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A couple of arm64 fixes

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- Fix boot on Hikey-960 by avoiding an IPI with interrupts disabled
 - Fix address truncation in pfn_valid() implementation
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "A couple of arm64 fixes

   - Fix boot on Hikey-960 by avoiding an IPI with interrupts disabled

   - Fix address truncation in pfn_valid() implementation"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: check for upper PAGE_SHIFT bits in pfn_valid()
  arm64: Avoid calling stop_machine() when patching jump labels
This commit is contained in:
Linus Torvalds 2018-08-17 11:48:04 -07:00
commit edb0a20009
2 changed files with 6 additions and 2 deletions
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2
arch/arm64/kernel/jump_label.c
View File

@ -36,7 +36,7 @@ void arch_jump_label_transform(struct jump_entry *entry,
insn = aarch64_insn_gen_nop();
}
aarch64_insn_patch_text(&addr, &insn, 1);
aarch64_insn_patch_text_nosync(addr, insn);
}
void arch_jump_label_transform_static(struct jump_entry *entry,

6
arch/arm64/mm/init.c
View File

@ -287,7 +287,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
#ifdef CONFIG_HAVE_ARCH_PFN_VALID
int pfn_valid(unsigned long pfn)
{
return memblock_is_map_memory(pfn << PAGE_SHIFT);
phys_addr_t addr = pfn << PAGE_SHIFT;
if ((addr >> PAGE_SHIFT) != pfn)
return 0;
return memblock_is_map_memory(addr);
}
EXPORT_SYMBOL(pfn_valid);
#endif