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Andy Lutomirski 36b3a77268 x86/mm/64: Tighten up vmalloc_fault() sanity checks on 5-level kernels 
On a 5-level kernel, if a non-init mm has a top-level entry, it needs to
match init_mm's, but the vmalloc_fault() code skipped over the BUG_ON()
that would have checked it.

While we're at it, get rid of the rather confusing 4-level folded "pgd"
logic.

Cleans-up: b50858ce3e ("x86/mm/vmalloc: Add 5-level paging support")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Neil Berrington <neil.berrington@datacore.com>
Link: https://lkml.kernel.org/r/2ae598f8c279b0a29baf75df207e6f2fdddc0a1b.1516914529.git.luto@kernel.org
 		2018-01-26 15:56:23 +01:00
..
Makefile Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-29 17:02:49 -08:00
amdtopology.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpu_entry_area.c x86/cpu_entry_area: Add debugstore entries to cpu_entry_area 2017-12-23 21:13:00 +01:00
debug_pagetables.c x86/mm/dump_pagetables: Allow dumping current pagetables 2017-12-23 21:13:01 +01:00
dump_pagetables.c x86/mm: Map cpu_entry_area at the same place on 4/5 level 2018-01-04 23:04:57 +01:00
extable.c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-06 17:47:29 -08:00
fault.c x86/mm/64: Tighten up vmalloc_fault() sanity checks on 5-level kernels 2018-01-26 15:56:23 +01:00
highmem_32.c x86/mm: Audit and remove any unnecessary uses of module.h 2016-07-14 13:04:20 +02:00
hugetlbpage.c x86/mm: Prevent non-MAP_FIXED mapping across DEFAULT_MAP_WINDOW border 2017-11-16 11:43:11 +01:00
ident_map.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 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-05 12:23:57 -08:00
init_32.c x86/cpu_entry_area: Move it out of the fixmap 2017-12-22 20:13:05 +01:00
init_64.c mm, sparse: do not swamp log with huge vmemmap allocation failures 2017-11-15 18:21:07 -08:00
iomap_32.c x86/mm: Audit and remove any unnecessary uses of module.h 2016-07-14 13:04:20 +02:00
ioremap.c x86/mm/kmmio: Fix mmiotrace for page unaligned addresses 2017-12-11 15:35:18 +01:00
kasan_init_64.c x86/kasan: Panic if there is not enough memory to boot 2018-01-15 00:32:35 +01:00
kaslr.c x86/kaslr: Fix the vaddr_end mess 2018-01-05 00:39:57 +01:00
kmmio.c x86/mm/kmmio: Fix mmiotrace for page unaligned addresses 2017-12-11 15:35:18 +01:00
mem_encrypt.c x86: Use __nostackprotect for sme_encrypt_kernel 2018-01-20 17:22:54 -08:00
mem_encrypt_boot.S x86/mm: Encrypt the initrd earlier for BSP microcode update 2018-01-16 01:50:59 +01:00
mm_internal.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmap.c x86/mm: Limit mmap() of /dev/mem to valid physical addresses 2017-11-16 12:49:48 +01:00
mmio-mod.c x86/boot/e820: Move asm/e820.h to asm/e820/api.h 2017-01-28 09:31:13 +01:00
mpx.c Merge branch 'x86/mpx' into x86/asm, to pick up dependent commits 2017-11-08 10:55:48 +01:00
numa.c Merge branch 'x86/boot' into x86/mm, to avoid conflict 2017-04-11 08:56:05 +02:00
numa_32.c x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init() 2017-05-09 08:12:27 +02:00
numa_64.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
numa_emulation.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
numa_internal.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pageattr-test.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pageattr.c kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK 2017-11-15 18:21:04 -08:00
pat.c x86/mm: Use proper encryption attributes with /dev/mem 2017-07-18 11:38:05 +02:00
pat_internal.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pat_rbtree.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pf_in.c x86/mm: Audit and remove any unnecessary uses of module.h 2016-07-14 13:04:20 +02:00
pf_in.h
…
pgtable.c Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-29 17:02:49 -08:00
pgtable_32.c x86/cpu_entry_area: Move it out of the fixmap 2017-12-22 20:13:05 +01:00
physaddr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
physaddr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pkeys.c x86/fpu: Rename fpu::fpstate_active to fpu::initialized 2017-09-26 09:43:36 +02:00
pti.c x86/mm/pti: Remove dead logic in pti_user_pagetable_walk*() 2018-01-08 17:42:13 +01:00
setup_nx.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
srat.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
testmmiotrace.c Annotate hardware config module parameters in arch/x86/mm/ 2017-04-04 16:54:21 +01:00
tlb.c x86/mm/64: Fix vmapped stack syncing on very-large-memory 4-level systems 2018-01-26 15:56:23 +01:00