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KVM: s390: pv: Allow AP-instructions for pv-guests

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Introduces new feature bits and enablement flags for AP and AP IRQ
support.

Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Michael Mueller <mimu@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20230815151415.379760-5-seiden@linux.ibm.com
Message-Id: <20230815151415.379760-5-seiden@linux.ibm.com>
This commit is contained in:
Steffen Eiden 2023-08-15 17:14:15 +02:00 committed by Janosch Frank
parent 19c654bf05
commit 899e2206f4
2 changed files with 15 additions and 3 deletions
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12
arch/s390/include/asm/uv.h
View File

@ -99,6 +99,8 @@ enum uv_cmds_inst {
enum uv_feat_ind {
BIT_UV_FEAT_MISC = 0,
BIT_UV_FEAT_AIV = 1,
BIT_UV_FEAT_AP = 4,
BIT_UV_FEAT_AP_INTR = 5,
};
struct uv_cb_header {
@ -159,7 +161,15 @@ struct uv_cb_cgc {
u64 guest_handle;
u64 conf_base_stor_origin;
u64 conf_virt_stor_origin;
u64 reserved30;
u8 reserved30[6];
union {
struct {
u16 : 14;
u16 ap_instr_intr : 1;
u16 ap_allow_instr : 1;
};
u16 raw;
} flags;
u64 guest_stor_origin;
u64 guest_stor_len;
u64 guest_sca;

6
arch/s390/kvm/pv.c
View File

@ -572,12 +572,14 @@ int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc)
uvcb.conf_base_stor_origin =
virt_to_phys((void *)kvm->arch.pv.stor_base);
uvcb.conf_virt_stor_origin = (u64)kvm->arch.pv.stor_var;
uvcb.flags.ap_allow_instr = kvm->arch.model.uv_feat_guest.ap;
uvcb.flags.ap_instr_intr = kvm->arch.model.uv_feat_guest.ap_intr;
cc = uv_call_sched(0, (u64)&uvcb);
*rc = uvcb.header.rc;
*rrc = uvcb.header.rrc;
KVM_UV_EVENT(kvm, 3, "PROTVIRT CREATE VM: handle %llx len %llx rc %x rrc %x",
uvcb.guest_handle, uvcb.guest_stor_len, *rc, *rrc);
KVM_UV_EVENT(kvm, 3, "PROTVIRT CREATE VM: handle %llx len %llx rc %x rrc %x flags %04x",
uvcb.guest_handle, uvcb.guest_stor_len, *rc, *rrc, uvcb.flags.raw);
/* Outputs */
kvm->arch.pv.handle = uvcb.guest_handle;