Hello Serge, On 17/01/18 23:22, Serge Semin wrote: > The patchset is applied on top of kernel 4.15-rc8 and can be found > submitted at my repo: > https://github.com/fancer/Linux-kernel-MIPS-memblock-project I've tested the Linux from your repo on Octeon2 and it looks good to me. I've only tested startup though. Therefore, Tested-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx> I've noticed one positive effect I cannot explain -- with almost the same physical memory map I observe almost 2 megabytes more available memory after startup: without patches: root@(none):~ >free total used free shared buff/cache available Mem: 955040 16264 839948 80068 98828 810068 Swap: 0 0 0 memory map: memory: 0000000001090dc0 @ 0000000009000000 (usable after init) memory: 0000000005400000 @ 0000000002b00000 (usable) memory: 0000000000c00000 @ 0000000008200000 (usable) memory: 0000000004800000 @ 000000000a100000 (usable) memory: 000000001fc00000 @ 0000000020000000 (usable) memory: 0000000010000000 @ 0000000040000000 (usable) memory: 000000000190a9d0 @ 0000000001100000 (usable) ---------------------------------------- with patches: root@(none):~ >free total used free shared buff/cache available Mem: 955028 14292 841884 80068 98852 811996 Swap: 0 0 0 memory map: memory: 0000000001090e00 @ 0000000009000000 (usable after init) memory: 0000000005400000 @ 0000000002b00000 (usable) memory: 0000000000c00000 @ 0000000008200000 (usable) memory: 0000000004800000 @ 000000000a100000 (usable) memory: 000000001fc00000 @ 0000000020000000 (usable) memory: 0000000010000000 @ 0000000040000000 (usable) memory: 000000000190c9d0 @ 0000000001100000 (usable) > Signed-off-by: Serge Semin <fancer.lancer@xxxxxxxxx> > > Serge Semin (14): > MIPS: memblock: Add RESERVED_NOMAP memory flag > MIPS: memblock: Surely map BSS kernel memory section > MIPS: memblock: Reserve initrd memory in memblock > MIPS: memblock: Discard bootmem initialization > MIPS: memblock: Add reserved memory regions to memblock > MIPS: memblock: Reserve kdump/crash regions in memblock > MIPS: memblock: Mark present sparsemem sections > MIPS: memblock: Simplify DMA contiguous reservation > MIPS: memblock: Allow memblock regions resize > MIPS: memblock: Perform early low memory test > MIPS: memblock: Print out kernel virtual mem layout > MIPS: memblock: Discard bootmem from Loongson3 code > MIPS: memblock: Discard bootmem from SGI IP27 code > MIPS: memblock: Deactivate bootmem allocator -- Best regards, Alexander Sverdlin.
