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| author | Michael Mueller <mimu@linux.vnet.ibm.com> | 2014-05-13 16:58:30 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-05-16 14:57:31 +0200 |
| commit | fda902cb8347da121025c4079b9e87748228a27e (patch) | |
| tree | b5cbcce14afbe2da194e4b3cb8f1594cea800fb5 /arch/s390/kvm/kvm-s390.c | |
| parent | 570126d370e9c018e603d63272ebcf7340efc05b (diff) | |
| download | lwn-fda902cb8347da121025c4079b9e87748228a27e.tar.gz lwn-fda902cb8347da121025c4079b9e87748228a27e.zip | |
KVM: s390: split SIE state guest prefix field
This patch splits the SIE state guest prefix at offset 4
into a prefix bit field. Additionally it provides the
access functions:
- kvm_s390_get_prefix()
- kvm_s390_set_prefix()
to access the prefix per vcpu.
Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 2c243124a4e2..e519860c6031 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -753,7 +753,7 @@ static void kvm_gmap_notifier(struct gmap *gmap, unsigned long address) kvm_for_each_vcpu(i, vcpu, kvm) { /* match against both prefix pages */ - if (vcpu->arch.sie_block->prefix == (address & ~0x1000UL)) { + if (kvm_s390_get_prefix(vcpu) == (address & ~0x1000UL)) { VCPU_EVENT(vcpu, 2, "gmap notifier for %lx", address); kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); exit_sie_sync(vcpu); @@ -1017,7 +1017,7 @@ retry: if (kvm_check_request(KVM_REQ_MMU_RELOAD, vcpu)) { int rc; rc = gmap_ipte_notify(vcpu->arch.gmap, - vcpu->arch.sie_block->prefix, + kvm_s390_get_prefix(vcpu), PAGE_SIZE * 2); if (rc) return rc; @@ -1338,7 +1338,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) 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; + kvm_run->s.regs.prefix = kvm_s390_get_prefix(vcpu); memcpy(&kvm_run->s.regs.crs, &vcpu->arch.sie_block->gcr, 128); if (vcpu->sigset_active) @@ -1357,6 +1357,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) { unsigned char archmode = 1; + unsigned int px; u64 clkcomp; int rc; @@ -1375,8 +1376,9 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) vcpu->run->s.regs.gprs, 128); rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, psw), &vcpu->arch.sie_block->gpsw, 16); + px = kvm_s390_get_prefix(vcpu); rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, pref_reg), - &vcpu->arch.sie_block->prefix, 4); + &px, 4); rc |= write_guest_abs(vcpu, gpa + offsetof(struct save_area, fp_ctrl_reg), &vcpu->arch.guest_fpregs.fpc, 4); |