From 268846ba93de2529630d623b6ded72cee1221106 Mon Sep 17 00:00:00 2001 From: "Eugene (jno) Dvurechenski" Date: Wed, 19 Jun 2013 17:27:15 +0200 Subject: s390/kvm: basic implementation of diagnose 308 subcode 6 Linux uses a check for subcode 6 to decide if other subcodes are available. Provide a minimal implementation for subcode 6, as well as for subcode 5. Signed-off-by: Eugene (jno) Dvurechenski Reviewed-by: Cornelia Huck Signed-off-by: Christian Borntraeger [Move code from kvm.c into misc_helper.c] --- target-s390x/kvm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'target-s390x/kvm.c') diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index ed80154e0d..c7fcdfa882 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -72,6 +72,7 @@ #define PRIV_XSCH 0x76 #define PRIV_SQBS 0x8a #define PRIV_EQBS 0x9c +#define DIAG_IPL 0x308 #define DIAG_KVM_HYPERCALL 0x500 #define DIAG_KVM_BREAKPOINT 0x501 @@ -578,11 +579,24 @@ static int handle_hypercall(S390CPU *cpu, struct kvm_run *run) return 0; } +static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run) +{ + uint64_t r1, r3; + + cpu_synchronize_state(CPU(cpu)); + r1 = (run->s390_sieic.ipa & 0x00f0) >> 8; + r3 = run->s390_sieic.ipa & 0x000f; + handle_diag_308(&cpu->env, r1, r3); +} + static int handle_diag(S390CPU *cpu, struct kvm_run *run, int ipb_code) { int r = 0; switch (ipb_code) { + case DIAG_IPL: + kvm_handle_diag_308(cpu, run); + break; case DIAG_KVM_HYPERCALL: r = handle_hypercall(cpu, run); break; -- cgit v1.2.3