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| author | Andreas Färber <afaerber@suse.de> | 2012-10-31 02:41:11 +0100 |
|---|---|---|
| committer | Andreas Färber <afaerber@suse.de> | 2012-12-19 01:01:36 +0100 |
| commit | c92458538f501eda585b4b774c50644aed391a8a (patch) | |
| tree | f808d560f27889dbb807be4598056f55425ad18d | |
| parent | ad6011775a324d7c3e2a8bd824e03c5e576dda48 (diff) | |
| download | qemu-c92458538f501eda585b4b774c50644aed391a8a.zip qemu-c92458538f501eda585b4b774c50644aed391a8a.tar.gz qemu-c92458538f501eda585b4b774c50644aed391a8a.tar.bz2 | |
target-alpha: Avoid leaking the alarm timer over reset
Move the timer from CPUAlphaState to AlphaCPU to avoid the pointer being
zero'ed once we implement reset. Would cause a segfault in
sys_helper.c:helper_set_alarm().
This also simplifies timer initialization in Typhoon.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Richard Henderson <rth@twiddle.net>
| -rw-r--r-- | hw/alpha_typhoon.c | 3 | ||||
| -rw-r--r-- | target-alpha/cpu-qom.h | 3 | ||||
| -rw-r--r-- | target-alpha/cpu.h | 1 | ||||
| -rw-r--r-- | target-alpha/sys_helper.c | 6 |
4 files changed, 8 insertions, 5 deletions
diff --git a/hw/alpha_typhoon.c b/hw/alpha_typhoon.c index 4cc810f..40b3a47 100644 --- a/hw/alpha_typhoon.c +++ b/hw/alpha_typhoon.c @@ -724,8 +724,7 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus, AlphaCPU *cpu = cpus[i]; s->cchip.cpu[i] = cpu; if (cpu != NULL) { - CPUAlphaState *env = &cpu->env; - env->alarm_timer = qemu_new_timer_ns(rtc_clock, + cpu->alarm_timer = qemu_new_timer_ns(rtc_clock, typhoon_alarm_timer, (void *)((uintptr_t)s + i)); } diff --git a/target-alpha/cpu-qom.h b/target-alpha/cpu-qom.h index 6b4ca6d..98585d5 100644 --- a/target-alpha/cpu-qom.h +++ b/target-alpha/cpu-qom.h @@ -58,6 +58,9 @@ typedef struct AlphaCPU { /*< public >*/ CPUAlphaState env; + + /* This alarm doesn't exist in real hardware; we wish it did. */ + struct QEMUTimer *alarm_timer; } AlphaCPU; static inline AlphaCPU *alpha_env_get_cpu(CPUAlphaState *env) diff --git a/target-alpha/cpu.h b/target-alpha/cpu.h index 32e3777..e1d7715 100644 --- a/target-alpha/cpu.h +++ b/target-alpha/cpu.h @@ -277,7 +277,6 @@ struct CPUAlphaState { #endif /* This alarm doesn't exist in real hardware; we wish it did. */ - struct QEMUTimer *alarm_timer; uint64_t alarm_expire; /* Those resources are used only in QEMU core */ diff --git a/target-alpha/sys_helper.c b/target-alpha/sys_helper.c index 40ca49c..d4f14ef 100644 --- a/target-alpha/sys_helper.c +++ b/target-alpha/sys_helper.c @@ -77,11 +77,13 @@ uint64_t helper_get_time(void) void helper_set_alarm(CPUAlphaState *env, uint64_t expire) { + AlphaCPU *cpu = alpha_env_get_cpu(env); + if (expire) { env->alarm_expire = expire; - qemu_mod_timer(env->alarm_timer, expire); + qemu_mod_timer(cpu->alarm_timer, expire); } else { - qemu_del_timer(env->alarm_timer); + qemu_del_timer(cpu->alarm_timer); } } #endif /* CONFIG_USER_ONLY */ |