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f8e17c17b8
linux/arch/csky
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Guo Ren f8e17c17b8 csky: Set regs->usp to kernel sp, when the exception is from kernel 
In the past, we didn't care about kernel sp when saving pt_reg. But in some
cases, we still need pt_reg->usp to represent the kernel stack before enter
exception.

For cmpxhg in atomic.S, we need save and restore usp for above.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
2020-02-21 15:43:24 +08:00
..
abiv1 csky: Set regs->usp to kernel sp, when the exception is from kernel 2020-02-21 15:43:24 +08:00
abiv2 csky: Set regs->usp to kernel sp, when the exception is from kernel 2020-02-21 15:43:24 +08:00
boot treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
configs
include csky: Separate fixaddr_init from highmem 2020-02-21 15:43:24 +08:00
kernel csky: Set regs->usp to kernel sp, when the exception is from kernel 2020-02-21 15:43:24 +08:00
lib treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mm csky/mm: Fixup export invalid_pte_table symbol 2020-02-21 15:43:24 +08:00
Kconfig csky: Separate fixaddr_init from highmem 2020-02-21 15:43:24 +08:00
Kconfig.debug treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG 2019-06-09 15:08:18 +09:00