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crosvm: Add kernel parameters when ac97 devices exist

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This CL simplifies crosvm user interface since these kernel parameters
will always be used by ac97 devices.

BUG=b:172851292
TEST=Build and test VMs

Cq-Depend: chromium:2562988
Change-Id: I8461b9fa092c955b07cd88fbce582172a27fbb48
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2562808
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Chih-Yang Hsia <paulhsia@chromium.org>
Commit-Queue: Chih-Yang Hsia <paulhsia@chromium.org>
This commit is contained in:
paulhsia 2020-11-27 14:04:58 +08:00 committed by Commit Bot
parent 4e1f99a68d
commit 164782429c
1 changed files with 7 additions and 0 deletions
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7
src/main.rs
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@ -722,6 +722,13 @@ fn set_argument(cfg: &mut Config, name: &str, value: Option<&str>) -> argument::
#[cfg(feature = "audio")]
"ac97" => {
let ac97_params = parse_ac97_options(value.unwrap())?;
// Add kernel parameters related to the intel8x0 driver for ac97 devices once.
if cfg.ac97_parameters.is_empty() {
// Set `inside_vm=1` to save some register read ops in the driver.
cfg.params.push("snd_intel8x0.inside_vm=1".to_string());
// Set `ac97_clock=48000` to save intel8x0_measure_ac97_clock call in the driver.
cfg.params.push("snd_intel8x0.ac97_clock=48000".to_string());
}
cfg.ac97_parameters.push(ac97_params);
}
"serial" => {