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| author |   Vineet Gupta <vgupta@synopsys.com> | 2018-07-17 15:21:56 -0700 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2018-07-19 10:36:45 -0700 |
| commit | af1fc5baa724c63ce1733dfcf855bad5ef6078e3 (patch) | |
| tree | a947ac298a5d3224bc2ac2c2020b85142f267ae9 /arch | |
| parent | ARC: mm: allow mprotect to make stack mappings executable (diff) | |
| download | linux-dev-af1fc5baa724c63ce1733dfcf855bad5ef6078e3.tar.xz linux-dev-af1fc5baa724c63ce1733dfcf855bad5ef6078e3.zip | |
ARCv2: [plat-hsdk]: Save accl reg pair by default
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>
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 556bc5ef1257..9356753c2ed8 100644 --- a/arch/arc/plat-hsdk/Kconfig +++ b/arch/arc/plat-hsdk/Kconfig @@ -7,6 +7,8 @@ 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 select MIGHT_HAVE_PCI |