Message ID | 20221019144123.612388-1-mark.rutland@arm.com (mailing list archive) |
---|---|
Headers | show |
Series | arm64: rework UNDEFINED instruction traps | expand |
On Wed, 19 Oct 2022 15:41:14 +0100, Mark Rutland wrote: > This series reworks the way UNDEFINED instruction traps are handled, > removing some dynamic data structure manipulation and related locking. > This makes the code a bit simpler and removes some unnecessary > bottlenecks when traps are handled. > > My original aim for this series was to get rid of the RCU_NONIDLE() call > in cpu_suspend(), requiring the removal of the undef_hook list > manipulation. In the process of looking at that I figured we had a set > of related problems with UNDEF handling and deprecated instruction > handling, which this series addresses. This series does not remove the > RCU_NONIDLE() call from cpu_suspend() as removing that will require > further rework of the suspend code (e.g. for noinstr safety). > > [...] Applied to arm64 (for-next/undef-traps), thanks! [1/9] arm64: allow kprobes on EL0 handlers https://git.kernel.org/arm64/c/5111047c6c82 [2/9] arm64: split EL0/EL1 UNDEF handlers https://git.kernel.org/arm64/c/59a75653d8f9 [3/9] arm64: factor out EL1 SSBS emulation hook https://git.kernel.org/arm64/c/e3bee62254e1 [4/9] arm64: factor insn read out of call_undef_hook() https://git.kernel.org/arm64/c/2bef997bb4d4 [5/9] arm64: rework EL0 MRS emulation https://git.kernel.org/arm64/c/796ab8bb33c5 [6/9] arm64: armv8_deprecated: fold ops into insn_emulation https://git.kernel.org/arm64/c/e86cf2e60826 [7/9] arm64: armv8_deprecated move emulation functions https://git.kernel.org/arm64/c/270af901e2c2 [8/9] arm64: armv8_deprecated: move aarch32 helper earlier https://git.kernel.org/arm64/c/37402c31aa9c [9/9] arm64: armv8_deprecated: rework deprected instruction handling https://git.kernel.org/arm64/c/b6d6c0923f59 Cheers,