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arm: always start from first_cpu when registering loader cpu reset callback

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if arm_load_kernel() were passed non first_cpu, QEMU would end up
with partially set do_cpu_reset() callback leaving some CPUs without it.

Make sure that do_cpu_reset() is registered for all CPUs by enumerating
CPUs from first_cpu.

(In practice every board that we have was passing us the first CPU
as the boot CPU, either directly or indirectly, so this wasn't
causing incorrect behaviour.)

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: added a note that this isn't a behaviour change]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Igor Mammedov 2018-04-26 11:04:38 +01:00 committed by Peter Maydell
parent 14ec3cbd7c
commit 75ed2c0248
1 changed files with 1 additions and 1 deletions
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2
hw/arm/boot.c
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@ -1188,7 +1188,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
* actually loading a kernel, the handler is also responsible for
* arranging that we start it correctly.
*/
for (cs = CPU(cpu); cs; cs = CPU_NEXT(cs)) {
for (cs = first_cpu; cs; cs = CPU_NEXT(cs)) {
qemu_register_reset(do_cpu_reset, ARM_CPU(cs));
}
}