Huang Pei f685a533a7 MIPS: make userspace mapping young by default ...

MIPS page fault path(except huge page) takes 3 exceptions (1 TLB Miss + 2
TLB Invalid), butthe second TLB Invalid exception is just triggered by
__update_tlb from do_page_fault writing tlb without _PAGE_VALID set.  With
this patch, user space mapping prot is made young by default (with both
_PAGE_VALID and _PAGE_YOUNG set), and it only take 1 TLB Miss + 1 TLB
Invalid exception

Remove pte_sw_mkyoung without polluting MM code and make page fault delay
of MIPS on par with other architecture

Link: https://lkml.kernel.org/r/20210204013942.8398-1-huangpei@loongson.cn
Signed-off-by: Huang Pei <huangpei@loongson.cn>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: <huangpei@loongson.cn>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: <ambrosehua@gmail.com>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Li Xuefeng <lixuefeng@loongson.cn>
Cc: Yang Tiezhu <yangtiezhu@loongson.cn>
Cc: Gao Juxin <gaojuxin@loongson.cn>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2021-02-26 09:41:05 -08:00

..

c-octeon.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

c-r3k.c

mm: pgtable: add shortcuts for accessing kernel PMD and PTE

2020-06-09 09:39:13 -07:00

c-r4k.c

driver core: lift dma_default_coherent into common code

2021-02-13 09:51:45 +01:00

c-tx39.c

mm: pgtable: add shortcuts for accessing kernel PMD and PTE

2020-06-09 09:39:13 -07:00

cache.c

MIPS: make userspace mapping young by default

2021-02-26 09:41:05 -08:00

cerr-sb1.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00

cex-gen.S

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cex-oct.S

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

cex-sb1.S

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00

context.c

MIPS: Export mm switching functions used by KVM

2019-02-05 11:44:44 -08:00

dma-noncoherent.c

MIPS: remove CONFIG_DMA_PERDEV_COHERENT

2021-02-13 09:51:46 +01:00

extable.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

fault.c

MIPS: mm: abort uaccess retries upon fatal signal

2021-01-22 11:34:19 +01:00

highmem.c

mips/mm/highmem: Switch to generic kmap atomic

2020-11-06 23:14:56 +01:00

hugetlbpage.c

MIPS: mm: Remove unused is_aligned_hugepage_range

2020-11-27 10:53:32 +01:00

init.c

MIPS: Remove empty prom_free_prom_memory functions

2021-01-07 17:11:33 +01:00

ioremap64.c

MIPS: move ioremap_prot und iounmap out of line

2020-04-19 16:12:31 +02:00

ioremap.c

MIPS: use ioremap_page_range

2020-04-19 16:13:18 +02:00

Makefile

MIPS: move ioremap_prot und iounmap out of line

2020-04-19 16:12:31 +02:00

mmap.c

mips: use generic mmap top-down layout and brk randomization

2019-09-24 15:54:12 -07:00

page-funcs.S

MIPS: Export {copy, clear}_page functions alongside their definitions

2017-01-03 16:48:39 +01:00

page.c

MIPS: Convert R4600_V2_HIT_CACHEOP into a config option

2020-09-07 22:23:48 +02:00

pgtable-32.c

MIPS: do not call flush_tlb_all when setting pmd entry

2021-02-24 13:38:32 -08:00

pgtable-64.c

MIPS: do not call flush_tlb_all when setting pmd entry

2021-02-24 13:38:32 -08:00

pgtable.c

MIPS: Move pgd_alloc() out of header

2017-02-02 15:06:26 +00:00

sc-debugfs.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

sc-ip22.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

sc-mips.c

mips: fix Section mismatch in reference

2020-12-14 16:39:42 +01:00

sc-r5k.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

sc-rm7k.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tlb-funcs.S

MIPS: Consistently declare TLB functions

2018-08-10 17:27:53 -07:00

tlb-r3k.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

tlb-r4k.c

MIPS: export has_transparent_hugepage() for modules

2020-10-27 12:44:34 +01:00

tlbex-fault.S

MIPS: Add DWARF unwinding to assembly

2017-09-06 11:01:52 +02:00

tlbex.c

Revert "MIPS: Remove unused R4300 CPU support"

2021-01-22 11:39:45 +01:00

uasm-micromips.c

mips: bpf: implement jitting of BPF_ALU | BPF_ARSH | BPF_X

2018-12-07 13:30:48 -08:00

uasm-mips.c

MIPS: uasm: Add div, mul and sel instructions for mipsr6

2019-03-19 15:26:06 -07:00

uasm.c

MIPS: Get rid of CAVIUM_OCTEON_DCACHE_PREFETCH_WAR

2020-09-07 22:25:16 +02:00