dma32_pool_size(5)dma32_pool_size(5)NAMEdma32_pool_size - the amount of memory to reserve for the 32-bit DMA
Specify an integer value.
This tunable specifies the amount of memory in the first 4GB of the
physical address space to be reserved for DMA for 32-bit cards. The
memory is set aside at boot time and cannot be used for other purposes.
This is required only on some Itanium platforms. On platforms where
the 32-bit pool is not needed, this value is ignored.
The value of this tunable should be set based on the number of 32-bit
cards in the system and the type of cards.
All HP-UX kernel tunable parameters are release specific. This parame‐
ter may be removed or have its meaning changed in future releases of
Installation of optional kernel software, from HP or other vendors, may
cause changes to tunable parameter values. After installation, some
tunable parameters may no longer be at the default or recommended val‐
ues. For information about the effects of installation on tunable val‐
ues, consult the documentation for the kernel software being installed.
For information about optional kernel software that was factory
installed on your system, see at
was developed by HP.
Itanium(R)-based System OnlTunable Kernel Parameters dma32_pool_size(5)