Mike Rapoport 055b4a62f1 powerpc: Ensure that swiotlb buffer is allocated from low memory ...

[ Upstream commit 8fabc62323 ]

Some powerpc platforms (e.g. 85xx) limit DMA-able memory way below 4G.
If a system has more physical memory than this limit, the swiotlb
buffer is not addressable because it is allocated from memblock using
top-down mode.

Force memblock to bottom-up mode before calling swiotlb_init() to
ensure that the swiotlb buffer is DMA-able.

Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191204123524.22919-1-rppt@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-01-12 12:17:14 +01:00

..

8xx_mmu.c

Revert "powerpc/8xx: Use L1 entry APG to handle _PAGE_ACCESSED for CONFIG_SWAP"

2018-11-21 09:19:18 +01:00

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: Mark mmu_init_secondary() as __init

2018-07-30 22:48:22 +10:00

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/mm: Rename map_page() to map_kernel_page() on 32-bit

2017-06-05 19:59:03 +10:00

drmem.c

powerpc/mm/drmem: Fix unexpected flag value in ibm,dynamic-memory-v2

2018-02-23 16:45:51 +11:00

dump_hashpagetable.c

powerpc: remove superflous inclusions of asm/fixmap.h

2018-07-30 22:48:18 +10:00

dump_linuxpagetables.c

powerpc/mm: Fix linux page tables build with some configs

2019-01-13 09:50:55 +01:00

fault.c

powerpc/mm: Make NULL pointer deferences explicit on bad page faults.

2019-12-05 09:20:42 +01:00

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: clean inclusions of asm/feature-fixups.h

2018-07-30 22:48:17 +10:00

hash_native_64.c

powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9

2019-11-10 11:27:55 +01:00

hash_utils_64.c

powerpc/book3s64/hash: Add cond_resched to avoid soft lockup warning

2020-01-04 19:12:46 +01:00

highmem.c

powerpc/mm: remove warning about ‘type’ being set

2018-08-10 22:12:38 +10:00

hugepage-hash64.c

powerpc/mm/hash: Remove the superfluous bitwise operation when find hpte group

2018-07-24 22:03:17 +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

powerpc/mm/hash64: Store the slot information at the right offset for hugetlb

2018-02-13 22:37:48 +11:00

hugetlbpage-radix.c

powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback

2019-04-05 22:33:02 +02:00

hugetlbpage.c

powerpc/mm: Handle page table allocation failures

2019-07-31 07:27:05 +02:00

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

2019-01-13 09:50:57 +01:00

init-common.c

powerpc/mm: Fix crashes with 16G huge pages

2018-02-13 22:37:47 +11:00

Makefile

powerpc/Makefiles: Convert ifeq to ifdef where possible

2018-08-08 00:32:36 +10:00

mem.c

powerpc: Ensure that swiotlb buffer is allocated from low memory

2020-01-12 12:17:14 +01:00

mmap.c

exec: pass stack rlimit into mm layout functions

2018-04-11 10:28:37 -07:00

mmu_context_book3s64.c

powerpc/mm/64s/hash: Reallocate context ids on fork

2019-06-25 11:36:02 +08:00

mmu_context_hash32.c

powerpc: remove unnecessary inclusion of asm/tlbflush.h

2018-07-30 22:48:20 +10:00

mmu_context_iommu.c

KVM: PPC: Avoid marking DMA-mapped pages dirty in real mode

2018-09-12 08:49:54 +10:00

mmu_context_nohash.c

powerpc/mm: Remove stale_map[] handling on non SMP processors

2018-06-04 00:39:16 +10:00

mmu_context.c

powerpc/64s/radix: optimise pte_update

2018-06-03 20:40:36 +10:00

mmu_decl.h

powerpc: remove unnecessary inclusion of asm/tlbflush.h

2018-07-30 22:48:20 +10:00

numa.c

powerpc/numa: improve control of topology updates

2019-05-31 06:46:18 -07:00

pgtable_32.c

powerpc/mm/32: Remove the reserved memory hack

2018-04-01 00:47:44 +11:00

pgtable_64.c

powerpc/mm: Use page fragments for allocation page table at PMD level

2018-05-15 22:29:12 +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/radix: Fix kernel crash with mremap()

2019-02-15 08:10:12 +01:00

pgtable-hash64.c

powerpc/mm: Use pmd_lockptr instead of opencoding it

2018-05-15 22:29:09 +10:00

pgtable-radix.c

powerpc/mm/radix: Fix small page at boundary when splitting

2019-12-01 09:16:45 +01:00

pgtable.c

powerpc/mm/hugetlb: Update hugetlb related locks

2018-06-03 20:40:37 +10:00

pkeys.c

powerpc/pkeys: Fix handling of pkey state across fork()

2019-09-16 08:22:01 +02:00

ppc_mmu_32.c

powerpc/book3s/32: fix number of bats in p/v_block_mapped()

2019-12-05 09:20:38 +01:00

slb_low.S

powerpc: clean inclusions of asm/feature-fixups.h

2018-07-30 22:48:17 +10:00

slb.c

powerpc/64s/hash: Fix stab_rr off by one initialization

2019-11-20 18:46:58 +01:00

slice.c

powerpc/mm/hash: Handle mmap_min_addr correctly in get_unmapped_area topdown search

2019-05-08 07:21:54 +02:00

subpage-prot.c

powerpc: remove unnecessary inclusion of asm/tlbflush.h

2018-07-30 22:48:20 +10:00

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)

2019-04-03 06:26:20 +02:00

tlb_nohash_low.S

powerpc: clean inclusions of asm/feature-fixups.h

2018-07-30 22:48:17 +10:00

tlb_nohash.c

powerpc/nohash: fix undefined behaviour when testing page size support

2018-11-21 09:19:09 +01:00

tlb-radix.c

powerpc/64s/radix: Fix radix__flush_tlb_collapsed_pmd double flushing pmd

2019-12-01 09:16:46 +01:00

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