Balbir Singh 7f6d498ed3 powerpc/mm/radix: Fix execute permissions for interrupt_vectors ... Commit 9abcc981de ("powerpc/mm/radix: Only add X for pages overlapping kernel text") changed the linear mapping on Radix to only mark the kernel text executable. However if the kernel is run relocated, for example as a kdump kernel, then the exception vectors are split from the kernel text, ie. they remain at real address 0. We tend to get away with it, because the kernel itself will usually be below 1G, which means the 1G page at 0-1G is marked executable and everything works OK. However if the kernel is loaded above 1G, or the system has less than 1G in total (meaning we can't use a 1G page), then the exception vectors will not be marked executable and the kernel will fail to boot. Fix it by also checking if the address range overlaps the exception vectors when deciding if we should add PAGE_KERNEL_X. Fixes: 9abcc981de ("powerpc/mm/radix: Only add X for pages overlapping kernel text") Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Balbir Singh <bsingharora@gmail.com> [mpe: Combine with the existing check, rewrite change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-07-03 23:12:19 +10:00
..
8xx_mmu.c	powerpc/mm: Rename map_page() to map_kernel_page() on 32-bit	2017-06-05 19:59:03 +10:00
40x_mmu.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
44x_mmu.c
copro_fault.c	powerpc/mm: Update PROTFAULT handling in the page fault path	2017-02-15 20:02:39 +11:00
dma-noncoherent.c	powerpc/mm: Rename map_page() to map_kernel_page() on 32-bit	2017-06-05 19:59:03 +10:00
dump_hashpagetable.c	powerpc/mm/ptdump: Dump the first entry of the linear mapping as well	2017-06-02 19:09:52 +10:00
dump_linuxpagetables.c	powerpc/mm: Fix crash in page table dump with huge pages	2017-05-17 11:56:33 +10:00
fault.c	powerpc/mm: The 8xx doesn't call do_page_fault() for breakpoints	2017-06-02 19:20:12 +10:00
fsl_booke_mmu.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
hash64_4k.c	powerpc/mm: Fix lazy icache flush on pre-POWER5	2016-11-29 23:59:40 +11:00
hash64_64k.c	powerpc/mm: Fix lazy icache flush on pre-POWER5	2016-11-29 23:59:40 +11:00
hash_low_32.S	powerpc/32: Remove Mac-on-Linux/rtlinux hooks	2017-03-21 22:09:26 +11:00
hash_native_64.c	powerpc/mm: Wire up hpte_removebolted for powernv	2017-07-02 20:40:28 +10:00
hash_utils_64.c	powerpc/mm: Trace tlbie(l) instructions	2017-06-23 21:14:49 +10:00
highmem.c	sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_*	2015-05-19 08:39:14 +02:00
hugepage-hash64.c	powerpc/mm: Move hash table ops to a separate structure	2016-07-21 18:59:09 +10:00
hugetlbpage-book3e.c	powerpc/mm/nohash: MM_SLICE is only used by book3s 64	2017-03-31 23:09:47 +11:00
hugetlbpage-hash64.c	powerpc/mm: Remove the debug hugepd_ok check	2017-01-23 19:19:28 +11:00
hugetlbpage-radix.c	powerpc/mm/radix: Use mm->task_size for boundary checking instead of addr_limit	2017-04-19 20:00:18 +10:00
hugetlbpage.c	powerpc/mm: Add devmap support for ppc64	2017-07-02 20:40:28 +10:00
icswx.c	scripts/spelling.txt: add regsiter -> register spelling mistake	2017-05-08 17:15:13 -07:00
icswx.h
icswx_pid.c
init-common.c	Merge branch 'topic/ppc-kvm' into next	2017-02-14 17:18:29 +11:00
init_32.c	powerpc/32: Add missing \n and switch to pr_warn()	2016-09-13 17:37:11 +10:00
init_64.c	powerpc/vmemmap: Add altmap support	2017-07-02 20:40:27 +10:00
Makefile	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next	2016-12-16 15:05:38 +11:00
mem.c	powerpc/vmemmap: Add altmap support	2017-07-02 20:40:27 +10:00
mmap.c	powerpc/mm: Fix possible out-of-bounds shift in arch_mmap_rnd()	2017-04-26 15:35:01 +10:00
mmu_context_book3s64.c	Merge branch 'fixes' into next	2017-07-03 23:05:43 +10:00
mmu_context_hash32.c
mmu_context_iommu.c	Merge branch 'topic/ppc-kvm' into next	2017-04-28 20:19:37 +10:00
mmu_context_nohash.c	powerpc/mm/nohash: MM_SLICE is only used by book3s 64	2017-03-31 23:09:47 +11:00
mmu_decl.h	powerpc/mm: Rename map_page() to map_kernel_page() on 32-bit	2017-06-05 19:59:03 +10:00
numa.c	powerpc/mm: Remove reduntant initmem information from log	2017-04-11 07:46:05 +10:00
pgtable-book3e.c	powerpc/mm: Make page table size a variable	2016-05-01 18:32:48 +10:00
pgtable-book3s64.c	powerpc/mm: Add devmap support for ppc64	2017-07-02 20:40:28 +10:00
pgtable-hash64.c	powerpc/mm: Add devmap support for ppc64	2017-07-02 20:40:28 +10:00
pgtable-radix.c	powerpc/mm/radix: Fix execute permissions for interrupt_vectors	2017-07-03 23:12:19 +10:00
pgtable.c	powerpc/mm: Fix typo in set_pte_at()	2017-02-17 22:16:25 +11:00
pgtable_32.c	powerpc/mm: Rename map_page() to map_kernel_page() on 32-bit	2017-06-05 19:59:03 +10:00
pgtable_64.c	powerpc/mm: Add devmap support for ppc64	2017-07-02 20:40:28 +10:00
ppc_mmu_32.c	powerpc32: refactor x_mapped_by_bats() and x_mapped_by_tlbcam() together	2016-03-11 17:18:02 -06:00
slb.c	powerpc/64s: Rename slb_allocate_realmode() to slb_allocate()	2017-06-21 16:18:33 +10:00
slb_low.S	powerpc/64s: Rename slb_allocate_realmode() to slb_allocate()	2017-06-21 16:18:33 +10:00
slice.c	powerpc/mmap: Any hint > 128TB searches the full VA space	2017-04-19 20:00:19 +10:00
subpage-prot.c	powerpc/mm/radix: Use mm->task_size for boundary checking instead of addr_limit	2017-04-19 20:00:18 +10:00
tlb-radix.c	powerpc/mm: Trace tlbie(l) instructions	2017-06-23 21:14:49 +10:00
tlb_hash32.c	powerpc/mm: remove flush_tlb_page_nohash	2016-08-01 11:15:13 +10:00
tlb_hash64.c	powerpc/mm/hash: Do a local flush if possible when no batch is active	2017-06-05 19:02:55 +10:00
tlb_low_64e.S	powerpc: Fix misspellings in comments.	2016-03-01 19:27:20 +11:00
tlb_nohash.c	powerpc/nohash: Fix use of mmu_has_feature() in setup_initial_memory_limit()	2017-04-11 07:46:04 +10:00
tlb_nohash_low.S	powerpc: Fix misspellings in comments.	2016-03-01 19:27:20 +11:00
vphn.c	powerpc/vphn: parsing code rewrite	2015-03-18 10:48:59 +11:00
vphn.h	powerpc/vphn: parsing code rewrite	2015-03-18 10:48:59 +11:00