Messages in this thread | | | From | Will Deacon <> | Subject | Re: [PATCH 0/2] arm64: fix lockdep in NMI context | Date | Thu, 23 Jun 2022 20:31:41 +0100 |
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On Wed, 11 May 2022 14:17:31 +0100, Mark Rutland wrote: > For lockdep to function correctly in NMI context, architectures need to > correctly save/restore lockdep state at NMI entry/exit time, correctly > manage lockdep state within the NMI context, and need to select > TRACE_IRQFLAGS_NMI_SUPPORT. > > Currently arm64 falls short of this merely by failing to select > TRACE_IRQFLAGS_NMI_SUPPORT, and this can result in spurious lockdep > splats with GICv3 Pseudo-NMIs are in use. Patch 2 has an example. > > [...]
This looks good to me and the x86 changes are trivial (famous last words...), so I've queued the series up on its own branch in the arm64 tree.
Applied to arm64 (for-next/irqflags-nmi), thanks!
[1/2] arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic https://git.kernel.org/arm64/c/4510bffb4d02 [2/2] arm64: select TRACE_IRQFLAGS_NMI_SUPPORT https://git.kernel.org/arm64/c/3381da254fab
Cheers, -- Will
https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev
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