KVM: x86/mmu: Rely on host page tables to find HugeTLB mappings

Browse source

Remove KVM's HugeTLB specific logic and instead rely on walking the host
page tables (already done for THP) to identify HugeTLB mappings.
Eliminating the HugeTLB-only logic avoids taking mmap_sem and calling
find_vma() for all hugepage compatible page faults, and simplifies KVM's
page fault code by consolidating all hugepage adjustments into a common
helper.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Sean Christopherson 2020-01-08 12:24:43 -08:00 • committed by Paolo Bonzini

parent f9fa2509e5

commit 83f06fa7a6

2 changed files with 29 additions and 70 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

84

arch/x86/kvm/mmu/mmu.c

View file

15

arch/x86/kvm/mmu/paging_tmpl.h

View file