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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-05-05 12:47:19 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-05-05 21:20:15 +1000 |
| commit | 35528876a92917b60c20077121e5c6805936cd7d (patch) | |
| tree | 6174cb9cee99c81a47756eec9f97de8e54e2e322 /arch/powerpc/include/asm/kvm_book3s_64.h | |
| parent | powerpc/kvm/book3s: Use kvm helpers to walk shadow or secondary table (diff) | |
| download | linux-dev-35528876a92917b60c20077121e5c6805936cd7d.tar.xz linux-dev-35528876a92917b60c20077121e5c6805936cd7d.zip | |
powerpc/kvm/book3s: Add helper for host page table walk
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200505071729.54912-13-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s_64.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 16 |
1 files changed, 16 insertions, 0 deletions
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); |