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KVM: PPC: Book3E: Unlock mmu_lock when setting caching atttribute 

The patch 08c9a188d0
  	kvm: powerpc: use caching attributes as per linux pte
do not handle properly the error case, letting mmu_lock locked. The lock
will further generate a RCU stall from kvmppc_e500_emul_tlbwe() caller.

In case of an error go to out label.

Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Mihai Caraman 2014-06-18 18:45:05 +03:00 committed by Alexander Graf
parent 5c02c392cd
commit 511c66818d
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/kvm/e500_mmu_host.c
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@ -473,7 +473,8 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
if (printk_ratelimit()) if (printk_ratelimit())
pr_err("%s: pte not present: gfn %lx, pfn %lx\n", pr_err("%s: pte not present: gfn %lx, pfn %lx\n",
__func__, (long)gfn, pfn); __func__, (long)gfn, pfn);
return -EINVAL; ret = -EINVAL;
goto out;
} }
kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg); kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg);