diff options
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index f5b7fd653341..d7a72278c033 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2778,7 +2778,7 @@ static bool hva_to_pfn_fast(unsigned long addr, bool write_fault, * The slow path to get the pfn of the specified host virtual address, * 1 indicates success, -errno is returned if error is detected. */ -static int hva_to_pfn_slow(unsigned long addr, bool *async, bool write_fault, +static int hva_to_pfn_slow(unsigned long addr, bool no_wait, bool write_fault, bool interruptible, bool *writable, kvm_pfn_t *pfn) { /* @@ -2801,7 +2801,7 @@ static int hva_to_pfn_slow(unsigned long addr, bool *async, bool write_fault, if (write_fault) flags |= FOLL_WRITE; - if (async) + if (no_wait) flags |= FOLL_NOWAIT; if (interruptible) flags |= FOLL_INTERRUPTIBLE; @@ -2912,8 +2912,8 @@ out: * Pin guest page in memory and return its pfn. * @addr: host virtual address which maps memory to the guest * @interruptible: whether the process can be interrupted by non-fatal signals - * @async: whether this function need to wait IO complete if the - * host page is not in the memory + * @no_wait: whether or not this function need to wait IO complete if the + * host page is not in the memory * @write_fault: whether we should get a writable host page * @writable: whether it allows to map a writable host page for !@write_fault * @@ -2922,7 +2922,7 @@ out: * 2): @write_fault = false && @writable, @writable will tell the caller * whether the mapping is writable. */ -kvm_pfn_t hva_to_pfn(unsigned long addr, bool interruptible, bool *async, +kvm_pfn_t hva_to_pfn(unsigned long addr, bool interruptible, bool no_wait, bool write_fault, bool *writable) { struct vm_area_struct *vma; @@ -2934,7 +2934,7 @@ kvm_pfn_t hva_to_pfn(unsigned long addr, bool interruptible, bool *async, if (hva_to_pfn_fast(addr, write_fault, writable, &pfn)) return pfn; - npages = hva_to_pfn_slow(addr, async, write_fault, interruptible, + npages = hva_to_pfn_slow(addr, no_wait, write_fault, interruptible, writable, &pfn); if (npages == 1) return pfn; @@ -2956,16 +2956,17 @@ retry: if (r < 0) pfn = KVM_PFN_ERR_FAULT; } else { - if (async && vma_is_valid(vma, write_fault)) - *async = true; - pfn = KVM_PFN_ERR_FAULT; + if (no_wait && vma_is_valid(vma, write_fault)) + pfn = KVM_PFN_ERR_NEEDS_IO; + else + pfn = KVM_PFN_ERR_FAULT; } mmap_read_unlock(current->mm); return pfn; } kvm_pfn_t __gfn_to_pfn_memslot(const struct kvm_memory_slot *slot, gfn_t gfn, - bool interruptible, bool *async, + bool interruptible, bool no_wait, bool write_fault, bool *writable, hva_t *hva) { unsigned long addr = __gfn_to_hva_many(slot, gfn, NULL, write_fault); @@ -2987,21 +2988,21 @@ kvm_pfn_t __gfn_to_pfn_memslot(const struct kvm_memory_slot *slot, gfn_t gfn, writable = NULL; } - return hva_to_pfn(addr, interruptible, async, write_fault, writable); + return hva_to_pfn(addr, interruptible, no_wait, write_fault, writable); } EXPORT_SYMBOL_GPL(__gfn_to_pfn_memslot); kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, bool *writable) { - return __gfn_to_pfn_memslot(gfn_to_memslot(kvm, gfn), gfn, false, NULL, + return __gfn_to_pfn_memslot(gfn_to_memslot(kvm, gfn), gfn, false, false, write_fault, writable, NULL); } EXPORT_SYMBOL_GPL(gfn_to_pfn_prot); kvm_pfn_t gfn_to_pfn_memslot(const struct kvm_memory_slot *slot, gfn_t gfn) { - return __gfn_to_pfn_memslot(slot, gfn, false, NULL, true, NULL, NULL); + return __gfn_to_pfn_memslot(slot, gfn, false, false, true, NULL, NULL); } EXPORT_SYMBOL_GPL(gfn_to_pfn_memslot); |