diff options
| author | Ben Gardon <bgardon@google.com> | 2020-10-14 21:26:47 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-22 01:17:02 +0300 |
| commit | faaf05b00aecdb347ffd1d763d024394ec0329f8 (patch) | |
| tree | 6054d3a1c0128da3113bb8b7250fed3b17385909 /arch/x86/kvm/mmu/tdp_iter.c | |
| parent | 9e9eb226b91225fc199bbafc06f3cd70bfce0100 (diff) | |
| download | linux-faaf05b00aecdb347ffd1d763d024394ec0329f8.tar.xz | |
kvm: x86/mmu: Support zapping SPTEs in the TDP MMU
Add functions to zap SPTEs to the TDP MMU. These are needed to tear down
TDP MMU roots properly and implement other MMU functions which require
tearing down mappings. Future patches will add functions to populate the
page tables, but as for this patch there will not be any work for these
functions to do.
Tested by running kvm-unit-tests and KVM selftests on an Intel Haswell
machine. This series introduced no new failures.
This series can be viewed in Gerrit at:
https://linux-review.googlesource.com/c/virt/kvm/kvm/+/2538
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20201014182700.2888246-8-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/tdp_iter.c')
| -rw-r--r-- | arch/x86/kvm/mmu/tdp_iter.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/tdp_iter.c b/arch/x86/kvm/mmu/tdp_iter.c index ad2184cb054c..87b7e16911db 100644 --- a/arch/x86/kvm/mmu/tdp_iter.c +++ b/arch/x86/kvm/mmu/tdp_iter.c @@ -175,3 +175,8 @@ void tdp_iter_refresh_walk(struct tdp_iter *iter) iter->root_level, iter->min_level, goal_gfn); } +u64 *tdp_iter_root_pt(struct tdp_iter *iter) +{ + return iter->pt_path[iter->root_level - 1]; +} + |