KVM: PPC: Book3S HV: Dump irqmap in debugfs

Dump the passthrough irqmap structure associated with a
guest as part of /sys/kernel/debug/powerpc/kvm-xics-*.

Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c
index 4edbe7b..be5179c 100644 (file)
--- a/arch/powerpc/kvm/book3s_xics.c
+++ b/arch/powerpc/kvm/book3s_xics.c
@@ -893,6 +893,21 @@ EXPORT_SYMBOL_GPL(kvmppc_xics_hcall);
 
 /* -- Initialisation code etc. -- */
 
+static void xics_debugfs_irqmap(struct seq_file *m,
+                               struct kvmppc_passthru_irqmap *pimap)
+{
+       int i;
+
+       if (!pimap)
+               return;
+       seq_printf(m, "========\nPIRQ mappings: %d maps\n===========\n",
+                               pimap->n_mapped);
+       for (i = 0; i < pimap->n_mapped; i++)  {
+               seq_printf(m, "r_hwirq=%x, v_hwirq=%x\n",
+                       pimap->mapped[i].r_hwirq, pimap->mapped[i].v_hwirq);
+       }
+}
+
 static int xics_debug_show(struct seq_file *m, void *private)
 {
        struct kvmppc_xics *xics = m->private;
@@ -914,6 +929,8 @@ static int xics_debug_show(struct seq_file *m, void *private)
        t_check_resend = 0;
        t_reject = 0;
 
+       xics_debugfs_irqmap(m, kvm->arch.pimap);
+
        seq_printf(m, "=========\nICP state\n=========\n");
 
        kvm_for_each_vcpu(i, vcpu, kvm) {