[v3,2/2] powerpc/kvm/book3e: Replace current->mm by kvm->mm
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Message ID 20191126223631.389779-3-leonardo@linux.ibm.com
State Awaiting Upstream
Headers show
  • Replace current->mm by kvm->mm on powerpc/kvm
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Commit Message

Leonardo Bras Nov. 26, 2019, 10:36 p.m. UTC
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>
 arch/powerpc/kvm/booke.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index be9a45874194..fd7bdb4f8f87 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -775,7 +775,7 @@  int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 	debug = current->thread.debug;
 	current->thread.debug = vcpu->arch.dbg_reg;
-	vcpu->arch.pgdir = current->mm->pgd;
+	vcpu->arch.pgdir = vcpu->kvm->mm->pgd;
 	ret = __kvmppc_vcpu_run(kvm_run, vcpu);