[PATCH v7 10/15] KVM: s390: add kvm reference to struct sie_page2

Michael Mueller
2019-01-31T08:52:41Z

Adding the kvm reference to struct sie_page2 will allow to
determine the kvm a given gisa belongs to:

container_of(gisa, struct sie_page2, gisa)->kvm

This functionality will be required to process a gisa in
gib alert interruption context.

Signed-off-by: Michael Mueller <mimu@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
---
arch/s390/include/asm/kvm_host.h | 3 ++-
arch/s390/kvm/kvm-s390.c | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 397af0d33539..7077762ab460 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -801,7 +801,8 @@ struct sie_page2 {
__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
struct kvm_s390_crypto_cb crycb; /* 0x0800 */
struct kvm_s390_gisa gisa; /* 0x0900 */
- u8 reserved920[0x1000 - 0x920]; /* 0x0920 */
+ struct kvm *kvm; /* 0x0920 */
+ u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
};

struct kvm_s390_vsie {
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 118d4c0bbb8e..67023d5656fd 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2210,6 +2210,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
if (!kvm->arch.sie_page2)
goto out_err;

+ kvm->arch.sie_page2->kvm = kvm;
kvm->arch.model.fac_list = kvm->arch.sie_page2->fac_list;

for (i = 0; i < kvm_s390_fac_size(); i++) {
--
2.13.4