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Revert "arm: extend pfn_valid to take into account freed memory map alignment"

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This reverts commit 6026d4032d.

Change-Id: Ic5175e2caf9b8bed357c38de67156fd6f90e4a17
Signed-off-by: Srinivasarao Pathipati <quic_spathi@quicinc.com>
This commit is contained in:
Srinivasarao Pathipati 2022-04-21 10:19:50 +05:30
parent 598165f1e4
commit 6a08d0316d
1 changed files with 1 additions and 12 deletions
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13
arch/arm/mm/init.c
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@ -176,22 +176,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max_low,
int pfn_valid(unsigned long pfn)
{
phys_addr_t addr = __pfn_to_phys(pfn);
unsigned long pageblock_size = PAGE_SIZE * pageblock_nr_pages;
if (__phys_to_pfn(addr) != pfn)
return 0;
/*
* If address less than pageblock_size bytes away from a present
* memory chunk there still will be a memory map entry for it
* because we round freed memory map to the pageblock boundaries.
*/
if (memblock_overlaps_region(&memblock.memory,
ALIGN_DOWN(addr, pageblock_size),
pageblock_size))
return 1;
return 0;
return memblock_is_map_memory(__pfn_to_phys(pfn));
}
EXPORT_SYMBOL(pfn_valid);
#endif