diff options
Diffstat (limited to 'arch/arm64/kvm/mmu.c')
| -rw-r--r-- | arch/arm64/kvm/mmu.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 070a01e53fcb..17d64a1e11e5 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1751,17 +1751,16 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, force_pte = (max_map_size == PAGE_SIZE); vma_pagesize = min_t(long, vma_pagesize, max_map_size); + vma_shift = __ffs(vma_pagesize); } /* - * Both the canonical IPA and fault IPA must be hugepage-aligned to - * ensure we find the right PFN and lay down the mapping in the right - * place. + * Both the canonical IPA and fault IPA must be aligned to the + * mapping size to ensure we find the right PFN and lay down the + * mapping in the right place. */ - if (vma_pagesize == PMD_SIZE || vma_pagesize == PUD_SIZE) { - fault_ipa &= ~(vma_pagesize - 1); - ipa &= ~(vma_pagesize - 1); - } + fault_ipa = ALIGN_DOWN(fault_ipa, vma_pagesize); + ipa = ALIGN_DOWN(ipa, vma_pagesize); gfn = ipa >> PAGE_SHIFT; mte_allowed = kvm_vma_mte_allowed(vma); @@ -1839,10 +1838,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, if (exec_fault && s2_force_noncacheable) ret = -ENOEXEC; - if (ret) { - kvm_release_page_unused(page); - return ret; - } + if (ret) + goto out_put_page; /* * Guest performs atomic/exclusive operations on memory with unsupported @@ -1852,7 +1849,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, */ if (esr_fsc_is_excl_atomic_fault(kvm_vcpu_get_esr(vcpu))) { kvm_inject_dabt_excl_atomic(vcpu, kvm_vcpu_get_hfar(vcpu)); - return 1; + ret = 1; + goto out_put_page; } if (nested) @@ -1938,6 +1936,10 @@ out_unlock: mark_page_dirty_in_slot(kvm, memslot, gfn); return ret != -EAGAIN ? ret : 0; + +out_put_page: + kvm_release_page_unused(page); + return ret; } /* Resolve the access fault by making the page young again. */ |