diff options
| author | Niek Linnenbank <nieklinnenbank@gmail.com> | 2019-12-20 14:03:00 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-12-20 14:03:00 +0000 |
| commit | c8fa6079eb35888587f1be27c1590da4edcc5098 (patch) | |
| tree | a9e9b9ba79bdbf077c414b1f59792220d542fad8 /target/arm | |
| parent | 0ee8b24a69e410ce5abdc30b7050dc9e26a647ca (diff) | |
arm/arm-powerctl: rebuild hflags after setting CP15 bits in arm_set_cpu_on()
After setting CP15 bits in arm_set_cpu_on() the cached hflags must
be rebuild to reflect the changed processor state. Without rebuilding,
the cached hflags would be inconsistent until the next call to
arm_rebuild_hflags(). When QEMU is compiled with debugging enabled
(--enable-debug), this problem is captured shortly after the first
call to arm_set_cpu_on() for CPUs running in ARM 32-bit non-secure mode:
qemu-system-arm: target/arm/helper.c:11359: cpu_get_tb_cpu_state:
Assertion `flags == rebuild_hflags_internal(env)' failed.
Aborted (core dumped)
Fixes: 0c7f8c43daf65
Cc: qemu-stable@nongnu.org
Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm')
| -rw-r--r-- | target/arm/arm-powerctl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/target/arm/arm-powerctl.c b/target/arm/arm-powerctl.c index b064513d44..b75f813b40 100644 --- a/target/arm/arm-powerctl.c +++ b/target/arm/arm-powerctl.c @@ -127,6 +127,9 @@ static void arm_set_cpu_on_async_work(CPUState *target_cpu_state, target_cpu->env.regs[0] = info->context_id; } + /* CP15 update requires rebuilding hflags */ + arm_rebuild_hflags(&target_cpu->env); + /* Start the new CPU at the requested address */ cpu_set_pc(target_cpu_state, info->entry); |