diff options
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index b10972ed0c9..a55354009cb 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1778,6 +1778,7 @@ static long kvm_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { struct kvm *kvm = filp->private_data; + void __user *argp = (void __user *)arg; int r = -EINVAL; switch (ioctl) { @@ -1794,12 +1795,12 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_run kvm_run; r = -EFAULT; - if (copy_from_user(&kvm_run, (void *)arg, sizeof kvm_run)) + if (copy_from_user(&kvm_run, argp, sizeof kvm_run)) goto out; r = kvm_dev_ioctl_run(kvm, &kvm_run); if (r < 0 && r != -EINTR) goto out; - if (copy_to_user((void *)arg, &kvm_run, sizeof kvm_run)) { + if (copy_to_user(argp, &kvm_run, sizeof kvm_run)) { r = -EFAULT; goto out; } @@ -1809,13 +1810,13 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_regs kvm_regs; r = -EFAULT; - if (copy_from_user(&kvm_regs, (void *)arg, sizeof kvm_regs)) + if (copy_from_user(&kvm_regs, argp, sizeof kvm_regs)) goto out; r = kvm_dev_ioctl_get_regs(kvm, &kvm_regs); if (r) goto out; r = -EFAULT; - if (copy_to_user((void *)arg, &kvm_regs, sizeof kvm_regs)) + if (copy_to_user(argp, &kvm_regs, sizeof kvm_regs)) goto out; r = 0; break; @@ -1824,7 +1825,7 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_regs kvm_regs; r = -EFAULT; - if (copy_from_user(&kvm_regs, (void *)arg, sizeof kvm_regs)) + if (copy_from_user(&kvm_regs, argp, sizeof kvm_regs)) goto out; r = kvm_dev_ioctl_set_regs(kvm, &kvm_regs); if (r) @@ -1836,13 +1837,13 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_sregs kvm_sregs; r = -EFAULT; - if (copy_from_user(&kvm_sregs, (void *)arg, sizeof kvm_sregs)) + if (copy_from_user(&kvm_sregs, argp, sizeof kvm_sregs)) goto out; r = kvm_dev_ioctl_get_sregs(kvm, &kvm_sregs); if (r) goto out; r = -EFAULT; - if (copy_to_user((void *)arg, &kvm_sregs, sizeof kvm_sregs)) + if (copy_to_user(argp, &kvm_sregs, sizeof kvm_sregs)) goto out; r = 0; break; @@ -1851,7 +1852,7 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_sregs kvm_sregs; r = -EFAULT; - if (copy_from_user(&kvm_sregs, (void *)arg, sizeof kvm_sregs)) + if (copy_from_user(&kvm_sregs, argp, sizeof kvm_sregs)) goto out; r = kvm_dev_ioctl_set_sregs(kvm, &kvm_sregs); if (r) @@ -1863,13 +1864,13 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_translation tr; r = -EFAULT; - if (copy_from_user(&tr, (void *)arg, sizeof tr)) + if (copy_from_user(&tr, argp, sizeof tr)) goto out; r = kvm_dev_ioctl_translate(kvm, &tr); if (r) goto out; r = -EFAULT; - if (copy_to_user((void *)arg, &tr, sizeof tr)) + if (copy_to_user(argp, &tr, sizeof tr)) goto out; r = 0; break; @@ -1878,7 +1879,7 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_interrupt irq; r = -EFAULT; - if (copy_from_user(&irq, (void *)arg, sizeof irq)) + if (copy_from_user(&irq, argp, sizeof irq)) goto out; r = kvm_dev_ioctl_interrupt(kvm, &irq); if (r) @@ -1890,7 +1891,7 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_debug_guest dbg; r = -EFAULT; - if (copy_from_user(&dbg, (void *)arg, sizeof dbg)) + if (copy_from_user(&dbg, argp, sizeof dbg)) goto out; r = kvm_dev_ioctl_debug_guest(kvm, &dbg); if (r) @@ -1902,7 +1903,7 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_memory_region kvm_mem; r = -EFAULT; - if (copy_from_user(&kvm_mem, (void *)arg, sizeof kvm_mem)) + if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem)) goto out; r = kvm_dev_ioctl_set_memory_region(kvm, &kvm_mem); if (r) @@ -1913,7 +1914,7 @@ static long kvm_dev_ioctl(struct file *filp, struct kvm_dirty_log log; r = -EFAULT; - if (copy_from_user(&log, (void *)arg, sizeof log)) + if (copy_from_user(&log, argp, sizeof log)) goto out; r = kvm_dev_ioctl_get_dirty_log(kvm, &log); if (r) @@ -1921,13 +1922,13 @@ static long kvm_dev_ioctl(struct file *filp, break; } case KVM_GET_MSRS: - r = msr_io(kvm, (void __user *)arg, get_msr, 1); + r = msr_io(kvm, argp, get_msr, 1); break; case KVM_SET_MSRS: - r = msr_io(kvm, (void __user *)arg, do_set_msr, 0); + r = msr_io(kvm, argp, do_set_msr, 0); break; case KVM_GET_MSR_INDEX_LIST: { - struct kvm_msr_list __user *user_msr_list = (void __user *)arg; + struct kvm_msr_list __user *user_msr_list = argp; struct kvm_msr_list msr_list; unsigned n; |