[lkml]   [2017]   [Dec]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 1/2] mm: Add kernel MMU notifier to manage IOTLB/DEVTLB
On 12/13/2017 07:38 PM, Lu Baolu wrote:
> 2. When vmalloc/vfree interfaces are called, the page mappings
> for kernel memory might get changed. And current code calls
> flush_tlb_kernel_range() to flush CPU TLBs only. The IOTLB or
> DevTLB will be stale compared to that on the cpu for kernel
> mappings.

What's the plan to deal with all of the ways other than vmalloc() that
the kernel changes the page tables?

 \ /
  Last update: 2017-12-14 07:29    [W:0.109 / U:1.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site