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Jose Abreu 57e4f87ebe ARC: Re-enable MMU upon Machine Check exception ... commit 1ee55a8f7f upstream. I recently came upon a scenario where I would get a double fault machine check exception tiriggered by a kernel module. However the ensuing crash stacktrace (ksym lookup) was not working correctly. Turns out that machine check auto-disables MMU while modules are allocated in kernel vaddr spapce. This patch re-enables the MMU before start printing the stacktrace making stacktracing of modules work upon a fatal exception. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> [vgupta: moved code into low level handler to avoid in 2 places] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2017-09-27 14:39:23 +02:00
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cache.c	ARCv2: PAE40: Explicitly set MSB counterpart of SLC region ops addresses	2017-08-30 10:21:46 +02:00
dma.c	arc: Implement arch-specific dma_map_ops.mmap	2016-11-03 10:01:07 -07:00
extable.c	ARC: Fix coding style issues	2013-04-09 12:21:14 +05:30
fault.c	mm: do not pass mm_struct into handle_mm_fault	2016-07-26 16:19:19 -07:00
highmem.c	ARC: export kmap	2016-08-19 10:45:29 -07:00
init.c	treewide: replace obsolete _refok by __ref	2016-08-02 17:31:41 -04:00
ioremap.c	ARCv2: Support dynamic peripheral address space in HS38 rel 3.0 cores	2016-09-30 14:48:17 -07:00
Makefile	ARC: mm: HIGHMEM: kmap API implementation	2015-10-28 19:49:04 +05:30
mmap.c	mm: larger stack guard gap, between vmas	2017-06-24 07:11:18 +02:00
tlb.c	ARC: Re-enable MMU upon Machine Check exception	2017-09-27 14:39:23 +02:00
tlbex.S	ARC: mm: retire ARC_DBG_TLB_MISS_COUNT...	2016-10-28 10:10:28 -07:00