From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f180.google.com (mail-pl1-f180.google.com [209.85.214.180]) (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 0051832FA1B for ; Fri, 31 Jul 2026 22:01:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785535267; cv=none; b=K8WnYBd23U3EobMshJJkwJB7l+l7WgNzN6ax4QQCqFyWHtJBNM7RsqTgCAyk/OWi7aZyVS6Zdipioi5SIbSRfiDVUVXtn4XxndFOJkQDcsy4pwocwD8PsJHPVDZLXt8rF4ilFs8NkL1+OUbijEkuoZjBDSE+vvx2G4hMdkv7Q18= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785535267; c=relaxed/simple; bh=RJZ1rlFHf6Wtd52ZhwYrZmFucK2tPKKMxzDlcmG6gLU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cC32RKhao7i6zNrt+K1s/+9cmqe97uYy6TJx0WuIV/upMqujnxLt7hheqSKCl55tqrSmn3Ixjp71iFUtbRLwFag5MRJVqJBqXOuML5/Uj9UZwIctDuLZjSIe+MP+O9pB+84VogzP4qvWJv/PqOOKRRbyv3rM0Ge7Tohl9ASSd5o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=inAXsZpg; arc=none smtp.client-ip=209.85.214.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="inAXsZpg" Received: by mail-pl1-f180.google.com with SMTP id d9443c01a7336-2cea3004256so17345575ad.0 for ; Fri, 31 Jul 2026 15:01:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785535265; x=1786140065; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=bvrQ6elHBjzw1ZZIATnQHAMJ2uvLdDDK2nT5pKMJu90=; b=inAXsZpg7rSfH1DiRJO38JoMFw/MwRLgTogOJ0Vq0cdhFyUSs4Ga00KeNNzCdUCT7C Q/SeZ6JPOg1LlbcxyvJvtA8lmL+lo0IaDRi8XC2dJk2tuSSlNp8fi8hyTInHKEbj9FKl FGLb/VJFfKsPp3MNzwL7JrgL2EhYIhcAGT9yGi02JcHhr3xS2dS7cp6P7T/tqLIxbDvK /95VQ48aSLJEU0YiMeI8OcIvzOup7pQNHluB/EwX/4foNwQ4PIzS59L/koa9SRLt7VUu GLPHsEnfwoshcrlSaV3PV8kdItALA29eEn9LIM5zUwiB5EkZFfjLKm6mliJ2N9Vgl1wu 3CRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785535265; x=1786140065; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=bvrQ6elHBjzw1ZZIATnQHAMJ2uvLdDDK2nT5pKMJu90=; b=bGnlmxMuL3ihJeyMLsI8ql64n/4Sc2WT7J7q959RpBdnok7OnT1X1SrbD3mgw5YBYZ tbNKikKjXTkKQlz1180nuZr6zIpiMIEx59uusOT6NQLldQvacagYJWkW88OoKMxPDBZC 2id+crdWsFTwsvwcs917o/Rm25Kt6vM4zkeEdunl5dImovGLHP53OPLQG7FK16Tdz0+7 1qcNUqGY9XCRr7UBlWCUKbKRT0BWS7ohNty/syJIcbcYmxMBDkrl+SRmZlU408trKZzH 4BLMUJWAd/XgqSgxWjXWlKn4IuWgAnFywaDD5qjy1WFjb5lkoCw/U+jJCUAqP4O48+lW yl6Q== X-Forwarded-Encrypted: i=1; AHgh+Rrop9/blDjln+5yVH4dg12af7M3cE5BQk8FmzxzhXNw1EwtfDkHvPxH0G4+VFrrFhV8s3nLX4Kh+/nrhg==@vger.kernel.org X-Gm-Message-State: AOJu0YyWzZC57miL7fioUubnkcVUEYjgxbusZpfP6OMEK0Rw8A89YSZM g6zQ9tycEtVALfZrSMGxzu55m5LvWJBC9hTiLYEbaWXAi8CNKW6iQ9rl X-Gm-Gg: AR+sD10BOYoW9yQW45PycxMX4pu5tdVZohJ/U4dhp6RrSepm/8+/Y1eOyCPSPgO+hSX +iERYXJk5d1PaiTd/Ni2YU6F03/vzUV1j7WMKBWRyTTgRbOtyahREN1VPca0/5rziFzoZs1bHwb xr6kbJ/WKtXwKfGnUtLzxsK71qYIoX3pzV6TJEXdiQAAuMrY3W+W4SU7oqU994dLNSxQyhqQeNi X8ZpoHD/mw+frlQ+zFBHVwv32yoyrKT36tzF/JaIZwOI/WChiQe3awwUZsKyKcTCvLD4Yi2cnKy R3YKGw5Pgi191dqeGBYpdhKOyByItatvNcvjpHKjygjlroBvdAtiJmWNrnBTC9IDufi7j39eaJg IJhrSLofvx+uSWajzmhjc05ZwzRwNI94K577J6CPaTMexWGWY4mzbNwiVm4MRJeUFKBMmjiDJmb XIo3xiUMBNsdLsfo7SrBjQLnHtLsScWLyxV8Bwx3noyhFjPCsD7L1LKdWswoKfIPRd9vtjfHmZr dU1NCkI X-Received: by 2002:a17:903:1110:b0:2ca:c01e:8837 with SMTP id d9443c01a7336-2d052428e6dmr13323565ad.24.1785535265148; Fri, 31 Jul 2026 15:01:05 -0700 (PDT) Received: from devvm29614.prn0.facebook.com ([2a03:2880:ff:7::]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d04b121751sm10403345ad.65.2026.07.31.15.01.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 31 Jul 2026 15:01:03 -0700 (PDT) Date: Fri, 31 Jul 2026 15:01:01 -0700 From: Bobby Eshleman To: Jakub Kicinski Cc: Donald Hunter , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Andrew Lunn , Gerd Hoffmann , Vivek Kasireddy , Sumit Semwal , Christian =?iso-8859-1?Q?K=F6nig?= , Shuah Khan , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-kselftest@vger.kernel.org, sdf@fomichev.me, razor@blackwall.org, daniel@iogearbox.net, almasrymina@google.com, matttbe@kernel.org, skhawaja@google.com, dw@davidwei.uk, Joe Damato , Bobby Eshleman Subject: Re: [PATCH net-next v6 3/3] selftests/net: devmem.py: add check_rx_large_niov Message-ID: References: <20260724-tcpdm-large-niovs-v6-0-7975f62cdfbb@meta.com> <20260724-tcpdm-large-niovs-v6-3-7975f62cdfbb@meta.com> <20260729191649.55ab7942@kernel.org> <20260730151433.6f71258e@kernel.org> Precedence: bulk X-Mailing-List: linux-media@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: <20260730151433.6f71258e@kernel.org> On Thu, Jul 30, 2026 at 03:14:33PM -0700, Jakub Kicinski wrote: > On Thu, 30 Jul 2026 14:39:37 -0700 Bobby Eshleman wrote: > > Poking around, it looks like 231.1.167.0 and above should support > > everything, so fw should be okay AFAICT. > > > > Looks like the config is missing CONFIG_NET_DEVMEM and CONFIG_UDMABUF? > > Ah, damn, you're right. I grepped for DEVMEM and didn't look closely on > a hit. Turns out there's a non-NET DEVMEM, too. > > Could you send a patch to add the missing config options to > tools/testing/selftests/drivers/net/hw/config ? > > Can be separate or part of this series, doesn't matter. So NET_DEVMEM and UDMABUF both depend on DMA_SHARED_BUFFER, which is not user-settable (selected by DMABUF_HEAPS and SYNC_FILE, for example). Pretty sure UDMABUF is supposed to select it, not depend on. Documentation/driver-api/dma-buf.rst says any "exporter" should select it, so I'm going to send that patch over there. Meanwhile, do we want drivers/net/hw/config to workaround by carrying something like SYNC_FILE or DMABUF_HEAPS, or wait and see about the udmabuf kconfig change? Best, Bobby