Lines Matching refs:memory
143 aspects of kernel memory management.
155 This is needed to be able to allocate uncachable memory regions.
156 The feature requires the design to define the RAM memory controller
157 window to be twice as large as the actual physical memory.
160 bool "High memory support"
165 space as well as some memory mapped IO. That means that, if you
166 have a large amount of physical memory and/or IO, not all of the
167 memory can be "permanently mapped" by the kernel. The physical
168 memory that is not permanently mapped is called "high memory".
173 bool "Set maximum low memory"
176 This option allows you to set the maximum amount of memory which
177 will be used as "low memory", that is, memory which the kernel can
180 memory.
185 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
204 the kernel will map low memory (the kernel image will be linked at
205 this address). This can be useful in optimizing the virtual memory
221 virtual memory layout of the system.
238 overhead. However the utilization of memory will increase.