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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2018-01-15 09:29:51 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2018-01-15 09:29:51 +1100 |
| commit | 494295ef9936ba8dd9123687f22a723c90442b3b (patch) | |
| tree | 53aa09fe3f0f688ac53f6225be877551ebf4f1e6 /virt | |
| parent | f26ffa26a91d8335e35842f969a9e1e0fe456119 (diff) | |
| parent | 418bb8b3ff50515c6d83fdf6d609331c676de178 (diff) | |
Merge remote-tracking branch 'vfs/for-next'
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/eventfd.c | 4 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 43 |
2 files changed, 14 insertions, 33 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index f2ac53ab8243..a334399fafec 100644 --- a/virt/kvm/eventfd.c +++ b/virt/kvm/eventfd.c @@ -188,7 +188,7 @@ irqfd_wakeup(wait_queue_entry_t *wait, unsigned mode, int sync, void *key) { struct kvm_kernel_irqfd *irqfd = container_of(wait, struct kvm_kernel_irqfd, wait); - unsigned long flags = (unsigned long)key; + __poll_t flags = key_to_poll(key); struct kvm_kernel_irq_routing_entry irq; struct kvm *kvm = irqfd->kvm; unsigned seq; @@ -287,7 +287,7 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args) struct fd f; struct eventfd_ctx *eventfd = NULL, *resamplefd = NULL; int ret; - unsigned int events; + __poll_t events; int idx; if (!kvm_arch_intc_initialized(kvm)) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 210bf820385a..d6b9370806f8 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1322,17 +1322,6 @@ unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *w return gfn_to_hva_memslot_prot(slot, gfn, writable); } -static int get_user_page_nowait(unsigned long start, int write, - struct page **page) -{ - int flags = FOLL_NOWAIT | FOLL_HWPOISON; - - if (write) - flags |= FOLL_WRITE; - - return get_user_pages(start, 1, flags, page, NULL); -} - static inline int check_user_page_hwpoison(unsigned long addr) { int rc, flags = FOLL_HWPOISON | FOLL_WRITE; @@ -1381,7 +1370,8 @@ static bool hva_to_pfn_fast(unsigned long addr, bool atomic, bool *async, static int hva_to_pfn_slow(unsigned long addr, bool *async, bool write_fault, bool *writable, kvm_pfn_t *pfn) { - struct page *page[1]; + unsigned int flags = FOLL_HWPOISON; + struct page *page; int npages = 0; might_sleep(); @@ -1389,35 +1379,26 @@ static int hva_to_pfn_slow(unsigned long addr, bool *async, bool write_fault, if (writable) *writable = write_fault; - if (async) { - down_read(¤t->mm->mmap_sem); - npages = get_user_page_nowait(addr, write_fault, page); - up_read(¤t->mm->mmap_sem); - } else { - unsigned int flags = FOLL_HWPOISON; - - if (write_fault) - flags |= FOLL_WRITE; + if (write_fault) + flags |= FOLL_WRITE; + if (async) + flags |= FOLL_NOWAIT; - npages = get_user_pages_unlocked(addr, 1, page, flags); - } + npages = get_user_pages_unlocked(addr, 1, &page, flags); if (npages != 1) return npages; /* map read fault as writable if possible */ if (unlikely(!write_fault) && writable) { - struct page *wpage[1]; + struct page *wpage; - npages = __get_user_pages_fast(addr, 1, 1, wpage); - if (npages == 1) { + if (__get_user_pages_fast(addr, 1, 1, &wpage) == 1) { *writable = true; - put_page(page[0]); - page[0] = wpage[0]; + put_page(page); + page = wpage; } - - npages = 1; } - *pfn = page_to_pfn(page[0]); + *pfn = page_to_pfn(page); return npages; } |