AuxXxilium/linux_dsm_epyc7002
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ebad825cdd
linux_dsm_epyc7002/arch/ia64/mm
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Linus Torvalds ebad825cdd ia64: mark special ia64 memory areas anonymous 
Commit bfd40eaff5 ("mm: fix vma_is_anonymous() false-positives") made
newly allocated vma's have a dummy vm_ops field so that they wouldn't be
mistaken for anonymous mappings, and if you wanted an anonymous vma you
had to explicitly say so by calling "vma_set_anonymous()" on it.

However, it missed the two special vmas that ia64 processes have: the
register backing store and the NaT page.  So they wouldn't actually act
like anonymous ranges, and page faults on them caused a SIGBUS rather
than the creation of a new anon page in them.

That obviously will make any ia64 binary very unhappy indeed, and the
boot fails early.

Fixes: bfd40eaff5 ("mm: fix vma_is_anonymous() false-positives")
Reported-by: Tony Luck <tony.luck@intel.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-01 09:57:50 -07:00
..
contig.c ia64: replace ZONE_DMA with ZONE_DMA32 2018-01-15 09:35:51 +01:00
discontig.c libnvdimm for 4.16 2018-02-06 10:41:33 -08:00
extable.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fault.c signal: Ensure every siginfo we send has all bits initialized 2018-04-25 10:40:51 -05:00
hugetlbpage.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
init.c ia64: mark special ia64 memory areas anonymous 2018-08-01 09:57:50 -07:00
ioremap.c Add WB/UC check for early_ioremap 2013-03-19 16:14:52 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
numa.c mm: meminit: make __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid 2015-06-30 19:44:56 -07:00
tlb.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00