linux_dsm_epyc7002/arch/powerpc/mm
Aneesh Kumar K.V a525108cf1 powerpc/mm/hugetlb: Filter out hugepage size not supported by page table layout
Without this if firmware reports 1MB page size support we will crash
trying to use 1MB as hugetlb page size.

echo 300 > /sys/kernel/mm/hugepages/hugepages-1024kB/nr_hugepages

kernel BUG at ./arch/powerpc/include/asm/hugetlb.h:19!
.....
....
[c0000000e2c27b30] c00000000029dae8 .hugetlb_fault+0x638/0xda0
[c0000000e2c27c30] c00000000026fb64 .handle_mm_fault+0x844/0x1d70
[c0000000e2c27d70] c00000000004805c .do_page_fault+0x3dc/0x7c0
[c0000000e2c27e30] c00000000000ac98 handle_page_fault+0x10/0x30

With fix, we don't enable 1MB as hugepage size.

bash-4.2# cd /sys/kernel/mm/hugepages/
bash-4.2# ls
hugepages-16384kB  hugepages-16777216kB

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-03-31 23:09:50 +11:00
..
8xx_mmu.c powerpc/8xx: add CONFIG_PIN_TLB_IMMR 2016-07-09 02:02:48 -05:00
40x_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
44x_mmu.c powerpc: Delete __cpuinit usage from all users 2013-07-01 11:10:36 +10:00
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: Simplify test in __dma_sync() 2016-03-11 17:20:12 -06:00
dump_hashpagetable.c powerpc/mm: Dump hash table 2016-11-17 17:11:47 +11:00
dump_linuxpagetables.c powerpc/mm: Fix page table dump build on non-Book3S 2016-12-01 16:20:18 +11:00
fault.c powerpc/mm: Move mmap_sem unlocking in do_page_fault() 2017-03-21 22:09:18 +11:00
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 Merge branch 'topic/ppc-kvm' into next 2016-11-24 22:14:52 +11:00
hash_utils_64.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
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/hugetlb: Add flush_hugetlb_tlb_range 2016-08-01 11:15:13 +10:00
hugetlbpage.c powerpc/mm/hugetlb: Filter out hugepage size not supported by page table layout 2017-03-31 23:09:50 +11:00
icswx_pid.c powerpc: Split ICSWX ACOP and PID processing 2011-11-25 14:11:27 +11:00
icswx.c powerpc: Fix typo "CONFIG_ICSWX_PID" 2013-04-18 13:03:54 +10:00
icswx.h powerpc/icswx: Fix race condition with IPI setting ACOP 2012-03-07 17:06:09 +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: Update to new option-vector-5 format for CAS 2017-03-06 21:44:09 +11:00
init-common.c Merge branch 'topic/ppc-kvm' into next 2017-02-14 17:18:29 +11:00
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/pseries: Automatically resize HPT for memory hot add/remove 2017-02-10 13:28:02 +11:00
mmap.c sched/headers: Prepare for new header dependencies before moving more code to <linux/sched/mm.h> 2017-03-02 08:42:30 +01:00
mmu_context_book3s64.c powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown 2016-12-02 14:38:34 +11:00
mmu_context_hash32.c powerpc: Remove power3 from comments 2014-07-28 14:10:26 +10:00
mmu_context_iommu.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
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/8xx: Map IMMR area with 512k page at a fixed address 2016-07-09 02:02:48 -05:00
numa.c powerpc: Drop GPL from of_node_to_nid() export to match other arches 2017-02-10 13:28:05 +11:00
pgtable_32.c powerpc: port 64 bits pgtable_cache to 32 bits 2016-12-09 22:48:01 -06:00
pgtable_64.c Merge branch 'topic/ppc-kvm' into next 2017-02-14 17:18:29 +11:00
pgtable-book3e.c powerpc/mm: Make page table size a variable 2016-05-01 18:32:48 +10:00
pgtable-book3s64.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
pgtable-hash64.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
pgtable-radix.c powerpc fixes for 4.11 #3 2017-03-07 10:46:10 -08:00
pgtable.c powerpc/mm: Fix typo in set_pte_at() 2017-02-17 22:16:25 +11:00
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_low.S powerpc/mm: Blacklist SLB symbols from kprobe 2017-02-17 10:58:52 +11:00
slb.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
slice.c powerpc/mm/slice: Fix off-by-1 error when computing slice mask 2017-03-31 23:09:48 +11:00
subpage-prot.c powerpc/mm: Return directly after a failed __copy_from_user() in sys_subpage_prot() 2017-01-25 13:34:22 +11:00
tlb_hash32.c powerpc/mm: remove flush_tlb_page_nohash 2016-08-01 11:15:13 +10:00
tlb_hash64.c powerpc/mm: Hash abstraction for tlbflush routines 2016-05-01 18:33:08 +10:00
tlb_low_64e.S powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
tlb_nohash_low.S powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
tlb_nohash.c powerpc/8xx: Implement support of hugepages 2016-12-09 22:49:07 -06:00
tlb-radix.c powerpc/mm/radix: rename _PAGE_LARGE to R_PAGE_LARGE 2017-03-31 23:09:49 +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