From 3ad26d8139a82b0510b1e0435ee82ae461d33401 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Wed, 23 Dec 2009 14:35:20 -0200 Subject: [PATCH] KVM: use gfn_to_pfn_memslot in kvm_iommu_map_pages So its possible to iommu map a memslot before making it visible to kvm. Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 3 +-- virt/kvm/iommu.c | 13 ++++++------- virt/kvm/kvm_main.c | 2 +- 3 files changed, 8 insertions(+), 10 deletions(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f1f78deece10..9af240387fe6 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -440,8 +440,7 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); #define KVM_IOMMU_CACHE_COHERENCY 0x1 #ifdef CONFIG_IOMMU_API -int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn, - unsigned long npages); +int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); int kvm_iommu_map_guest(struct kvm *kvm); int kvm_iommu_unmap_guest(struct kvm *kvm); int kvm_assign_device(struct kvm *kvm, diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index bc697a66a883..cf567d8033db 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -32,10 +32,10 @@ static int kvm_iommu_unmap_memslots(struct kvm *kvm); static void kvm_iommu_put_pages(struct kvm *kvm, gfn_t base_gfn, unsigned long npages); -int kvm_iommu_map_pages(struct kvm *kvm, - gfn_t base_gfn, unsigned long npages) +int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) { - gfn_t gfn = base_gfn; + gfn_t gfn = slot->base_gfn; + unsigned long npages = slot->npages; pfn_t pfn; int i, r = 0; struct iommu_domain *domain = kvm->arch.iommu_domain; @@ -54,7 +54,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, if (iommu_iova_to_phys(domain, gfn_to_gpa(gfn))) continue; - pfn = gfn_to_pfn(kvm, gfn); + pfn = gfn_to_pfn_memslot(kvm, slot, gfn); r = iommu_map_range(domain, gfn_to_gpa(gfn), pfn_to_hpa(pfn), @@ -69,7 +69,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, return 0; unmap_pages: - kvm_iommu_put_pages(kvm, base_gfn, i); + kvm_iommu_put_pages(kvm, slot->base_gfn, i); return r; } @@ -81,8 +81,7 @@ static int kvm_iommu_map_memslots(struct kvm *kvm) slots = kvm->memslots; for (i = 0; i < slots->nmemslots; i++) { - r = kvm_iommu_map_pages(kvm, slots->memslots[i].base_gfn, - slots->memslots[i].npages); + r = kvm_iommu_map_pages(kvm, &slots->memslots[i]); if (r) break; } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 4e2321c733f7..87d296d8b270 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -684,7 +684,7 @@ skip_lpage: spin_unlock(&kvm->mmu_lock); #ifdef CONFIG_DMAR /* map the pages in iommu page table */ - r = kvm_iommu_map_pages(kvm, base_gfn, npages); + r = kvm_iommu_map_pages(kvm, memslot); if (r) goto out; #endif -- 2.20.1