Commit 650f3287 authored by David Gibson's avatar David Gibson
Browse files

target/ppc: Implement TIDR 



This adds a trivial implementation of the TIDR register added in
POWER9.  This isn't particularly important to qemu directly - it's
used by accelerator modules that we don't emulate.

However, since qemu isn't aware of it, its state is not synchronized
with KVM and therefore not migrated, which can be a problem.

Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Reviewed-by: default avatarCédric Le Goater <clg@kaod.org>
Reviewed-by: default avatarGreg Kurz <groug@kaod.org>
Reviewed-by: default avatarThomas Huth <thuth@redhat.com>
parent e7bab9a2

target/ppc/cpu.h

+1 −0
Original line number Diff line number Diff line
@@ -1451,6 +1451,7 @@ void ppc_compat_add_property(Object *obj, const char *name, 
#define SPR_TEXASR            (0x082)

#define SPR_TEXASRU           (0x083)

#define SPR_UCTRL             (0x088)

#define SPR_TIDR              (0x090)

#define SPR_MPC_CMPA          (0x090)

#define SPR_MPC_CMPB          (0x091)

#define SPR_MPC_CMPC          (0x092)

target/ppc/translate_init.c

+5 −0
Original line number Diff line number Diff line
@@ -8841,6 +8841,11 @@ static void init_proc_POWER9(CPUPPCState *env) 
    gen_spr_power8_book4(env);

    gen_spr_power8_rpr(env);



    /* POWER9 Specific registers */

    spr_register_kvm(env, SPR_TIDR, "TIDR", NULL, NULL,

                     spr_read_generic, spr_write_generic,

                     KVM_REG_PPC_TIDR, 0);



    /* env variables */

#if !defined(CONFIG_USER_ONLY)

    env->slb_nr = 32;