[OpenWrt-Devel] [PATCH v2 07/12] config/Config-kernel.in: add options to enable dm-verity related kernel features

Thomas Petazzoni thomas.petazzoni at bootlin.com
Thu Nov 21 11:23:17 EST 2019

The dm-verity support requires a number of kernel options to be
enabled. This commit adds the corresponding options to
config/Config-kernel.in, so that they can be selected by other OpenWrt
options when needed.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Note: I sometimes encounter an issue at build time where the kernel
configuration system would prompt me for the values of the new options
made visible as a result of enabling those MD, BLK_DEV_DM, DM_VERITY
and DM_INIT options. Interestingly, I don't seem to encounter this at
every build. I'm not sure why OpenWrt doesn't simply run a "make
olddefconfig" to automatically accept the default values for
unspecified options. What is the appropriate course of action to solve
this problem ?
 config/Config-kernel.in | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index bdb6b91cbb..eae413eb29 100644
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -860,3 +860,18 @@ config KERNEL_CC_OPTIMIZE_FOR_SIZE
 	  your compiler resulting in a smaller kernel.
+config KERNEL_MD
+	bool "Multiple devices driver support (RAID and LVM)"
+	bool "Device mapper support"
+	depends on KERNEL_MD
+	bool "Verity target support"
+	depends on KERNEL_BLK_DEV_DM
+	bool "DM \"dm-mod.create=\" parameter support"
+	depends on KERNEL_BLK_DEV_DM

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