From 3180a7fcbc0ec7ed7cc85ed5015bdd7a8c2176e8 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 2 Apr 2015 14:08:20 +0200 Subject: [PATCH] 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 Signed-off-by: Paolo Bonzini Message-Id: <1427976500-28533-1-git-send-email-pbonzini@redhat.com> --- virt/kvm/kvm_main.c | 14 ++------------ 1 file 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; -- 2.20.1