From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.214.181 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793263890; b=gzRZ+d8FEyLREPi9usvPijpSa6WzxuRw3tiQMBGP7h6bazhpZTcTb8tsTueM41MqykZ6 YI63IHHb60Zetq8wgT0xZZt8ZZWU+mb05u8IHimjr0Y1dEi/j5Du9dQ9LBywtxRuiOAc4 ENTfodhZj2nSeKE4lwLhQS2yl6LjRxDb3Oku8hwavCkeVth+jxxDtRtl47RahpG/Fd9A2 fY2RhxNDSbPnBuVxmSxVhTg1raL6wqoLmO5/G/gHz1nJ36GMSGKv0XGjgENKt9Yvz0D80 C6XkW09YUaNa+kn7W0GZkKVnVzUxzJsCvj/Ytpw1a1YAlIo02tyYiCUTmGoE0oXm1rw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793263890; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=BRslTI0ynJSL8rFIMfwDZ46YUeqzoiUybS2SxS5DQ24=; b=hJlq7UnGN/m6vuqAq8d5qBfkAupy+5i2aDZME9bI8Mx6T6M6Va4iW4QNv4b0Xih7Fi4X PSQQ6PJqxAmSMlcGPGXa0YSRydHZ6HO+/hA5HaRISbmsFhLSj5qWfpxyKx8B3YONLTg5B bBUMVNg2NyBOMvW+8uBZq6/07R4tphaTp3uZMlKoVZN4Zdi/hGXiyLK5zqRsKkzpd2URb ca+iDkC42dy8C0f36Ru5entFZEKQCtDOZyWwIQ0sI9+4QyP/SfJi+qleH3+fJKDDDsDKK dvTQmUzUGkT8D0kuluve/RvhHEWm0B5RInAYejF5j28CfJFzAO5GzpdI7WBWjcxQUog== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=u9TG9NWp; arc=none smtp.remote-ip=209.85.214.181 Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 14684606A334 for ; Thu, 29 Oct 2026 08:51:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 14684606A334 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, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=u9TG9NWp Received: by mail-pl1-f181.google.com with SMTP id d9443c01a7336-2ea138a3497so10906775ad.2 for ; Thu, 29 Oct 2026 01:51:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1793263889; x=1793868689; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=BRslTI0ynJSL8rFIMfwDZ46YUeqzoiUybS2SxS5DQ24=; b=u9TG9NWpncJ1DYHeAj55umU+D6rrfVbS+y4acGTHjJyuD4H4ReE6aNBEXb1xhLNQuv BC1kNjTooMferrTy0v7iQ1lAeBgEwp501Y/ePL+r2eitJywMeXZXPuu/dcUPgiLwaJL2 5BfN6F2u/LoFVNT/qjPeo1z28eE9k2+0Psh2sGunFNelEQkJutJLjwL+eD94/RRVQMFu B+uy3jLOQIK22woOMmkruPOJAqiQm5ZxfkNatDlJXS3gJSHxkjemxzzv4s/hGFP9hv6W oH4aoXIUUuRYQeNdAOgTXIMM0XQGmS7X5Tu/WfDh/qV0GJMJUmQ58LFIjOrmAeiYaTYH MEHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1793263889; x=1793868689; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=BRslTI0ynJSL8rFIMfwDZ46YUeqzoiUybS2SxS5DQ24=; b=UciClEzmz5qMxkWZEZ+gQxSA4x4z1Ez16KmrdZ1mF4A0nptBgi1f8wbWGI25dUQad0 C6KYkn63jPHDDj1KEWy9A6pHHI4FHI3lN20ThmARYH32A1ehdhAK7ND21SKwhQr8uPzC 8glMKXplrVNwuIuTn3CXcNGRf4DHmB8a9IQTHsGAGF/RZrBQOK//JlGdK1icLna5DNeH cH/jKfJTbQU7cTYaLD0pg/Uk9rB29QFEaneohJIlEyMP0p+XjRvu008WIP8UN9+l5Aj1 /563XE9Xqfz0rBNBYzpH1ulRyE9uXYzYezh8sMGpcu20ose7/uIWdcxyIldY0GUtrUTF QybA== X-Forwarded-Encrypted: i=1; AKwUvBwD8gw2kc4y+bqhV0zagTOWj7b+en66warWcRato63wPa/zpK1PDwk3oNK4H8Nq7On9FgpTyV/KnU9NzcZUlA==@lists.linux.dev X-Gm-Message-State: AFq9FYJk8bbsHXak7AzPWtJJ701+TOC8ePIDodKG/LRaJgYkZNlxuJcr PzW42dTfVbjh54FjaGwvWZ+ZuH4udVqXU4UqVMnraWSaVuYNn9Q6eh79 X-Gm-Gg: AYBFou3ZARKo7N3p0nIgSPO00MDtJ3TtFpNvOlAR8XOD3c7C5o+ax5rLfiNXtmWAOmg Y7pgUu9qXRgNvvfWftsrCQWHcaxWYZnrAWElZRsjJqq7/5fJitcmDhVoS8jLDpIX81/MIaHwBYT 6F5IE6CYBso+MhWi+h0738U2E2A/Qdh8ofCKDzsi2zzcXtUtOQ9LyXdhI0Ou1vS8akXivO3zgvI DBKEJjsHWcbpQiPK0eaUpRlIXiPLCWv0uoif/P1haZCi02GJaAJCqTH9ODhwjNOXCgXgjLCLz06 fgCGDxVlJ5L10DmPxMQVvigSut64nJYcgscrBOR4pNMHZUfDe57XUND4fnupgyqLVc2ybfArs2z hG/wCnOaLczuJsuICiKnA5OkJ+lm93mMQ77vgZo7zmCrYOMJO5IoroWLUdNe5K0W89kQNHDxzsa BwEuACOfT0qCK3BCRUK7b2RummYfSy3fwclRuz2qrxBUArZdYid2Kf7mbE9+Lre0gECogQhgEJt nTON4QZxHLgkC2Febb+2pQJ1DpKG3lCsw5CXhlC79VY43boKMlcEgcjMOpo0+/6rCHiSXKw4a/H 7xKbMYzOS+ZUh9MsSRMqkHxYBd0TdU2Xs8BnM6yEut9mF7RbaRNCbXC/fTQ58bkh/BKsDIo+H6C Tk7FWyOKD+ws3+F0nJWgYgOmbi/kTv7fEyNH7g53NVQ== X-Received: by 2002:a17:902:f68c:b0:2e5:cf96:9340 with SMTP id d9443c01a7336-2eb00338bb4mr39809965ad.18.1793263889488; Thu, 29 Oct 2026 01:51:29 -0700 (PDT) Received: from localhost.localdomain ([183.96.175.225]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2eae6bddae0sm29991205ad.35.2026.10.29.01.51.25 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 29 Oct 2026 01:51:28 -0700 (PDT) From: Joonho Lee To: linux-sound@vger.kernel.org Cc: tiwai@suse.de, perex@perex.cz, anton.yakovlev@opensynergy.com, mst@redhat.com, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, corbet@lwn.net, skhan@linuxfoundation.org, rdunlap@infradead.org, linux-doc@vger.kernel.org, Joonho Lee Subject: [PATCH v9 11/14] docs: describe virtio-sound capture options Date: Thu, 29 Oct 2026 17:50:29 +0900 Message-ID: <20261029085032.70689-12-mynameisjune111@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261029085032.70689-1-mynameisjune111@gmail.com> References: <20261029085032.70689-1-mynameisjune111@gmail.com> X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document the five opt-in capture module parameters introduced by this series. All default to false. Describe the startup-empty, short-payload, packed-status and pause-restart compatibility behavior alongside staging, and require validation with the target device. Assisted-by: LLM Signed-off-by: Joonho Lee --- diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -8328,6 +8328,36 @@ brightness level. default: 1 + virtio_snd.capture_allow_empty= [HW,SOUND] + Retry a bounded number of empty startup capture replies. + Format: + Default: false. Compatibility option for devices that + require staged capture; validate with the target device. + + virtio_snd.capture_allow_short= [HW,SOUND] + Accept non-empty, frame-aligned short capture replies. + Format: + Default: false. Compatibility option for devices that + require staged capture; validate with the target device. + + virtio_snd.capture_packed_status= [HW,SOUND] + Read status immediately after the returned capture data. + Format: + Default: false. Compatibility option for devices that + require staged capture; validate with the target device. + + virtio_snd.capture_pause_restart= [HW,SOUND] + Release and reprepare capture streams across pause. + Format: + Default: false. Compatibility option for devices that + require staged capture; validate with the target device. + + virtio_snd.capture_staging= [HW,SOUND] + Use request-owned buffers for capture data. + Format: + Default: false. Compatibility option for devices that + require staged capture; validate with the target device. + virtio_mmio.device= [VMMIO] Memory mapped virtio (platform) device.