| From 4d0cb15fccd1db9dac0c964b2ccf10874e69f5b8 Mon Sep 17 00:00:00 2001 |
| From: Vineet Gupta <vgupta@synopsys.com> |
| Date: Fri, 29 Jan 2016 16:47:44 +0530 |
| Subject: ARCv2: Check for LL-SC livelock only if LLSC is enabled |
| |
| From: Vineet Gupta <vgupta@synopsys.com> |
| |
| commit 4d0cb15fccd1db9dac0c964b2ccf10874e69f5b8 upstream. |
| |
| Signed-off-by: Vineet Gupta <vgupta@synopsys.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| arch/arc/kernel/setup.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/arch/arc/kernel/setup.c |
| +++ b/arch/arc/kernel/setup.c |
| @@ -334,6 +334,7 @@ static void arc_chk_core_config(void) |
| panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n"); |
| |
| if (is_isa_arcv2() && IS_ENABLED(CONFIG_SMP) && cpu->isa.atomic && |
| + IS_ENABLED(CONFIG_ARC_HAS_LLSC) && |
| !IS_ENABLED(CONFIG_ARC_STAR_9000923308)) |
| panic("llock/scond livelock workaround missing\n"); |
| } |
