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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-04-02 14:08:20 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-04-08 10:46:54 +0200 |
| commit | 3180a7fcbc0ec7ed7cc85ed5015bdd7a8c2176e8 (patch) | |
| tree | 8e5b1a5a2920c1c0c2517003626eeee31ea8f077 /virt | |
| parent | 9c8fd1ba2201c072bd3cf6940e2ca4d0a7aed723 (diff) | |
| download | lwn-3180a7fcbc0ec7ed7cc85ed5015bdd7a8c2176e8.tar.gz lwn-3180a7fcbc0ec7ed7cc85ed5015bdd7a8c2176e8.zip | |
KVM: remove kvm_read_hva and kvm_read_hva_atomic
The corresponding write functions just use __copy_to_user. Do the
same on the read side.
This reverts what's left of commit 86ab8cffb498 (KVM: introduce
gfn_to_hva_read/kvm_read_hva/kvm_read_hva_atomic, 2012-08-21)
Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1427976500-28533-1-git-send-email-pbonzini@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 0d06b7b63e95..aadef264bed1 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1187,16 +1187,6 @@ unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable) return gfn_to_hva_memslot_prot(slot, gfn, writable); } -static int kvm_read_hva(void *data, void __user *hva, int len) -{ - return __copy_from_user(data, hva, len); -} - -static int kvm_read_hva_atomic(void *data, void __user *hva, int len) -{ - return __copy_from_user_inatomic(data, hva, len); -} - static int get_user_page_nowait(struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int write, struct page **page) { @@ -1548,7 +1538,7 @@ int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, addr = gfn_to_hva_prot(kvm, gfn, NULL); if (kvm_is_error_hva(addr)) return -EFAULT; - r = kvm_read_hva(data, (void __user *)addr + offset, len); + r = __copy_from_user(data, (void __user *)addr + offset, len); if (r) return -EFAULT; return 0; @@ -1587,7 +1577,7 @@ int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, if (kvm_is_error_hva(addr)) return -EFAULT; pagefault_disable(); - r = kvm_read_hva_atomic(data, (void __user *)addr + offset, len); + r = __copy_from_user_inatomic(data, (void __user *)addr + offset, len); pagefault_enable(); if (r) return -EFAULT; |