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>
mariux64 · Jul 19, 2018 · af1fc5b · af1fc5b
1 parent 93312b6
commit af1fc5b
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 1 deletion.
diff --git 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
@@ -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