Setting up the HMC media device driver

7.1 LPAR mode z/VM guest

You can set the cache size for the HMC media device driver.

Kernel parameters
If the HMC media device driver has been compiled into the kernel, you set the cache size by adding the hmcdrv.cachesize= parameter to the kernel parameter line.
Module parameters
If the HMC media device driver has been built as a separate module, hmcdrv, you set the cache size through the cachesize= module parameter.

Parent topic: HMC media device driver