linux-stable/arch/csky/abiv2
Guo Ren aefd9461d3 csky: Fixup cpu speculative execution to IO area
For the memory size ( > 512MB, < 1GB), the MSA setting is:

 - SSEG0: PHY_START        , PHY_START + 512MB
 - SSEG1: PHY_START + 512MB, PHY_START + 1GB

But the real memory is no more than 1GB, there is a gap between the
end size of memory and border of 1GB. CPU could speculatively
execute to that gap and if the gap of the bus couldn't respond to
the CPU request, then the crash will happen.

Now make the setting with:

 - SSEG0: PHY_START        , PHY_START + 512MB (no change)
 - SSEG1: Disabled (We use highmem to use the memory of 512MB~1GB)

We also deprecated zhole_szie[] settings, it's only used by arm
style CPUs. All memory gap should use Reserved setting of dts in
csky system.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
2020-04-03 12:40:07 +08:00
..
inc/abi csky: Fixup cpu speculative execution to IO area 2020-04-03 12:40:07 +08:00
cacheflush.c csky: Add flush_icache_mm to defer flush icache all 2020-02-21 15:43:24 +08:00
fpu.c csky: Fixup init_fpu compile warning with __init 2020-03-08 20:55:14 +08:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mcount.S csky: Implement ftrace with regs 2020-03-08 20:55:14 +08:00
memcmp.S csky: Library functions 2018-10-26 00:54:24 +08:00
memcpy.S csky: fixup remove vdsp implement for kernel. 2018-12-31 22:56:59 +08:00
memmove.S csky: Fixup vdsp&fpu issues in kernel 2019-04-22 13:44:57 +08:00
memset.S csky: Library functions 2018-10-26 00:54:24 +08:00
strcmp.S csky: Library functions 2018-10-26 00:54:24 +08:00
strcpy.S csky: Library functions 2018-10-26 00:54:24 +08:00
strksyms.c csky: Library functions 2018-10-26 00:54:24 +08:00
strlen.S csky: Library functions 2018-10-26 00:54:24 +08:00
sysdep.h csky: Library functions 2018-10-26 00:54:24 +08:00