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KVM: set_memory_region: Drop user_alloc from set_memory_region()

Browse source 
Except ia64's stale code, KVM_SET_MEMORY_REGION support, this is only
used for sanity checks in __kvm_set_memory_region() which can easily
be changed to use slot id instead.

Signed-off-by: Takuya Yoshikawa <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]>
This commit is contained in:
Takuya Yoshikawa 2013-02-27 19:43:00 +09:00 • committed by Marcelo Tosatti
commit 47ae31e257
4 changed files with 13 additions and 39 deletions
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18
virt/kvm/kvm_main.c
View file

@ -745,8 +745,7 @@ enum kvm_mr_change {
* Must be called holding mmap_sem for write.
*/
int __kvm_set_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
bool user_alloc)
struct kvm_userspace_memory_region *mem)
{
int r;
gfn_t base_gfn;
@ -767,7 +766,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
if (mem->guest_phys_addr & (PAGE_SIZE - 1))
goto out;
/* We can read the guest memory with __xxx_user() later on. */
if (user_alloc &&
if ((mem->slot < KVM_USER_MEM_SLOTS) &&
((mem->userspace_addr & (PAGE_SIZE - 1)) ||
!access_ok(VERIFY_WRITE,
(void __user *)(unsigned long)mem->userspace_addr,
@ -932,26 +931,23 @@ out:
EXPORT_SYMBOL_GPL(__kvm_set_memory_region);
int kvm_set_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
bool user_alloc)
struct kvm_userspace_memory_region *mem)
{
int r;
mutex_lock(&kvm->slots_lock);
r = __kvm_set_memory_region(kvm, mem, user_alloc);
r = __kvm_set_memory_region(kvm, mem);
mutex_unlock(&kvm->slots_lock);
return r;
}
EXPORT_SYMBOL_GPL(kvm_set_memory_region);
int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
struct
kvm_userspace_memory_region *mem,
bool user_alloc)
struct kvm_userspace_memory_region *mem)
{
if (mem->slot >= KVM_USER_MEM_SLOTS)
return -EINVAL;
return kvm_set_memory_region(kvm, mem, user_alloc);
return kvm_set_memory_region(kvm, mem);
}
int kvm_get_dirty_log(struct kvm *kvm,
@ -2198,7 +2194,7 @@ static long kvm_vm_ioctl(struct file *filp,
sizeof kvm_userspace_mem))
goto out;
r = kvm_vm_ioctl_set_memory_region(kvm, &kvm_userspace_mem, true);
r = kvm_vm_ioctl_set_memory_region(kvm, &kvm_userspace_mem);
break;
}
case KVM_GET_DIRTY_LOG: {