diff options
| author |   Janosch Frank <frankja@linux.ibm.com> | 2019-05-08 15:52:00 +0200 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2020-02-27 19:47:11 +0100 |
| commit | c8aac2344d663ec9c635ccec368341602f255f4c (patch) | |
| tree | 8b504f789c3e601b86a36f1bd98796506cfc8a6d /arch/s390/kvm | |
| parent | KVM: s390: protvirt: Handle spec exception loops (diff) | |
| download | linux-dev-c8aac2344d663ec9c635ccec368341602f255f4c.tar.xz linux-dev-c8aac2344d663ec9c635ccec368341602f255f4c.zip | |
KVM: s390: protvirt: Add new gprs location handling
Guest registers for protected guests are stored at offset 0x380. We
will copy those to the usual places. Long term we could refactor this
or use register access functions.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 2881151fd773..bd62312fdc0e 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -4059,6 +4059,7 @@ static int vcpu_post_run(struct kvm_vcpu *vcpu, int exit_reason) static int __vcpu_run(struct kvm_vcpu *vcpu) { int rc, exit_reason; + struct sie_page *sie_page = (struct sie_page *)vcpu->arch.sie_block; /* * We try to hold kvm->srcu during most of vcpu_run (except when run- @@ -4080,8 +4081,18 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) guest_enter_irqoff(); __disable_cpu_timer_accounting(vcpu); local_irq_enable(); + if (kvm_s390_pv_cpu_is_protected(vcpu)) { + memcpy(sie_page->pv_grregs, + vcpu->run->s.regs.gprs, + sizeof(sie_page->pv_grregs)); + } exit_reason = sie64a(vcpu->arch.sie_block, vcpu->run->s.regs.gprs); + if (kvm_s390_pv_cpu_is_protected(vcpu)) { + memcpy(vcpu->run->s.regs.gprs, + sie_page->pv_grregs, + sizeof(sie_page->pv_grregs)); + } local_irq_disable(); __enable_cpu_timer_accounting(vcpu); guest_exit_irqoff(); |