diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2018-07-18 01:21:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-25 12:26:07 +0300 |
| commit | d68ac6cba419abaae331112261388dcff0ea1fd1 (patch) | |
| tree | 5fe0c8ff854abfbf78e423798bf16d8ae702ff60 /arch | |
| parent | e98863e74502b6c0656d79f16ec04e9042866659 (diff) | |
| download | linux-d68ac6cba419abaae331112261388dcff0ea1fd1.tar.xz | |
ARCv2: [plat-hsdk]: Save accl reg pair by default
commit af1fc5baa724c63ce1733dfcf855bad5ef6078e3 upstream.
This manifsted as strace segfaulting on HSDK because gcc was targetting
the accumulator registers as GPRs, which kernek was not saving/restoring
by default.
Cc: stable@vger.kernel.org #4.14+
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arc/plat-hsdk/Kconfig | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index d76bf4a83740..bc0bcf01ec98 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -408,7 +408,7 @@ config ARC_HAS_DIV_REM config ARC_HAS_ACCL_REGS bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6)" - default n + default y help Depending on the configuration, CPU can contain accumulator reg-pair (also referred to as r58:r59). These can also be used by gcc as GPR so diff --git a/arch/arc/plat-hsdk/Kconfig b/arch/arc/plat-hsdk/Kconfig index 19ab3cf98f0f..fcc9a9e27e9c 100644 --- a/arch/arc/plat-hsdk/Kconfig +++ b/arch/arc/plat-hsdk/Kconfig @@ -7,5 +7,7 @@ menuconfig ARC_SOC_HSDK bool "ARC HS Development Kit SOC" + depends on ISA_ARCV2 + select ARC_HAS_ACCL_REGS select CLK_HSDK select RESET_HSDK |