Yang Shi bedf034169 powerpc/64s/radix: don't need to broadcast IPI for radix pmd collapse flush ...

The IPI broadcast is used to serialize against fast-GUP, but fast-GUP will
move to use RCU instead of disabling local interrupts in fast-GUP.  Using
an IPI is the old-styled way of serializing against fast-GUP although it
still works as expected now.

And fast-GUP now fixed the potential race with THP collapse by checking
whether PMD is changed or not.  So IPI broadcast in radix pmd collapse
flush is not necessary anymore.  But it is still needed for hash TLB.

Link: https://lkml.kernel.org/r/20220907180144.555485-2-shy828301@gmail.com
Suggested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Yang Shi <shy828301@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

2022-09-26 12:14:33 -07:00

..

book3s32

powerpc/32: Set an IBAT covering up to _einittext during init

2022-07-27 21:36:05 +10:00

book3s64

powerpc/64s/radix: don't need to broadcast IPI for radix pmd collapse flush

2022-09-26 12:14:33 -07:00

kasan

powerpc/32s: Fix boot failure with KASAN + SMP + JUMP_LABEL_FEATURE_CHECK_DEBUG

2022-07-27 21:36:05 +10:00

nohash

powerpc/44x: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')

2022-07-27 21:36:06 +10:00

ptdump

powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E

2022-06-29 17:03:42 +10:00

cacheflush.c

powerpc: Fix all occurences of "the the"

2022-05-22 15:59:43 +10:00

copro_fault.c

mm: avoid unnecessary page fault retires on shared memory types

2022-06-16 19:48:27 -07:00

dma-noncoherent.c

dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h>

2020-10-06 07:07:06 +02:00

drmem.c

powerpc: Add missing headers

2022-05-08 22:15:40 +10:00

fault.c

mm: avoid unnecessary page fault retires on shared memory types

2022-06-16 19:48:27 -07:00

hugetlbpage.c

powerpc: Include asm/firmware.h in all users of firmware_has_feature()

2022-06-29 16:45:05 +10:00

init_32.c

powerpc/32: Remove __map_without_ltlbs

2022-06-29 16:59:06 +10:00

init_64.c

Merge branch 'topic/ppc-kvm' into next

2022-05-19 23:10:42 +10:00

init-common.c

powerpc/kuep: Remove 'nosmep' boot time parameter except for book3s/64

2021-12-09 22:41:18 +11:00

ioremap_32.c

powerpc/mm: Leave a gap between early allocated IO areas

2021-06-25 00:07:10 +10:00

ioremap_64.c

powerpc/mm: Leave a gap between early allocated IO areas

2021-06-25 00:07:10 +10:00

ioremap.c

powerpc: make memremap_compat_align 64s-only

2021-12-02 22:57:24 +11:00

maccess.c

powerpc/inst: Optimise copy_inst_from_kernel_nofault()

2021-12-09 22:41:21 +11:00

Makefile

powerpc/mm: Convert to default topdown mmap layout

2022-05-05 22:11:58 +10:00

mem.c

Merge tag 'cxl-for-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

2022-08-10 11:07:26 -07:00

mmu_context.c

powerpc/mm: Switch obsolete dssall to .long

2021-12-23 22:35:13 +11:00

mmu_decl.h

powerpc/32: Remove the 'nobats' kernel parameter

2022-06-29 16:59:06 +10:00

numa.c

powerpc/numa: Associate numa node to its cpu earlier

2022-05-22 15:58:30 +10:00

pageattr.c

powerpc: align address to page boundary in change_page_attr()

2022-05-08 22:15:41 +10:00

pgtable_32.c

powerpc/32: Call mmu_mark_initmem_nx() regardless of data block mapping.

2022-07-27 21:36:05 +10:00

pgtable_64.c

powerpc: Remove asm/prom.h from all files that don't need it

2022-05-08 22:15:04 +10:00

pgtable-frag.c

powerpc: fix typos in comments

2022-05-05 22:12:44 +10:00

pgtable.c

powerpc/mm: move protection_map[] inside the platform

2022-07-17 17:14:37 -07:00