aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorFrederic Weisbecker <[email protected]>2020-11-17 16:16:37 +0100
committerPeter Zijlstra <[email protected]>2020-11-19 11:25:42 +0100
commitd1f250e2205eca9f1264f8e2d3a41fcf38f92d91 (patch)
tree9909e949a13f72a235cb30071f4aef5eef189879
parent6775de4984ea83ce39f19a40c09f8813d7423831 (diff)
x86: Support HAVE_CONTEXT_TRACKING_OFFSTACK
A lot of ground work has been performed on x86 entry code. Fragile path between user_enter() and user_exit() have IRQs disabled. Uses of RCU and intrumentation in these fragile areas have been explicitly annotated and protected. This architecture doesn't need exception_enter()/exception_exit() anymore and has therefore earned CONFIG_HAVE_CONTEXT_TRACKING_OFFSTACK. Signed-off-by: Frederic Weisbecker <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
-rw-r--r--arch/x86/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f6946b81f74a..d793361839b5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -162,6 +162,7 @@ config X86
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
select HAVE_CONTEXT_TRACKING if X86_64
+ select HAVE_CONTEXT_TRACKING_OFFSTACK if HAVE_CONTEXT_TRACKING
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_CONTIGUOUS