path: root/Documentation
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authorPeter Zijlstra <peterz@infradead.org>2013-06-05 12:26:50 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2013-06-06 10:07:26 +0900
commit29eb77825cc7da8d45b642de2de3d423dc8a363f (patch)
tree689c3c9f8b34f8023899ba8c230ea04c4dc21e54 /Documentation
parent2c95523c0f0ca7c2f157a07f0c03b6bbba13fee6 (diff)
arch, mm: Remove tlb_fast_mode()
Since the introduction of preemptible mmu_gather TLB fast mode has been broken. TLB fast mode relies on there being absolutely no concurrency; it frees pages first and invalidates TLBs later. However now we can get concurrency and stuff goes *bang*. This patch removes all tlb_fast_mode() code; it was found the better option vs trying to patch the hole by entangling tlb invalidation with the scheduler. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Tony Luck <tony.luck@intel.com> Reported-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
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