KVM: PPC: E500: Replace current->mm by kvm->mm

Given that in kvm_create_vm() there is:
kvm->mm = current->mm;

And that on every kvm_*_ioctl we have:
if (kvm->mm != current->mm)
	return -EIO;

I see no reason to keep using current->mm instead of kvm->mm.

By doing so, we would reduce the use of 'global' variables on code, relying
more in the contents of kvm struct.

Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index 321db0fdb9db86274d6129a4e4dd23a9f29a39c0..425d1380664573db18f35c8d66289cb848025716 100644 (file)
--- a/arch/powerpc/kvm/e500_mmu_host.c
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -355,9 +355,9 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
 
        if (tlbsel == 1) {
                struct vm_area_struct *vma;
-               down_read(&current->mm->mmap_sem);
+               down_read(&kvm->mm->mmap_sem);
 
-               vma = find_vma(current->mm, hva);
+               vma = find_vma(kvm->mm, hva);
                if (vma && hva >= vma->vm_start &&
                    (vma->vm_flags & VM_PFNMAP)) {
                        /*
@@ -441,7 +441,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
                        tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1);
                }
 
-               up_read(&current->mm->mmap_sem);
+               up_read(&kvm->mm->mmap_sem);
        }
 
        if (likely(!pfnmap)) {