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KVM: s390: refactor crypto initialization

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This patch refactors the code that initializes and sets up the
crypto configuration for a guest. The following changes are
implemented via this patch:

1. Introduces a flag indicating AP instructions executed on
   the guest shall be interpreted by the firmware. This flag
   is used to set a bit in the guest's state description
   indicating AP instructions are to be interpreted.

2. Replace code implementing AP interfaces with code supplied
   by the AP bus to query the AP configuration.

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Farhan Ali <alifm@linux.ibm.com>
Message-Id: <20180925231641.4954-4-akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Tony Krowiak
2018-09-25 19:16:18 -04:00
committed by Christian Borntraeger
parent 3194cdb711
commit e585b24aeb
2 changed files with 36 additions and 37 deletions
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3
arch/s390/include/asm/kvm_host.h
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@@ -187,6 +187,7 @@ struct kvm_s390_sie_block {
#define ECA_AIV 0x00200000
#define ECA_VX 0x00020000
#define ECA_PROTEXCI 0x00002000
#define ECA_APIE 0x00000008
#define ECA_SII 0x00000001
__u32 eca; /* 0x004c */
#define ICPT_INST 0x04
@@ -256,6 +257,7 @@ struct kvm_s390_sie_block {
__u8 reservede4[4]; /* 0x00e4 */
__u64 tecmc; /* 0x00e8 */
__u8 reservedf0[12]; /* 0x00f0 */
#define CRYCB_FORMAT_MASK 0x00000003
#define CRYCB_FORMAT1 0x00000001
#define CRYCB_FORMAT2 0x00000003
__u32 crycbd; /* 0x00fc */
@@ -716,6 +718,7 @@ struct kvm_s390_crypto {
__u32 crycbd;
__u8 aes_kw;
__u8 dea_kw;
__u8 apie;
};
#define APCB0_MASK_SIZE 1