From 4336073b9b13943e050edfe9aebb99974c3b6ee1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Mon, 17 May 2021 12:51:28 +0200 Subject: [PATCH] cpu: Assert DeviceClass::vmsd is NULL on user emulation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Migration is specific to system emulation. Restrict current DeviceClass::vmsd to sysemu using #ifdef'ry, and assert in cpu_exec_realizefn() that dc->vmsd not set under user emulation. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-Id: <20210517105140.1062037-12-f4bug@amsat.org> Signed-off-by: Richard Henderson --- cpu.c | 2 ++ target/sh4/cpu.c | 5 +++-- target/xtensa/cpu.c | 4 +++- 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/cpu.c b/cpu.c index 34a0484bf4..6fe4af2797 100644 --- a/cpu.c +++ b/cpu.c @@ -141,6 +141,8 @@ void cpu_exec_realizefn(CPUState *cpu, Error **errp) #endif /* CONFIG_TCG */ #ifdef CONFIG_USER_ONLY + assert(qdev_get_vmsd(DEVICE(cpu)) == NULL || + qdev_get_vmsd(DEVICE(cpu))->unmigratable); assert(cc->vmsd == NULL); #else if (qdev_get_vmsd(DEVICE(cpu)) == NULL) { diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c index ac65c88f1f..35d4251aaf 100644 --- a/target/sh4/cpu.c +++ b/target/sh4/cpu.c @@ -218,10 +218,12 @@ static void superh_cpu_initfn(Object *obj) env->movcal_backup_tail = &(env->movcal_backup); } +#ifndef CONFIG_USER_ONLY static const VMStateDescription vmstate_sh_cpu = { .name = "cpu", .unmigratable = 1, }; +#endif #include "hw/core/tcg-cpu-ops.h" @@ -257,12 +259,11 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data) cc->gdb_write_register = superh_cpu_gdb_write_register; #ifndef CONFIG_USER_ONLY cc->get_phys_page_debug = superh_cpu_get_phys_page_debug; + dc->vmsd = &vmstate_sh_cpu; #endif cc->disas_set_info = superh_cpu_disas_set_info; cc->gdb_num_core_regs = 59; - - dc->vmsd = &vmstate_sh_cpu; cc->tcg_ops = &superh_tcg_ops; } diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c index 210ef80092..0267571fbd 100644 --- a/target/xtensa/cpu.c +++ b/target/xtensa/cpu.c @@ -175,10 +175,12 @@ static void xtensa_cpu_initfn(Object *obj) #endif } +#ifndef CONFIG_USER_ONLY static const VMStateDescription vmstate_xtensa_cpu = { .name = "cpu", .unmigratable = 1, }; +#endif #include "hw/core/tcg-cpu-ops.h" @@ -215,9 +217,9 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data) cc->gdb_stop_before_watchpoint = true; #ifndef CONFIG_USER_ONLY cc->get_phys_page_debug = xtensa_cpu_get_phys_page_debug; + dc->vmsd = &vmstate_xtensa_cpu; #endif cc->disas_set_info = xtensa_cpu_disas_set_info; - dc->vmsd = &vmstate_xtensa_cpu; cc->tcg_ops = &xtensa_tcg_ops; }