From 35528876a92917b60c20077121e5c6805936cd7d Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 5 May 2020 12:47:19 +0530 Subject: powerpc/kvm/book3s: Add helper for host page table walk Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200505071729.54912-13-aneesh.kumar@linux.ibm.com --- arch/powerpc/include/asm/kvm_book3s_64.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'arch/powerpc/include/asm/kvm_book3s_64.h') diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 2860521992b6..1ca1f6495012 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -647,6 +647,22 @@ static inline pte_t *find_kvm_secondary_pte(struct kvm *kvm, unsigned long ea, return pte; } +static inline pte_t *find_kvm_host_pte(struct kvm *kvm, unsigned long mmu_seq, + unsigned long ea, unsigned *hshift) +{ + pte_t *pte; + + VM_WARN(!spin_is_locked(&kvm->mmu_lock), + "%s called with kvm mmu_lock not held \n", __func__); + + if (mmu_notifier_retry(kvm, mmu_seq)) + return NULL; + + pte = __find_linux_pte(kvm->mm->pgd, ea, NULL, hshift); + + return pte; +} + extern pte_t *find_kvm_nested_guest_pte(struct kvm *kvm, unsigned long lpid, unsigned long ea, unsigned *hshift); -- cgit v1.2.3-59-g8ed1b