Messages in this thread | | | Subject | Re: [PATCH 1/2] mm: Add kernel MMU notifier to manage IOTLB/DEVTLB | From | Dave Hansen <> | Date | Wed, 13 Dec 2017 22:28:37 -0800 |
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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?
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