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powerpc64/kasan: Remove unreachable invalid range check in kasan_init_phys_region()

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kasan_init() maps each memblock region with for_each_mem_range() and passes
it to kasan_init_phys_region(), which does nothing when start >= end.
for_each_mem_range() never returns an invalid range, so start < end always.

Therefore the start >= end check is unreachable, so remove it.

No functional change.

Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Link: https://patch.msgid.link/20260630150413.1718632-7-ekffu200098@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
This commit is contained in:
Sang-Heon Jeon 2026-07-01 00:04:11 +09:00 committed by Mike Rapoport (Microsoft)
parent 3db1a9ccf9
commit 21e95a4b6f
2 changed files with 0 additions and 6 deletions
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3
arch/powerpc/mm/kasan/init_book3e_64.c
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@ -68,9 +68,6 @@ static void __init kasan_init_phys_region(void *start, void *end)
unsigned long k_start, k_end, k_cur;
void *va;
if (start >= end)
return;
k_start = ALIGN_DOWN((unsigned long)kasan_mem_to_shadow(start), PAGE_SIZE);
k_end = ALIGN((unsigned long)kasan_mem_to_shadow(end), PAGE_SIZE);

3
arch/powerpc/mm/kasan/init_book3s_64.c
View File

@ -24,9 +24,6 @@ static void __init kasan_init_phys_region(void *start, void *end)
unsigned long k_start, k_end, k_cur;
void *va;
if (start >= end)
return;
k_start = ALIGN_DOWN((unsigned long)kasan_mem_to_shadow(start), PAGE_SIZE);
k_end = ALIGN((unsigned long)kasan_mem_to_shadow(end), PAGE_SIZE);