https://github.com/torvalds/linux
Revision 4e562c11664c0e0e84bb8495894b8637acc1c095 authored by Guo Ren on 18 June 2019, 12:34:35 UTC, committed by Guo Ren on 19 July 2019, 06:21:36 UTC
There are two generations of tlb operation instruction for C-SKY.
First generation is use mcr register and it need software do more
things, second generation is use specific instructions, eg:
 tlbi.va, tlbi.vas, tlbi.alls

We implemented the following functions:

 - flush_tlb_range (a range of entries)
 - flush_tlb_page (one entry)

 Above functions use asid from vma->mm to invalid tlb entries and
 we could use tlbi.vas instruction for newest generation csky cpu.

 - flush_tlb_kernel_range
 - flush_tlb_one

 Above functions don't care asid and it invalid the tlb entries only
 with vpn and we could use tlbi.vaas instruction for newest generat-
 ion csky cpu.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
1 parent 22d55f0
History
Tip revision: 4e562c11664c0e0e84bb8495894b8637acc1c095 authored by Guo Ren on 18 June 2019, 12:34:35 UTC
csky: Improve tlb operation with help of asid
Tip revision: 4e562c1
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include
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ipc
kernel
lib
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usr
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.clang-format -rw-r--r-- 14.6 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 30 bytes
.gitignore -rw-r--r-- 1.6 KB
.mailmap -rw-r--r-- 12.0 KB
COPYING -rw-r--r-- 423 bytes
CREDITS -rw-r--r-- 97.2 KB
Kbuild -rw-r--r-- 1.5 KB
Kconfig -rw-r--r-- 563 bytes
MAINTAINERS -rw-r--r-- 500.4 KB
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README -rw-r--r-- 727 bytes

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