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MIPS: Loongson64: Fix up reserving kernel memory range

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Reserve memory from &_text to &_end. Otherwise if kernel address
was modified, the memory range of start_pfn to kernel_start_pfn
would be reserved. Then we could not use this range.

Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Jinyang He 2020-11-25 18:11:02 +08:00 committed by Thomas Bogendoerfer
parent 915d8aac69
commit 1dac4585f5
1 changed files with 5 additions and 2 deletions
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7
arch/mips/loongson64/numa.c
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@ -151,6 +151,9 @@ static void __init node_mem_init(unsigned int node)
NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn;
if (node == 0) {
/* kernel start address */
unsigned long kernel_start_pfn = PFN_DOWN(__pa_symbol(&_text));
/* kernel end address */
unsigned long kernel_end_pfn = PFN_UP(__pa_symbol(&_end));
@ -158,8 +161,8 @@ static void __init node_mem_init(unsigned int node)
max_low_pfn = end_pfn;
/* Reserve the kernel text/data/bss */
memblock_reserve(start_pfn << PAGE_SHIFT,
((kernel_end_pfn - start_pfn) << PAGE_SHIFT));
memblock_reserve(kernel_start_pfn << PAGE_SHIFT,
((kernel_end_pfn - kernel_start_pfn) << PAGE_SHIFT));
/* Reserve 0xfe000000~0xffffffff for RS780E integrated GPU */
if (node_end_pfn(0) >= (0xffffffff >> PAGE_SHIFT))