exec.c: Don't set cpu->as until cpu_address_space_init

Rather than setting cpu->as unconditionally in cpu_exec_init
(and then having target-i386 override this later), don't set
it until the first call to cpu_address_space_init.

This requires us to initialise the address space for
both TCG and KVM (KVM doesn't need the AS listener but
it does require cpu->as to be set).

For target CPUs which don't set up any address spaces (currently
everything except i386), add the default address_space_memory
in qemu_init_vcpu().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index d900b0d078..eb3890a389 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -84,7 +84,21 @@ void QEMU_NORETURN cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc);
 
 #if !defined(CONFIG_USER_ONLY)
 void cpu_reloading_memory_map(void);
-void tcg_cpu_address_space_init(CPUState *cpu, AddressSpace *as);
+/**
+ * cpu_address_space_init:
+ * @cpu: CPU to add this address space to
+ * @as: address space to add
+ * @asidx: integer index of this address space
+ *
+ * Add the specified address space to the CPU's cpu_ases list.
+ * The address space added with @asidx 0 is the one used for the
+ * convenience pointer cpu->as.
+ * The target-specific code which registers ASes is responsible
+ * for defining what semantics address space 0, 1, 2, etc have.
+ *
+ * Note that with KVM only one address space is supported.
+ */
+void cpu_address_space_init(CPUState *cpu, AddressSpace *as, int asidx);
 /* cputlb.c */
 /**
  * tlb_flush_page: