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target-arm/arm-powerctl: wake up sleeping CPUs 

Testing with Alexander's bare metal syncronisation tests fails in MTTCG
leaving one CPU spinning forever waiting for the second CPU to wake up.
We simply need to kick the vCPU once we have processed the PSCI power on
call.

As the power control API is for system emulation only as is the
qemu_kick_cpu function we also ensure we only build arm-powerctl for
SoftMMU builds.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
CC: Alexander Spyridakis <a.spyridakis@virtualopensystems.com>
Message-Id: <1439220437-23957-20-git-send-email-fred.konrad@greensocs.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Message-Id: <20161027151030.20863-11-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alex Bennée 2016-10-27 16:10:07 +01:00 committed by Paolo Bonzini
parent a5e998262f
commit 548ebcaf36
2 changed files with 3 additions and 1 deletions
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2
target-arm/Makefile.objs
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@ -9,4 +9,4 @@ obj-y += neon_helper.o iwmmxt_helper.o
obj-y += gdbstub.o
obj-$(TARGET_AARCH64) += cpu64.o translate-a64.o helper-a64.o gdbstub64.o
obj-y += crypto_helper.o
obj-y += arm-powerctl.o
obj-$(CONFIG_SOFTMMU) += arm-powerctl.o

2
target-arm/arm-powerctl.c
View File

@ -166,6 +166,8 @@ int arm_set_cpu_on(uint64_t cpuid, uint64_t entry, uint64_t context_id,
/* Start the new CPU at the requested address */
cpu_set_pc(target_cpu_state, entry);
qemu_cpu_kick(target_cpu_state);
/* We are good to go */
return QEMU_ARM_POWERCTL_RET_SUCCESS;
}