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| author |   Vineet Gupta <vgupta@synopsys.com> | 2016-03-15 11:36:43 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2016-03-15 16:04:44 +0530 |
| commit | b31ac42697bef4a3aa5d0aa42375a55657f57174 (patch) | |
| tree | 8aaa78c949e9e3ba66d4ed7c900d990af662c70e /arch/arc | |
| parent | ARC: mm: Use virt_to_pfn() for addr >> PAGE_SHIFT pattern (diff) | |
| download | linux-dev-b31ac42697bef4a3aa5d0aa42375a55657f57174.tar.xz linux-dev-b31ac42697bef4a3aa5d0aa42375a55657f57174.zip | |
ARCv2: LLSC: software backoff is NOT needed starting HS2.1c
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arc/kernel/setup.c | 5 |
2 files changed, 1 insertions, 6 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 7981ea86c5bd..8ce092801221 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -387,7 +387,7 @@ config ARC_HAS_LLSC config ARC_STAR_9000923308 bool "Workaround for llock/scond livelock" - default y + default n depends on ISA_ARCV2 && SMP && ARC_HAS_LLSC config ARC_HAS_SWAPE diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index cdc821df1809..fa1fa9aa0e0b 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -357,11 +357,6 @@ static void arc_chk_core_config(void) pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n"); else if (!cpu->extn.fpu_dp && fpu_enabled) 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"); } /* |