7NmnYGEgbemuJAW7KKzsNh/4zlFzNgd2c36Z w7936KtcYq6MRSgSKPMLHh8ZDYtuFp0t0iUh+Jga7eKQhXO0U9XO6yWhHq9uH7d12fhvWe yBZDoC63H4jCyK/UwQoDaqM/Zry03kU= Date: Wed, 21 Aug 2024 18:23:51 -0700 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH bpf-next v2 4/5] bpf: allow bpf_fastcall for bpf_cast_to_kern_ctx and bpf_rdonly_cast Content-Language: en-GB To: Eduard Zingerman , bpf@vger.kernel.org, ast@kernel.org Cc: andrii@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, kernel-team@fb.com, jose.marchesi@oracle.com References: <20240817015140.1039351-1-eddyz87@gmail.com> <20240817015140.1039351-5-eddyz87@gmail.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Yonghong Song In-Reply-To: <20240817015140.1039351-5-eddyz87@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT On 8/16/24 6:51 PM, Eduard Zingerman wrote: > do_misc_fixups() relaces bpf_cast_to_kern_ctx() and bpf_rdonly_cast() > by a single instruction "r0 = r1". This follows bpf_fastcall contract. > This commit allows bpf_fastcall pattern rewrite for these two > functions in order to use them in bpf_fastcall selftests. > > Signed-off-by: Eduard Zingerman Acked-by: Yonghong Song