6.12-stable review patch. If anyone has any objections, please let me know.
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From: Paolo Bonzini pbonzini@redhat.com
commit 87ecfdbc699cc95fac73291b52650283ddcf929d upstream.
If find_linux_pte fails, IRQs will not be restored. This is unlikely to happen in practice since it would have been reported as hanging hosts, but it should of course be fixed anyway.
Cc: stable@vger.kernel.org Reported-by: Sean Christopherson seanjc@google.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/powerpc/kvm/e500_mmu_host.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -481,7 +481,6 @@ static inline int kvmppc_e500_shadow_map if (pte_present(pte)) { wimg = (pte_val(pte) >> PTE_WIMGE_SHIFT) & MAS2_WIMGE_MASK; - local_irq_restore(flags); } else { local_irq_restore(flags); pr_err_ratelimited("%s: pte not present: gfn %lx,pfn %lx\n", @@ -490,8 +489,9 @@ static inline int kvmppc_e500_shadow_map goto out; } } - kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg); + local_irq_restore(flags);
+ kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg); kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize, ref, gvaddr, stlbe);