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>

diff --git a/target-arm/Makefile.objs b/target-arm/Makefile.objs
index f20641163c5e1ad0517413f68b8e464fcdc38041..847fb52ee025b91dc79e580f34616f43b4d20714 100644 (file)
--- a/target-arm/Makefile.objs
+++ b/target-arm/Makefile.objs
@@ -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

diff --git a/target-arm/arm-powerctl.c b/target-arm/arm-powerctl.c
index 6519d52caedc87619a9a26ea3baffca464ecde80..fbb7a15daa0cca72697b13ee50ea52ba4b4e504a 100644 (file)
--- a/target-arm/arm-powerctl.c
+++ b/target-arm/arm-powerctl.c
@@ -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;
 }