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s390x/cpu: Use ioctl to reset state in the kernel 

Some of the state in the kernel can not be reset from QEMU yet.
For this we've got to use the KVM_S390_INITIAL_RESET ioctl to make
sure that the state in the kernel is set to the right values during
initial CPU reset, too.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Thomas Huth 2014-02-12 09:56:35 +01:00 committed by Christian Borntraeger
parent 0ca3611221
commit 49f5c9e98a
1 changed files with 9 additions and 0 deletions
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target-s390x/cpu.c
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@ -108,6 +108,15 @@ static void s390_cpu_initial_reset(CPUState *s)
env->cregs[14] = CR14_RESET;
env->pfault_token = -1UL;
#if defined(CONFIG_KVM)
/* Reset state inside the kernel that we cannot access yet from QEMU. */
if (kvm_enabled()) {
if (kvm_vcpu_ioctl(s, KVM_S390_INITIAL_RESET, NULL)) {
perror("Initial CPU reset failed");
}
}
#endif
}
/* CPUClass:reset() */