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3ad0e83cf8
Pull parisc fixes from Helge Deller: "On parisc we were still seeing occasional random segmentation faults and memory corruption on SMP machines. Dave Anglin then looked again at the TLB related code and found two issues in the PCI DMA and generic TLB flush functions. Then, in our startup code we had some timing of the cache and TLB functions to calculate a threshold when to use a complete TLB/cache flush or just to flush a specific range. This code produced a race with newly started CPUs and thus lead to occasional kernel crashes (due to stale TLB/cache entries). The patch by Dave fixes this issue by flushing the local caches before starting secondary CPUs and by removing the race. The last problem fixed by this series is that we quite often suffered from hung tasks and self-detected stalls on the CPUs. It was somehow clear that this was related to the (in v4.7) newly introduced cr16 clocksource and the own implementation of sched_clock(). I replaced the open-coded sched_clock() function and switched to the generic sched_clock() implementation which seems to have fixed this isse as well. All patches have been sucessfully tested on a variety of machines, including our debian buildd servers. All patches (beside the small pr_cont fix) are tagged for stable releases" * 'parisc-4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Also flush data TLB in flush_icache_page_asm parisc: Fix race in pci-dma.c parisc: Switch to generic sched_clock implementation parisc: Fix races in parisc_setup_cache_timing() parisc: Fix printk continuations in system detection |
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