diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 7 | ||||
| -rw-r--r-- | arch/s390/kvm/priv.c | 4 |
2 files changed, 7 insertions, 4 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 4c03049e7db..bc581d8a7cd 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -565,13 +565,16 @@ config ZFCPDUMP Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this. config S390_GUEST -bool "s390 guest support (EXPERIMENTAL)" +bool "s390 guest support for KVM (EXPERIMENTAL)" depends on 64BIT && EXPERIMENTAL select VIRTIO select VIRTIO_RING select VIRTIO_CONSOLE help - Select this option if you want to run the kernel under s390 linux + Select this option if you want to run the kernel as a guest under + the KVM hypervisor. This will add detection for KVM as well as a + virtio transport. If KVM is detected, the virtio console will be + the default console. endmenu source "net/Kconfig" diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index d1faf5c5440..cce40ff2913 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -157,8 +157,8 @@ static int handle_stfl(struct kvm_vcpu *vcpu) int rc; vcpu->stat.instruction_stfl++; - facility_list &= ~(1UL<<24); /* no stfle */ - facility_list &= ~(1UL<<23); /* no large pages */ + /* only pass the facility bits, which we can handle */ + facility_list &= 0xfe00fff3; rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list), &facility_list, sizeof(facility_list)); |