ppc: externalize ppc_get_vcpu_by_pir()

We will use it to get the CPU interrupt presenter in XIVE when the
TIMA is accessed from the indirect page.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190306085032.15744-3-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 16 insertions, 0 deletions

diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index df23a7000c..49d57469fb 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -1492,3 +1492,19 @@ void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
         break;
     }
 }
+
+PowerPCCPU *ppc_get_vcpu_by_pir(int pir)
+{
+    CPUState *cs;
+
+    CPU_FOREACH(cs) {
+        PowerPCCPU *cpu = POWERPC_CPU(cs);
+        CPUPPCState *env = &cpu->env;
+
+        if (env->spr_cb[SPR_PIR].default_value == pir) {
+            return cpu;
+        }
+    }
+
+    return NULL;
+}