[PATCH 1/5] ppc/spapr: tweak change system reset helper

[Nicholas Piggin <npiggin@gmail.com>]

Rather than have the helper take an optional vector address
override, instead have its caller modify env->nip itself.
This is more consistent when adding pnv nmi support, and also
with mce injection added later.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 hw/ppc/spapr.c           | 9 ++++++---
 target/ppc/cpu.h         | 2 +-
 target/ppc/excp_helper.c | 5 +----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 9a2bd501aa..785c41d205 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3385,13 +3385,13 @@ static void spapr_machine_finalizefn(Object *obj)
 void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg)
 {
     SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
 
     cpu_synchronize_state(cs);
     /* If FWNMI is inactive, addr will be -1, which will deliver to 0x100 */
     if (spapr->fwnmi_system_reset_addr != -1) {
         uint64_t rtas_addr, addr;
-        PowerPCCPU *cpu = POWERPC_CPU(cs);
-        CPUPPCState *env = &cpu->env;
 
         /* get rtas addr from fdt */
         rtas_addr = spapr_get_rtas_addr();
@@ -3405,7 +3405,10 @@ void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg)
         stq_be_phys(&address_space_memory, addr + sizeof(uint64_t), 0);
         env->gpr[3] = addr;
     }
-    ppc_cpu_do_system_reset(cs, spapr->fwnmi_system_reset_addr);
+    ppc_cpu_do_system_reset(cs);
+    if (spapr->fwnmi_system_reset_addr != -1) {
+        env->nip = spapr->fwnmi_system_reset_addr;
+    }
 }
 
 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp)
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index 88d9449555..f4a5304d43 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -1220,7 +1220,7 @@ int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
 int ppc32_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
                                int cpuid, void *opaque);
 #ifndef CONFIG_USER_ONLY
-void ppc_cpu_do_system_reset(CPUState *cs, target_ulong vector);
+void ppc_cpu_do_system_reset(CPUState *cs);
 void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector);
 extern const VMStateDescription vmstate_ppc_cpu;
 #endif
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 08bc885ca6..7f2b5899d3 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -961,15 +961,12 @@ static void ppc_hw_interrupt(CPUPPCState *env)
     }
 }
 
-void ppc_cpu_do_system_reset(CPUState *cs, target_ulong vector)
+void ppc_cpu_do_system_reset(CPUState *cs)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
     CPUPPCState *env = &cpu->env;
 
     powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
-    if (vector != -1) {
-        env->nip = vector;
-    }
 }
 
 void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)
-- 
2.23.0