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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-01-08 12:24:39 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-01-27 20:00:03 +0100 |
| commit | 13c72c060f1ba6f4eddd7b1c4f52a8aded43d6d9 (patch) | |
| tree | c0043704b8ec370deff286db8bbaa8f8ebed74dd /arch/x86/kvm/mmu/mmu.c | |
| parent | 42cde48b2d39772dba47e680781a32a6c4b7dc33 (diff) | |
| download | lwn-13c72c060f1ba6f4eddd7b1c4f52a8aded43d6d9.tar.gz lwn-13c72c060f1ba6f4eddd7b1c4f52a8aded43d6d9.zip | |
x86/mm: Introduce lookup_address_in_mm()
Add a helper, lookup_address_in_mm(), to traverse the page tables of a
given mm struct. KVM will use the helper to retrieve the host mapping
level, e.g. 4k vs. 2mb vs. 1gb, of a compound (or DAX-backed) page
without having to resort to implementation specific metadata. E.g. KVM
currently uses different logic for HugeTLB vs. THP, and would add a
third variant for DAX-backed files.
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/mmu.c')
0 files changed, 0 insertions, 0 deletions