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authorMichael Mueller <mimu@linux.vnet.ibm.com>2017-06-23 14:51:25 +0300
committerChristian Borntraeger <borntraeger@de.ibm.com>2018-01-26 16:13:58 +0300
commit4b9f952577fb40875a2a163d80515a8daa0d6bef (patch)
treeb8716fde37d1f1bbe2ebe043ea9825bb5e74206d /arch/s390/include
parent9e73ea7056bd5f7e1b6e66e3d503478bb5160f07 (diff)
downloadlinux-4b9f952577fb40875a2a163d80515a8daa0d6bef.tar.xz
KVM: s390: introduce the format-1 GISA
The patch modifies the previously defined GISA data structure to be able to store two GISA formats, format-0 and format-1. Additionally, it verifies the availability of the GISA format facility and enables the use of a format-1 GISA in the SIE control block accordingly. A format-1 can do everything that format-0 can and we will need it for real HW passthrough. As there are systems with only format-0 we keep both variants. Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/kvm_host.h44
1 files changed, 34 insertions, 10 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 76d6f0ef3dbd..59dd46adf0e8 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -228,6 +228,7 @@ struct kvm_s390_sie_block {
__u8 epdx; /* 0x0069 */
__u8 reserved6a[2]; /* 0x006a */
__u32 todpr; /* 0x006c */
+#define GISA_FORMAT1 0x00000001
__u32 gd; /* 0x0070 */
__u8 reserved74[12]; /* 0x0074 */
__u64 mso; /* 0x0080 */
@@ -719,15 +720,38 @@ struct kvm_s390_crypto_cb {
};
struct kvm_s390_gisa {
- u32 next_alert;
- u8 ipm;
- u8 reserved01;
- u8 : 6;
- u8 g : 1;
- u8 c : 1;
- u8 iam;
- u8 reserved02[4];
- u32 airq_count;
+ union {
+ struct { /* common to all formats */
+ u32 next_alert;
+ u8 ipm;
+ u8 reserved01[2];
+ u8 iam;
+ };
+ struct { /* format 0 */
+ u32 next_alert;
+ u8 ipm;
+ u8 reserved01;
+ u8 : 6;
+ u8 g : 1;
+ u8 c : 1;
+ u8 iam;
+ u8 reserved02[4];
+ u32 airq_count;
+ } g0;
+ struct { /* format 1 */
+ u32 next_alert;
+ u8 ipm;
+ u8 simm;
+ u8 nimm;
+ u8 iam;
+ u8 aism[8];
+ u8 : 6;
+ u8 g : 1;
+ u8 c : 1;
+ u8 reserved03[11];
+ u32 airq_count;
+ } g1;
+ };
};
/*
@@ -738,7 +762,7 @@ 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 reserved910[0x1000 - 0x910]; /* 0x0910 */
+ u8 reserved920[0x1000 - 0x920]; /* 0x0920 */
};
struct kvm_s390_vsie {