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Diffstat (limited to 'arch/riscv/kvm/mmu.c')
-rw-r--r--arch/riscv/kvm/mmu.c25
1 files changed, 2 insertions, 23 deletions
diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
index 525fb5a330c0..58f5f3536ffd 100644
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
@@ -171,7 +171,6 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
enum kvm_mr_change change)
{
hva_t hva, reg_end, size;
- gpa_t base_gpa;
bool writable;
int ret = 0;
@@ -190,15 +189,13 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
hva = new->userspace_addr;
size = new->npages << PAGE_SHIFT;
reg_end = hva + size;
- base_gpa = new->base_gfn << PAGE_SHIFT;
writable = !(new->flags & KVM_MEM_READONLY);
mmap_read_lock(current->mm);
/*
* A memory region could potentially cover multiple VMAs, and
- * any holes between them, so iterate over all of them to find
- * out if we can map any of them right now.
+ * any holes between them, so iterate over all of them.
*
* +--------------------------------------------+
* +---------------+----------------+ +----------------+
@@ -209,7 +206,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
*/
do {
struct vm_area_struct *vma;
- hva_t vm_start, vm_end;
+ hva_t vm_end;
vma = find_vma_intersection(current->mm, hva, reg_end);
if (!vma)
@@ -225,36 +222,18 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
}
/* Take the intersection of this VMA with the memory region */
- vm_start = max(hva, vma->vm_start);
vm_end = min(reg_end, vma->vm_end);
if (vma->vm_flags & VM_PFNMAP) {
- gpa_t gpa = base_gpa + (vm_start - hva);
- phys_addr_t pa;
-
- pa = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;
- pa += vm_start - vma->vm_start;
-
/* IO region dirty page logging not allowed */
if (new->flags & KVM_MEM_LOG_DIRTY_PAGES) {
ret = -EINVAL;
goto out;
}
-
- ret = kvm_riscv_mmu_ioremap(kvm, gpa, pa, vm_end - vm_start,
- writable, false);
- if (ret)
- break;
}
hva = vm_end;
} while (hva < reg_end);
- if (change == KVM_MR_FLAGS_ONLY)
- goto out;
-
- if (ret)
- kvm_riscv_mmu_iounmap(kvm, base_gpa, size);
-
out:
mmap_read_unlock(current->mm);
return ret;