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Nicholas Piggin 7104dccfd0 powerpc/64s/hash: Fix assert_slb_presence() use of the slbfee. instruction 
The slbfee. instruction must have bit 24 of RB clear, failure to do
so can result in false negatives that result in incorrect assertions.

This is not obvious from the ISA v3.0B document, which only says:

    The hardware ignores the contents of RB 36:38 40:63 -- p.1032

This patch fixes the bug and also clears all other bits from PPC bit
36-63, which is good practice when dealing with reserved or ignored
bits.

Fixes: e15a4fea4d ("powerpc/64s/hash: Add some SLB debugging tests")
Cc: stable@vger.kernel.org # v4.20+
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 		2019-02-22 00:10:14 +11:00
..
8xx_mmu.c powerpc/8xx: use modify_instruction_site() 2018-12-19 18:56:32 +11:00
40x_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
44x_mmu.c powerpc/44x: use patch_sites for TLB handlers patching 2018-12-19 18:56:32 +11:00
Makefile powerpc/mm: dump block address translation on book3s/32 2018-12-04 19:46:49 +11:00
copro_fault.c mm: convert return type of handle_mm_fault() caller to vm_fault_t 2018-08-17 16:20:28 -07:00
dma-noncoherent.c powerpc/dma: use the generic direct mapping bypass 2019-02-18 22:41:04 +11:00
drmem.c powerpc/mm/drmem: Fix unexpected flag value in ibm,dynamic-memory-v2 2018-02-23 16:45:51 +11:00
dump_bats.c powerpc/mm: dump block address translation on book3s/32 2018-12-04 19:46:49 +11:00
dump_hashpagetable.c powerpc: remove superflous inclusions of asm/fixmap.h 2018-07-30 22:48:18 +10:00
dump_linuxpagetables-8xx.c powerpc/8xx: change name of a few page flags to avoid confusion 2018-10-14 18:04:09 +11:00
dump_linuxpagetables-book3s64.c powerpc/book3s64: fix dump_linuxpagetables "present" flag 2018-10-20 13:26:47 +11:00
dump_linuxpagetables-generic.c powerpc/mm: add exec protection on powerpc 603 2018-12-19 18:56:32 +11:00
dump_linuxpagetables.c powerpc/mm: Fix linux page tables build with some configs 2018-11-27 11:03:36 +11:00
dump_linuxpagetables.h powerpc/mm: Split dump_pagelinuxtables flag_array table 2018-10-14 18:04:09 +11:00
dump_sr.c powerpc/mm: dump segment registers on book3s/32 2018-12-04 19:45:54 +11:00
fault.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
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/hash: Remove the superfluous bitwise operation when find hpte group 2018-07-24 22:03:17 +10:00
hash64_64k.c powerpc/mm/hash: Remove the superfluous bitwise operation when find hpte group 2018-07-24 22:03:17 +10:00
hash_low_32.S powerpc/book3s/32: Use patch_site to patch hash functions 2018-12-19 18:56:32 +11:00
hash_native_64.c powerpc/64s/hash: Do not use PPC_INVALIDATE_ERAT on CPUs before POWER9 2018-10-04 23:16:53 +10:00
hash_utils_64.c powerpc/mm: Fix debugfs_simple_attr.cocci warnings 2019-01-14 20:39:27 +11:00
highmem.c powerpc/mm: remove warning about ‘type’ being set 2018-08-10 22:12:38 +10:00
hugepage-hash64.c arch/powerpc/mm/hash: validate the pte entries before handling the hash fault 2018-10-03 15:39:59 +10:00
hugetlbpage-book3e.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hugetlbpage-hash64.c arch/powerpc/mm/hash: validate the pte entries before handling the hash fault 2018-10-03 15:39:59 +10:00
hugetlbpage-radix.c powerpc updates for 4.15 2017-11-16 12:47:46 -08:00
hugetlbpage.c powerpc updates for 4.21 2018-12-27 10:43:24 -08:00
init-common.c powerpc/mm: remove unnecessary test in pgtable_cache_init() 2018-12-04 19:45:01 +11:00
init_32.c powerpc/mm/32: Remove the reserved memory hack 2018-04-01 00:47:44 +11:00
init_64.c powerpc/mm: Fallback to RAM if the altmap is unusable 2018-12-09 21:33:21 +11:00
mem.c Merge branch 'topic/dma' into next 2019-02-21 23:15:10 +11:00
mmap.c exec: pass stack rlimit into mm layout functions 2018-04-11 10:28:37 -07:00
mmu_context.c powerpc/mm: Extend pte_fragment functionality to PPC32 2018-12-04 19:45:01 +11:00
mmu_context_book3s64.c powerpc/mm: Move pte_fragment_alloc() to a common location 2018-12-04 19:45:01 +11:00
mmu_context_hash32.c powerpc: remove unnecessary inclusion of asm/tlbflush.h 2018-07-30 22:48:20 +10:00
mmu_context_iommu.c powerpc/vfio/iommu/kvm: Do not pin device memory 2018-12-21 16:20:46 +11:00
mmu_context_nohash.c powerpc/mm: define an empty slice_init_new_context_exec() 2018-12-19 18:56:32 +11:00
mmu_decl.h powerpc: change CONFIG_6xx to CONFIG_PPC_BOOK3S_32 2018-11-26 22:33:37 +11:00
numa.c powerpc/pseries: Perform full re-add of CPU for topology update post-migration 2019-01-30 23:28:56 +11:00
pgtable-book3e.c powerpc: handover page flags with a pgprot_t parameter 2018-10-14 18:04:09 +11:00
pgtable-book3s64.c powerpc/radix: Fix kernel crash with mremap() 2019-01-31 20:10:15 +11:00
pgtable-frag.c mm: treewide: remove unused address argument from pte_alloc functions 2019-01-04 13:13:47 -08:00
pgtable-hash64.c powerpc: handover page flags with a pgprot_t parameter 2018-10-14 18:04:09 +11:00
pgtable-radix.c powerpc/mm/radix: Display if mappings are exec or not 2018-10-20 13:26:47 +11:00
pgtable.c powerpc/mm: add exec protection on powerpc 603 2018-12-19 18:56:32 +11:00
pgtable_32.c mm: treewide: remove unused address argument from pte_alloc functions 2019-01-04 13:13:47 -08:00
pgtable_64.c powerpc/mm: use pte helpers in generic code 2018-10-14 18:04:09 +11:00
pkeys.c powerpc/pkeys: Fix handling of pkey state across fork() 2018-12-21 14:46:50 +11:00
ppc_mmu_32.c powerpc/book3s/32: fix number of bats in p/v_block_mapped() 2018-12-19 18:56:32 +11:00
slb.c powerpc/64s/hash: Fix assert_slb_presence() use of the slbfee. instruction 2019-02-22 00:10:14 +11:00
slice.c powerpc/mm: fix always true/false warning in slice.c 2018-10-20 13:26:47 +11:00
subpage-prot.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
tlb-radix.c powerpc updates for 4.20 2018-10-26 14:36:21 -07:00
tlb_hash32.c powerpc/sparse: Fix plain integer as NULL pointer warning 2018-05-25 12:04:38 +10:00
tlb_hash64.c powerpc/mm: Add support for handling > 512TB address in SLB miss 2018-03-31 00:10:38 +11:00
tlb_low_64e.S powerpc/fsl: Flush the branch predictor at each kernel entry (64bit) 2018-12-20 22:59:03 +11:00
tlb_nohash.c powerpc: remove unnecessary unlikely() 2019-01-15 11:38:05 +11:00
tlb_nohash_low.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
vphn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vphn.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00