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authorSuresh Warrier <warrier@linux.vnet.ibm.com>2016-08-19 08:35:53 +0300
committerPaul Mackerras <paulus@ozlabs.org>2016-09-12 03:12:13 +0300
commitaf893c7dc941f2510d4f23e76e312c77c434b2f0 (patch)
tree0c8873e35647c2606f7fb2d065175dcf023dc131 /arch/powerpc/kvm/book3s_xics.c
parentf7af5209b87c592aad81da65bd104241aa43d36a (diff)
downloadlinux-af893c7dc941f2510d4f23e76e312c77c434b2f0.tar.xz
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>
Diffstat (limited to 'arch/powerpc/kvm/book3s_xics.c')
-rw-r--r--arch/powerpc/kvm/book3s_xics.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c
index 4edbe7b93eb5..be5179c97a8f 100644
--- 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) {