--- zzzz-none-000/linux-3.10.107/Documentation/arm/memory.txt 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/Documentation/arm/memory.txt 2021-02-04 17:41:59.000000000 +0000 @@ -41,16 +41,9 @@ fffe0000 fffe7fff ITCM mapping area for platforms with ITCM mounted inside the CPU. -fff00000 fffdffff Fixmap mapping region. Addresses provided +ffc00000 ffefffff Fixmap mapping region. Addresses provided by fix_to_virt() will be located here. -ffc00000 ffefffff DMA memory mapping region. Memory returned - by the dma_alloc_xxx functions will be - dynamically mapped here. - -ff000000 ffbfffff Reserved for future expansion of DMA - mapping region. - fee00000 feffffff Mapping of PCI I/O space. This is a static mapping within the vmalloc space. @@ -61,7 +54,7 @@ located here through iotable_init(). VMALLOC_START is based upon the value of the high_memory variable, and VMALLOC_END - is equal to 0xff000000. + is equal to 0xff800000. PAGE_OFFSET high_memory-1 Kernel direct-mapped RAM region. This maps the platforms RAM, and typically