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[2/5,v3,RESEND] ppc: Add interface to inject interrupt to guest

Message ID 1403611807-7082-3-git-send-email-Bharat.Bhushan@freescale.com
State New
Headers show

Commit Message

Bharat Bhushan June 24, 2014, 12:10 p.m. UTC 
This patch adds interface to inject interrupt to guest.
Currently a void debug exception function added.
Follow up patch will use this interface to inject debug
interrupt to guest

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
---
 target-ppc/kvm.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
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Patch

diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 1f78cd1..70f77d1 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -759,6 +759,24 @@  static int kvm_put_vpa(CPUState *cs)
 }
 #endif /* TARGET_PPC64 */
 
+static int kvmppc_inject_debug_exception(CPUState *cs)
+{
+    return 0;
+}
+
+static void kvmppc_inject_exception(CPUState *cs)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
+
+    if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
+        if (kvmppc_inject_debug_exception(cs)) {
+            fprintf(stderr, "%s: Debug exception injection failed\n", __func__);
+        }
+        return;
+    }
+}
+
 int kvm_arch_put_registers(CPUState *cs, int level)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -772,6 +790,10 @@  int kvm_arch_put_registers(CPUState *cs, int level)
         return ret;
     }
 
+    if (env->pending_interrupts) {
+        kvmppc_inject_exception(cs);
+    }
+
     regs.ctr = env->ctr;
     regs.lr  = env->lr;
     regs.xer = cpu_read_xer(env);