Patch "ARCv2: Check for LL-SC livelock only if LLSC is enabled" has been added to the 4.4-stable tree
From: <gregkh@linuxfoundation.org>
Date: 2016-07-13 22:47:24
This is a note to let you know that I've just added the patch titled
ARCv2: Check for LL-SC livelock only if LLSC is enabled
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arcv2-check-for-ll-sc-livelock-only-if-llsc-is-enabled.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let [off-list ref] know about it.
From 4d0cb15fccd1db9dac0c964b2ccf10874e69f5b8 Mon Sep 17 00:00:00 2001
From: Vineet Gupta <redacted> Date: Fri, 29 Jan 2016 16:47:44 +0530 Subject: ARCv2: Check for LL-SC livelock only if LLSC is enabled From: Vineet Gupta <redacted> commit 4d0cb15fccd1db9dac0c964b2ccf10874e69f5b8 upstream. Signed-off-by: Vineet Gupta <redacted> 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"); }
Patches currently in stable-queue which might be from vgupta@synopsys.com are queue-4.4/arcv2-check-for-ll-sc-livelock-only-if-llsc-is-enabled.patch queue-4.4/arcv2-llsc-software-backoff-is-not-needed-starting-hs2.1c.patch