KVM: s390: use defines for execution controls

Let's replace the bitmasks by defines. Reconstructed from code, comments
and commit messages.

Tried to keep the defines short and map them to feature names. In case
they don't completely map to features, keep them in the stye of ICTL
defines.

This effectively drops all "U" from the existing numbers. I think this
should be fine (as similarly done for e.g. ICTL defines).

I am not 100% sure about the ECA_MVPGI and ECA_PROTEXCI bits as they are
always used in pairs.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170313104828.13362-1-david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[some renames, add one missing place]

1 files changed, 16 insertions, 17 deletions

diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index 5491be39776b..d91f1df5a854 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -249,7 +249,7 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 {
 	struct kvm_s390_sie_block *scb_o = vsie_page->scb_o;
 	struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s;
-	bool had_tx = scb_s->ecb & 0x10U;
+	bool had_tx = scb_s->ecb & ECB_TE;
 	unsigned long new_mso = 0;
 	int rc;
 
@@ -307,34 +307,34 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 		scb_s->ihcpu = scb_o->ihcpu;
 
 	/* MVPG and Protection Exception Interpretation are always available */
-	scb_s->eca |= scb_o->eca & 0x01002000U;
+	scb_s->eca |= scb_o->eca & (ECA_MVPGI | ECA_PROTEXCI);
 	/* Host-protection-interruption introduced with ESOP */
 	if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_ESOP))
-		scb_s->ecb |= scb_o->ecb & 0x02U;
+		scb_s->ecb |= scb_o->ecb & ECB_HOSTPROTINT;
 	/* transactional execution */
 	if (test_kvm_facility(vcpu->kvm, 73)) {
 		/* remap the prefix is tx is toggled on */
-		if ((scb_o->ecb & 0x10U) && !had_tx)
+		if ((scb_o->ecb & ECB_TE) && !had_tx)
 			prefix_unmapped(vsie_page);
-		scb_s->ecb |= scb_o->ecb & 0x10U;
+		scb_s->ecb |= scb_o->ecb & ECB_TE;
 	}
 	/* SIMD */
 	if (test_kvm_facility(vcpu->kvm, 129)) {
-		scb_s->eca |= scb_o->eca & 0x00020000U;
-		scb_s->ecd |= scb_o->ecd & 0x20000000U;
+		scb_s->eca |= scb_o->eca & ECA_VX;
+		scb_s->ecd |= scb_o->ecd & ECD_HOSTREGMGMT;
 	}
 	/* Run-time-Instrumentation */
 	if (test_kvm_facility(vcpu->kvm, 64))
-		scb_s->ecb3 |= scb_o->ecb3 & 0x01U;
+		scb_s->ecb3 |= scb_o->ecb3 & ECB3_RI;
 	/* Instruction Execution Prevention */
 	if (test_kvm_facility(vcpu->kvm, 130))
-		scb_s->ecb2 |= scb_o->ecb2 & 0x20U;
+		scb_s->ecb2 |= scb_o->ecb2 & ECB2_IEP;
 	if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_SIIF))
-		scb_s->eca |= scb_o->eca & 0x00000001U;
+		scb_s->eca |= scb_o->eca & ECA_SII;
 	if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_IB))
-		scb_s->eca |= scb_o->eca & 0x40000000U;
+		scb_s->eca |= scb_o->eca & ECA_IB;
 	if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_CEI))
-		scb_s->eca |= scb_o->eca & 0x80000000U;
+		scb_s->eca |= scb_o->eca & ECA_CEI;
 
 	prepare_ibc(vcpu, vsie_page);
 	rc = shadow_crycb(vcpu, vsie_page);
@@ -406,7 +406,7 @@ static int map_prefix(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 	prefix += scb_s->mso;
 
 	rc = kvm_s390_shadow_fault(vcpu, vsie_page->gmap, prefix);
-	if (!rc && (scb_s->ecb & 0x10U))
+	if (!rc && (scb_s->ecb & ECB_TE))
 		rc = kvm_s390_shadow_fault(vcpu, vsie_page->gmap,
 					   prefix + PAGE_SIZE);
 	/*
@@ -543,7 +543,7 @@ static int pin_blocks(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 	}
 
 	gpa = scb_o->itdba & ~0xffUL;
-	if (gpa && (scb_s->ecb & 0x10U)) {
+	if (gpa && (scb_s->ecb & ECB_TE)) {
 		if (!(gpa & ~0x1fffU)) {
 			rc = set_validity_icpt(scb_s, 0x0080U);
 			goto unpin;
@@ -558,8 +558,7 @@ static int pin_blocks(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 	}
 
 	gpa = scb_o->gvrd & ~0x1ffUL;
-	if (gpa && (scb_s->eca & 0x00020000U) &&
-	    !(scb_s->ecd & 0x20000000U)) {
+	if (gpa && (scb_s->eca & ECA_VX) && !(scb_s->ecd & ECD_HOSTREGMGMT)) {
 		if (!(gpa & ~0x1fffUL)) {
 			rc = set_validity_icpt(scb_s, 0x1310U);
 			goto unpin;
@@ -577,7 +576,7 @@ static int pin_blocks(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 	}
 
 	gpa = scb_o->riccbd & ~0x3fUL;
-	if (gpa && (scb_s->ecb3 & 0x01U)) {
+	if (gpa && (scb_s->ecb3 & ECB3_RI)) {
 		if (!(gpa & ~0x1fffUL)) {
 			rc = set_validity_icpt(scb_s, 0x0043U);
 			goto unpin;