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Tue, 10 Nov 2026 16:06:44 -0800 (PST) Received: from localhost.localdomain ([183.96.175.225]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b1838e616dsm474361a91.4.2026.11.10.16.06.39 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 10 Nov 2026 16:06:43 -0800 (PST) From: Joonho Lee To: linux-sound@vger.kernel.org Cc: tiwai@suse.com, 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 v24 14/16] docs: describe virtio-sound capture options Date: Wed, 11 Nov 2026 09:05:41 +0900 Message-ID: <20261111000543.28550-15-mynameisjune111@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261111000543.28550-1-mynameisjune111@gmail.com> References: <20261111000543.28550-1-mynameisjune111@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document the request-owned default capture path, its temporary memory and copy cost, and the two remaining default-off compatibility parameters. Remove the earlier opt-in staging and short/empty-response descriptions. Assisted-by: LLM Signed-off-by: Joonho Lee --- Documentation/admin-guide/kernel-parameters.txt | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) 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 @@ -8344,6 +8344,29 @@ Can be used multiple times for multiple devices. + virtio_snd.capture_packed_status= [HW,ALSA] + Read an explicitly enabled packed status trailer after + the returned capture data. The fixed status scatterlist is + used by default. + Format: + Default: false. + + virtio_snd.capture_pause_restart= [HW,ALSA] + Stop and release the stream when pausing capture. On + resume, send SET_PARAMS, PREPARE, and START. With this + option disabled, pause uses STOP and START while retaining + the prepared stream. + Format: + Default: false. + + Capture always receives into request-owned buffers, then + appends validated, frame-aligned audio to the ALSA ring in + request order. A valid short response is retained. Empty + responses are tolerated only during bounded startup or for + requests already in flight at STOP or PAUSE. This uses up + to one PCM buffer of temporary memory and copies returned + audio into the ALSA ring. + vga= [BOOT,X86-32] Select a particular video mode See Documentation/arch/x86/boot.rst and Documentation/admin-guide/svga.rst.