diff options
| author | Hou Wenlong <houwenlong.hwl@antgroup.com> | 2022-10-10 20:19:12 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-01-24 10:05:45 -0800 |
| commit | c667a3baeddcc982bf512c126aec8d0f04adecfe (patch) | |
| tree | b284603f20aa0a18506aef3485a02863de0014d4 /arch/x86/kvm/mmu/tdp_iter.c | |
| parent | a7e48ef77ff27ba2647edec271b302804a0b14c3 (diff) | |
KVM: x86/mmu: Move round_gfn_for_level() helper into mmu_internal.h
Rounding down the GFN to a huge page size is a common pattern throughout
KVM, so move round_gfn_for_level() helper in tdp_iter.c to
mmu_internal.h for common usage. Also rename it as gfn_round_for_level()
to use gfn_* prefix and clean up the other call sites.
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Link: https://lore.kernel.org/r/415c64782f27444898db650e21cf28eeb6441dfa.1665214747.git.houwenlong.hwl@antgroup.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/mmu/tdp_iter.c')
| -rw-r--r-- | arch/x86/kvm/mmu/tdp_iter.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/x86/kvm/mmu/tdp_iter.c b/arch/x86/kvm/mmu/tdp_iter.c index e26e744df1d1..d2eb0d4f8710 100644 --- a/arch/x86/kvm/mmu/tdp_iter.c +++ b/arch/x86/kvm/mmu/tdp_iter.c @@ -16,11 +16,6 @@ static void tdp_iter_refresh_sptep(struct tdp_iter *iter) iter->old_spte = kvm_tdp_mmu_read_spte(iter->sptep); } -static gfn_t round_gfn_for_level(gfn_t gfn, int level) -{ - return gfn & -KVM_PAGES_PER_HPAGE(level); -} - /* * Return the TDP iterator to the root PT and allow it to continue its * traversal over the paging structure from there. @@ -31,7 +26,7 @@ void tdp_iter_restart(struct tdp_iter *iter) iter->yielded_gfn = iter->next_last_level_gfn; iter->level = iter->root_level; - iter->gfn = round_gfn_for_level(iter->next_last_level_gfn, iter->level); + iter->gfn = gfn_round_for_level(iter->next_last_level_gfn, iter->level); tdp_iter_refresh_sptep(iter); iter->valid = true; @@ -98,7 +93,7 @@ static bool try_step_down(struct tdp_iter *iter) iter->level--; iter->pt_path[iter->level - 1] = child_pt; - iter->gfn = round_gfn_for_level(iter->next_last_level_gfn, iter->level); + iter->gfn = gfn_round_for_level(iter->next_last_level_gfn, iter->level); tdp_iter_refresh_sptep(iter); return true; @@ -140,7 +135,7 @@ static bool try_step_up(struct tdp_iter *iter) return false; iter->level++; - iter->gfn = round_gfn_for_level(iter->gfn, iter->level); + iter->gfn = gfn_round_for_level(iter->gfn, iter->level); tdp_iter_refresh_sptep(iter); return true; |