diff options
| author | Junhua Huang | 2019-07-06 14:41:15 +0800 |
|---|---|---|
| committer | Will Deacon | 2019-08-05 12:35:34 +0100 |
| commit | 13776f9d40a028a245bb766269e360f5b7a62721 (patch) | |
| tree | 9df6c442578a46f10b18c318da3e3279de9e4c9a /arch/arm64 | |
| parent | 22ec71615d824f4f11d38d0e55a88d8956b7e45f (diff) | |
arm64: mm: free the initrd reserved memblock in a aligned manner
We should free the initrd reserved memblock in an aligned manner,
because the initrd reserves the memblock in an aligned manner
in arm64_memblock_init().
Otherwise there are some fragments in memblock_reserved regions
after free_initrd_mem(). e.g.:
/sys/kernel/debug/memblock # cat reserved
0: 0x0000000080080000..0x00000000817fafff
1: 0x0000000083400000..0x0000000083ffffff
2: 0x0000000090000000..0x000000009000407f
3: 0x00000000b0000000..0x00000000b000003f
4: 0x00000000b26184ea..0x00000000b2618fff
The fragments like the ranges from b0000000 to b000003f and
from b26184ea to b2618fff should be freed.
And we can do free_reserved_area() after memblock_free(),
as free_reserved_area() calls __free_pages(), once we've done
that it could be allocated somewhere else,
but memblock and iomem still say this is reserved memory.
Fixes: 05c58752f9dc ("arm64: To remove initrd reserved area entry from memblock")
Signed-off-by: Junhua Huang <huang.junhua@zte.com.cn>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/mm/init.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index f3c795278def..b1ee6cb4b17f 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -570,8 +570,12 @@ void free_initmem(void) #ifdef CONFIG_BLK_DEV_INITRD void __init free_initrd_mem(unsigned long start, unsigned long end) { + unsigned long aligned_start, aligned_end; + + aligned_start = __virt_to_phys(start) & PAGE_MASK; + aligned_end = PAGE_ALIGN(__virt_to_phys(end)); + memblock_free(aligned_start, aligned_end - aligned_start); free_reserved_area((void *)start, (void *)end, 0, "initrd"); - memblock_free(__virt_to_phys(start), end - start); } #endif |