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-rw-r--r--drivers/s390/char/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index b3f1c458905f..97c4c9fdd53d 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -169,10 +169,21 @@ config VMCP
def_bool y
prompt "Support for the z/VM CP interface"
depends on S390
+ select CMA
help
Select this option if you want to be able to interact with the control
program on z/VM
+config VMCP_CMA_SIZE
+ int "Memory in MiB reserved for z/VM CP interface"
+ default "4"
+ depends on VMCP
+ help
+ Specify the default amount of memory in MiB reserved for the z/VM CP
+ interface. If needed this memory is used for large contiguous memory
+ allocations. The default can be changed with the kernel command line
+ parameter "vmcp_cma".
+
config MONREADER
def_tristate m
prompt "API for reading z/VM monitor service records"