diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2012-02-06 13:59:07 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-08 16:10:18 +0400 |
| commit | 9eed0735ca6a5cf386a4998ad4b6d52d1e29353f (patch) | |
| tree | 447a860fca701a519aa97c41e4413801946079bc | |
| parent | 9ec2d6dc6c4d4792b85dec2f09d39387fb7157d1 (diff) | |
| download | linux-9eed0735ca6a5cf386a4998ad4b6d52d1e29353f.tar.xz | |
KVM: s390: provide control registers via kvm_run
There are several cases were we need the control registers for
userspace. Lets also provide those in kvm_run.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/s390/include/asm/kvm.h | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h index 9acbde4af297..96076676e224 100644 --- a/arch/s390/include/asm/kvm.h +++ b/arch/s390/include/asm/kvm.h @@ -44,10 +44,12 @@ struct kvm_guest_debug_arch { #define KVM_SYNC_PREFIX (1UL << 0) #define KVM_SYNC_GPRS (1UL << 1) #define KVM_SYNC_ACRS (1UL << 2) +#define KVM_SYNC_CRS (1UL << 3) /* definition of registers in kvm_run */ struct kvm_sync_regs { __u64 prefix; /* prefix register */ __u64 gprs[16]; /* general purpose registers */ __u32 acrs[16]; /* access registers */ + __u64 crs[16]; /* control registers */ }; #endif diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 121316ef2e15..cf3c0a91d046 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -291,7 +291,8 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) vcpu->arch.gmap = vcpu->kvm->arch.gmap; vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX | KVM_SYNC_GPRS | - KVM_SYNC_ACRS; + KVM_SYNC_ACRS | + KVM_SYNC_CRS; return 0; } @@ -580,6 +581,11 @@ rerun_vcpu: kvm_run->kvm_dirty_regs &= ~KVM_SYNC_PREFIX; kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix); } + if (kvm_run->kvm_dirty_regs & KVM_SYNC_CRS) { + kvm_run->kvm_dirty_regs &= ~KVM_SYNC_CRS; + memcpy(&vcpu->arch.sie_block->gcr, &kvm_run->s.regs.crs, 128); + kvm_s390_set_prefix(vcpu, kvm_run->s.regs.prefix); + } might_fault(); @@ -629,6 +635,7 @@ rerun_vcpu: kvm_run->psw_mask = vcpu->arch.sie_block->gpsw.mask; kvm_run->psw_addr = vcpu->arch.sie_block->gpsw.addr; kvm_run->s.regs.prefix = vcpu->arch.sie_block->prefix; + memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); if (vcpu->sigset_active) sigprocmask(SIG_SETMASK, &sigsaved, NULL); |