From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx> This options is used to reserve a shared memory region for user processes to use for hardware memory buffers. The actual code to support the option comes in the following patch. Signed-off-by: Corey Minyard <cminyard@xxxxxxxxxx> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx> --- arch/mips/cavium-octeon/Kconfig | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig index 4984e46..c1899f1 100644 --- a/arch/mips/cavium-octeon/Kconfig +++ b/arch/mips/cavium-octeon/Kconfig @@ -67,6 +67,18 @@ config CAVIUM_OCTEON_LOCK_L2_MEMCPY help Lock the kernel's implementation of memcpy() into L2. +config CAVIUM_RESERVE32 + int "Memory to reserve for user processes shared region (MB)" + range 0 1536 + default "0" + help + Reserve a shared memory region for user processes to use for hardware + memory buffers. This is required for 32bit applications to be able to + send and receive packets directly. Applications access this memory by + memory mapping /dev/mem for the addresses in /proc/octeon_info. For + optimal performance with HugeTLBs, keep this size an even number of + megabytes. + config OCTEON_ILM tristate "Module to measure interrupt latency using Octeon CIU Timer" help -- 2.10.2
