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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/sound/xen/Kconfig
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@@ -1,3 +1,4 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 # ALSA Xen drivers
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 config SND_XEN_FRONTEND
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@@ -5,6 +6,7 @@
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 	depends on XEN
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 	select SND_PCM
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 	select XEN_XENBUS_FRONTEND
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+	select XEN_FRONT_PGDIR_SHBUF
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 	help
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 	  Choose this option if you want to enable a para-virtualized
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 	  frontend sound driver for Xen guest OSes.