Merge tag 'kvm-s390-next-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

KVM: s390: Fixes and features for 4.11 (via kvm/next)

- enable some simd extensions for guests
- enable nx for guests
- debug log for cpu model
- PER fixes
- remove bitwise annotation from ar_t
- detect guests in operation exception program check loops
- fix potential null-pointer dereference for ucontrol guests

- also contains merge for fix that went into 4.10 to avoid conflicts

1 files changed, 16 insertions, 10 deletions

diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c
index 4aa8a7e2a1da..4492c9363178 100644
--- a/arch/s390/kvm/gaccess.c
+++ b/arch/s390/kvm/gaccess.c
@@ -373,7 +373,7 @@ void ipte_unlock(struct kvm_vcpu *vcpu)
 		ipte_unlock_simple(vcpu);
 }
 
-static int ar_translation(struct kvm_vcpu *vcpu, union asce *asce, ar_t ar,
+static int ar_translation(struct kvm_vcpu *vcpu, union asce *asce, u8 ar,
 			  enum gacc_mode mode)
 {
 	union alet alet;
@@ -465,7 +465,9 @@ static int ar_translation(struct kvm_vcpu *vcpu, union asce *asce, ar_t ar,
 struct trans_exc_code_bits {
 	unsigned long addr : 52; /* Translation-exception Address */
 	unsigned long fsi  : 2;  /* Access Exception Fetch/Store Indication */
-	unsigned long	   : 6;
+	unsigned long	   : 2;
+	unsigned long b56  : 1;
+	unsigned long	   : 3;
 	unsigned long b60  : 1;
 	unsigned long b61  : 1;
 	unsigned long as   : 2;  /* ASCE Identifier */
@@ -485,7 +487,7 @@ enum prot_type {
 };
 
 static int trans_exc(struct kvm_vcpu *vcpu, int code, unsigned long gva,
-		     ar_t ar, enum gacc_mode mode, enum prot_type prot)
+		     u8 ar, enum gacc_mode mode, enum prot_type prot)
 {
 	struct kvm_s390_pgm_info *pgm = &vcpu->arch.pgm;
 	struct trans_exc_code_bits *tec;
@@ -497,14 +499,18 @@ static int trans_exc(struct kvm_vcpu *vcpu, int code, unsigned long gva,
 	switch (code) {
 	case PGM_PROTECTION:
 		switch (prot) {
+		case PROT_TYPE_LA:
+			tec->b56 = 1;
+			break;
+		case PROT_TYPE_KEYC:
+			tec->b60 = 1;
+			break;
 		case PROT_TYPE_ALC:
 			tec->b60 = 1;
 			/* FALL THROUGH */
 		case PROT_TYPE_DAT:
 			tec->b61 = 1;
 			break;
-		default: /* LA and KEYC set b61 to 0, other params undefined */
-			return code;
 		}
 		/* FALL THROUGH */
 	case PGM_ASCE_TYPE:
@@ -539,7 +545,7 @@ static int trans_exc(struct kvm_vcpu *vcpu, int code, unsigned long gva,
 }
 
 static int get_vcpu_asce(struct kvm_vcpu *vcpu, union asce *asce,
-			 unsigned long ga, ar_t ar, enum gacc_mode mode)
+			 unsigned long ga, u8 ar, enum gacc_mode mode)
 {
 	int rc;
 	struct psw_bits psw = psw_bits(vcpu->arch.sie_block->gpsw);
@@ -771,7 +777,7 @@ static int low_address_protection_enabled(struct kvm_vcpu *vcpu,
 	return 1;
 }
 
-static int guest_page_range(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar,
+static int guest_page_range(struct kvm_vcpu *vcpu, unsigned long ga, u8 ar,
 			    unsigned long *pages, unsigned long nr_pages,
 			    const union asce asce, enum gacc_mode mode)
 {
@@ -803,7 +809,7 @@ static int guest_page_range(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar,
 	return 0;
 }
 
-int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data,
+int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, u8 ar, void *data,
 		 unsigned long len, enum gacc_mode mode)
 {
 	psw_t *psw = &vcpu->arch.sie_block->gpsw;
@@ -877,7 +883,7 @@ int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra,
  * Note: The IPTE lock is not taken during this function, so the caller
  * has to take care of this.
  */
-int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar,
+int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva, u8 ar,
 			    unsigned long *gpa, enum gacc_mode mode)
 {
 	psw_t *psw = &vcpu->arch.sie_block->gpsw;
@@ -910,7 +916,7 @@ int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar,
 /**
  * check_gva_range - test a range of guest virtual addresses for accessibility
  */
-int check_gva_range(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar,
+int check_gva_range(struct kvm_vcpu *vcpu, unsigned long gva, u8 ar,
 		    unsigned long length, enum gacc_mode mode)
 {
 	unsigned long gpa;