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| author | James Hogan <james.hogan@imgtec.com> | 2016-12-16 16:57:00 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2017-02-03 16:20:55 +0100 |
| commit | a31b50d741bd85a127d5ef2c21c0788041bc41a9 (patch) | |
| tree | e67fc587b0eb2d038b20f3b9b67be6a5bdf868b5 /mm/truncate.c | |
| parent | KVM: MIPS/TLB: Generalise host TLB invalidate to kernel ASID (diff) | |
| download | linux-a31b50d741bd85a127d5ef2c21c0788041bc41a9.tar.xz linux-a31b50d741bd85a127d5ef2c21c0788041bc41a9.zip | |
KVM: MIPS/MMU: Invalidate GVA PTs on ASID changes
Implement invalidation of large ranges of virtual addresses from GVA
page tables in response to a guest ASID change (immediately for guest
kernel page table, lazily for guest user page table).
We iterate through a range of page tables invalidating entries and
freeing fully invalidated tables. To minimise overhead the exact ranges
invalidated depends on the flags argument to kvm_mips_flush_gva_pt(),
which also allows it to be used in future KVM_CAP_SYNC_MMU patches in
response to GPA changes, which unlike guest TLB mapping changes affects
guest KSeg0 mappings.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Diffstat (limited to 'mm/truncate.c')
0 files changed, 0 insertions, 0 deletions