From: Janosch Frank <frankja@xxxxxxxxxxxxx>
STHYI data has to go through the bounce buffer.
Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
---
arch/s390/kvm/intercept.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 4b1effa44e41..06d1fa83ef4c 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -392,7 +392,7 @@ int handle_sthyi(struct kvm_vcpu *vcpu)
goto out;
}
- if (addr & ~PAGE_MASK)
+ if (!kvm_s390_pv_is_protected(vcpu->kvm) && (addr & ~PAGE_MASK))
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
sctns = (void *)get_zeroed_page(GFP_KERNEL);
@@ -403,10 +403,15 @@ int handle_sthyi(struct kvm_vcpu *vcpu)
out:
if (!cc) {
- r = write_guest(vcpu, addr, reg2, sctns, PAGE_SIZE);
- if (r) {
- free_page((unsigned long)sctns);
- return kvm_s390_inject_prog_cond(vcpu, r);
+ if (kvm_s390_pv_is_protected(vcpu->kvm)) {
+ memcpy((void *)(vcpu->arch.sie_block->sidad & PAGE_MASK), sctns,
+ PAGE_SIZE);
+ } else {
+ r = write_guest(vcpu, addr, reg2, sctns, PAGE_SIZE);
+ if (r) {
+ free_page((unsigned long)sctns);
+ return kvm_s390_inject_prog_cond(vcpu, r);
+ }
}
}
--
2.24.0
