The following commit has been merged into the core/entry branch of tip: Commit-ID: d1f250e2205eca9f1264f8e2d3a41fcf38f92d91 Gitweb: https://git.kernel.org/tip/d1f250e2205eca9f1264f8e2d3a41fcf38f92d91 Author: Frederic Weisbecker <frederic@xxxxxxxxxx> AuthorDate: Tue, 17 Nov 2020 16:16:37 +01:00 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Thu, 19 Nov 2020 11:25:42 +01:00 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 <frederic@xxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Link: https://lkml.kernel.org/r/20201117151637.259084-6-frederic@xxxxxxxxxx --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f6946b8..d793361 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
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