Messages in this thread Patch in this message | | | From | Jonathan Neuschäfer <> | Subject | [PATCH v2 4/5] powerpc: wii: Don't rely on the reserved memory hack | Date | Wed, 28 Mar 2018 02:25:43 +0200 |
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Because the two memory blocks (usually called MEM1 and MEM2) are not merged anymore, __request_region in kernel/resource.c will correctly allow reserving regions in the physical address space between MEM1 and MEM2, where many important peripherals are (GPIO, MMC, USB, ...).
A previous change to __ioremap_caller in arch/powerpc/mm/pgtable_32.c ensures that multiple memblocks are properly considered in ioremap; this makes it unnecessary to set __allow_ioremap_reserved.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> ---
v2: Add some text to the commit message. --- arch/powerpc/platforms/embedded6xx/wii.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-)
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c index 4682327f76a9..fc00d82691e1 100644 --- a/arch/powerpc/platforms/embedded6xx/wii.c +++ b/arch/powerpc/platforms/embedded6xx/wii.c @@ -81,21 +81,9 @@ void __init wii_memory_fixups(void) BUG_ON(memblock.memory.cnt != 2); BUG_ON(!page_aligned(p[0].base) || !page_aligned(p[1].base)); - /* trim unaligned tail */ - memblock_remove(ALIGN(p[1].base + p[1].size, PAGE_SIZE), - (phys_addr_t)ULLONG_MAX); - - /* determine hole, add & reserve them */ + /* determine hole */ wii_hole_start = ALIGN(p[0].base + p[0].size, PAGE_SIZE); wii_hole_size = p[1].base - wii_hole_start; - memblock_add(wii_hole_start, wii_hole_size); - memblock_reserve(wii_hole_start, wii_hole_size); - - BUG_ON(memblock.memory.cnt != 1); - __memblock_dump_all(); - - /* allow ioremapping the address space in the hole */ - __allow_ioremap_reserved = 1; } unsigned long __init wii_mmu_mapin_mem2(unsigned long top) -- 2.16.2
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