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| author | Hou Wenlong <houwenlong.hwl@antgroup.com> | 2022-10-10 15:19:12 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-01-24 21:05:45 +0300 |
| commit | c667a3baeddcc982bf512c126aec8d0f04adecfe (patch) | |
| tree | b284603f20aa0a18506aef3485a02863de0014d4 /arch/x86/kvm/mmu/mmu_internal.h | |
| parent | a7e48ef77ff27ba2647edec271b302804a0b14c3 (diff) | |
| download | linux-c667a3baeddcc982bf512c126aec8d0f04adecfe.tar.xz | |
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/mmu_internal.h')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu_internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h index ac00bfbf32f6..486be0f9fe16 100644 --- a/arch/x86/kvm/mmu/mmu_internal.h +++ b/arch/x86/kvm/mmu/mmu_internal.h @@ -156,6 +156,11 @@ static inline bool kvm_mmu_page_ad_need_write_protect(struct kvm_mmu_page *sp) return kvm_x86_ops.cpu_dirty_log_size && sp->role.guest_mode; } +static inline gfn_t gfn_round_for_level(gfn_t gfn, int level) +{ + return gfn & -KVM_PAGES_PER_HPAGE(level); +} + int mmu_try_to_unsync_pages(struct kvm *kvm, const struct kvm_memory_slot *slot, gfn_t gfn, bool can_unsync, bool prefetch); |