AuxXxilium/linux_dsm_epyc7002
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541cebb51f
linux_dsm_epyc7002/arch/powerpc/mm/book3s32
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Christophe Leroy 541cebb51f powerpc/32s: Fix module loading failure when VMALLOC_END is over 0xf0000000 
In is_module_segment(), when VMALLOC_END is over 0xf0000000,
ALIGN(VMALLOC_END, SZ_256M) has value 0.

In that case, addr >= ALIGN(VMALLOC_END, SZ_256M) is always
true then is_module_segment() always returns false.

Use (ALIGN(VMALLOC_END, SZ_256M) - 1) which will have
value 0xffffffff and will be suitable for the comparison.

Fixes: c496433197 ("powerpc/32s: Only leave NX unset on segments used for modules")
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/09fc73fe9c7423c6b4cf93f93df9bb0ed8eefab5.1597994047.git.christophe.leroy@csgroup.eu
2020-08-21 23:30:25 +10:00
..
hash_low.S powerpc/32s: Kernel space starts at TASK_SIZE 2020-07-27 00:01:30 +10:00
Makefile powerpc/mm: Fix makefile for KASAN 2019-05-06 20:21:56 +10:00
mmu_context.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mmu.c powerpc/32s: Fix module loading failure when VMALLOC_END is over 0xf0000000 2020-08-21 23:30:25 +10:00
tlb.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00