Messages in this thread | | | Subject | Re: [PATCH] x86/mm: disable preemption during CR3 read+write | From | Sebastian Andrzej Siewior <> | Date | Fri, 5 Aug 2016 17:52:38 +0200 |
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On 08/05/2016 05:42 PM, Andy Lutomirski wrote: > > This should affect kernel threads too, right?
I don't think so because they don't have a MM in the first place so they don't shouldn't need to flush a TLB. But then there is iounmap() and vfree() for instance which does
vmap_debug_free_range() { if (debug_pagealloc_enabled()) { vunmap_page_range(start, end); flush_tlb_kernel_range(start, end); } }
so it looks like a candidate.
> Acked-by: Andy Lutomirski <luto@kernel.org>
Sebastian
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