diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-03-16 00:38:03 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-03-16 19:16:34 +0100 |
| commit | 08889894cc82bc3b213bdb192f274358e5a6b78d (patch) | |
| tree | 78145b0f09f4a5e0a4ca0d296911a21f1101efc5 /arch/x86/kvm/mmu/tdp_iter.c | |
| parent | KVM: x86/mmu: Factor out tdp_iter_return_to_root (diff) | |
| download | linux-08889894cc82bc3b213bdb192f274358e5a6b78d.tar.xz linux-08889894cc82bc3b213bdb192f274358e5a6b78d.zip | |
KVM: x86/mmu: Store the address space ID in the TDP iterator
Store the address space ID in the TDP iterator so that it can be
retrieved without having to bounce through the root shadow page. This
streamlines the code and fixes a Sparse warning about not properly using
rcu_dereference() when grabbing the ID from the root on the fly.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20210315233803.2706477-5-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 | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/x86/kvm/mmu/tdp_iter.c b/arch/x86/kvm/mmu/tdp_iter.c index f7f94ea65243..b3ed302c1a35 100644 --- a/arch/x86/kvm/mmu/tdp_iter.c +++ b/arch/x86/kvm/mmu/tdp_iter.c @@ -49,6 +49,7 @@ void tdp_iter_start(struct tdp_iter *iter, u64 *root_pt, int root_level, iter->root_level = root_level; iter->min_level = min_level; iter->pt_path[iter->root_level - 1] = (tdp_ptep_t)root_pt; + iter->as_id = kvm_mmu_page_as_id(sptep_to_sp(root_pt)); tdp_iter_restart(iter); } @@ -169,8 +170,3 @@ void tdp_iter_next(struct tdp_iter *iter) iter->valid = false; } -tdp_ptep_t tdp_iter_root_pt(struct tdp_iter *iter) -{ - return iter->pt_path[iter->root_level - 1]; -} - |