s390/kvm,gaccess: shorten put/get_guest code

The put_guest_u*/get_guest_u* are nothing but wrappers for the regular
put_user/get_user uaccess functions. The only difference is that before
accessing user space the guest address must be translated to a user space
address.
Change the order of arguments for the guest access functions so they
match their uaccess parts. Also remove the u* suffix, so we simply
have put_guest/get_guest which will automatically use the right size
dependent on pointer type of the destination/source that now must be
correct.
In result the same behaviour as put_user/get_user except that accesses
must be aligned.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 28 insertions, 24 deletions

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 5afa931aed11..d78824b18e9d 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -188,8 +188,9 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 		vcpu->stat.deliver_emergency_signal++;
 		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
 						 inti->emerg.code, 0);
-		rc  = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1201);
-		rc |= put_guest_u16(vcpu, __LC_EXT_CPU_ADDR, inti->emerg.code);
+		rc  = put_guest(vcpu, 0x1201, (u16 *)__LC_EXT_INT_CODE);
+		rc |= put_guest(vcpu, inti->emerg.code,
+				(u16 *)__LC_EXT_CPU_ADDR);
 		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
@@ -200,8 +201,9 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 		vcpu->stat.deliver_external_call++;
 		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
 						 inti->extcall.code, 0);
-		rc  = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1202);
-		rc |= put_guest_u16(vcpu, __LC_EXT_CPU_ADDR, inti->extcall.code);
+		rc  = put_guest(vcpu, 0x1202, (u16 *)__LC_EXT_INT_CODE);
+		rc |= put_guest(vcpu, inti->extcall.code,
+				(u16 *)__LC_EXT_CPU_ADDR);
 		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
@@ -213,12 +215,13 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 		vcpu->stat.deliver_service_signal++;
 		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
 						 inti->ext.ext_params, 0);
-		rc  = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2401);
+		rc  = put_guest(vcpu, 0x2401, (u16 *)__LC_EXT_INT_CODE);
 		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
 				      __LC_EXT_NEW_PSW, sizeof(psw_t));
-		rc |= put_guest_u32(vcpu, __LC_EXT_PARAMS, inti->ext.ext_params);
+		rc |= put_guest(vcpu, inti->ext.ext_params,
+				(u32 *)__LC_EXT_PARAMS);
 		break;
 	case KVM_S390_INT_VIRTIO:
 		VCPU_EVENT(vcpu, 4, "interrupt: virtio parm:%x,parm64:%llx",
@@ -227,15 +230,16 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
 						 inti->ext.ext_params,
 						 inti->ext.ext_params2);
-		rc  = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x2603);
-		rc |= put_guest_u16(vcpu, __LC_EXT_CPU_ADDR, 0x0d00);
+		rc  = put_guest(vcpu, 0x2603, (u16 *)__LC_EXT_INT_CODE);
+		rc |= put_guest(vcpu, 0x0d00, (u16 *)__LC_EXT_CPU_ADDR);
 		rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
 				      __LC_EXT_NEW_PSW, sizeof(psw_t));
-		rc |= put_guest_u32(vcpu, __LC_EXT_PARAMS, inti->ext.ext_params);
-		rc |= put_guest_u64(vcpu, __LC_EXT_PARAMS2,
-				    inti->ext.ext_params2);
+		rc |= put_guest(vcpu, inti->ext.ext_params,
+				(u32 *)__LC_EXT_PARAMS);
+		rc |= put_guest(vcpu, inti->ext.ext_params2,
+				(u64 *)__LC_EXT_PARAMS2);
 		break;
 	case KVM_S390_SIGP_STOP:
 		VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu stop");
@@ -274,9 +278,9 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 		vcpu->stat.deliver_program_int++;
 		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
 						 inti->pgm.code, 0);
-		rc  = put_guest_u16(vcpu, __LC_PGM_INT_CODE, inti->pgm.code);
-		rc |= put_guest_u16(vcpu, __LC_PGM_ILC,
-				    table[vcpu->arch.sie_block->ipa >> 14]);
+		rc  = put_guest(vcpu, inti->pgm.code, (u16 *)__LC_PGM_INT_CODE);
+		rc |= put_guest(vcpu, table[vcpu->arch.sie_block->ipa >> 14],
+				(u16 *)__LC_PGM_ILC);
 		rc |= copy_to_guest(vcpu, __LC_PGM_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
@@ -291,7 +295,7 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 						 inti->mchk.mcic);
 		rc  = kvm_s390_vcpu_store_status(vcpu,
 						 KVM_S390_STORE_STATUS_PREFIXED);
-		rc |= put_guest_u64(vcpu, __LC_MCCK_CODE, inti->mchk.mcic);
+		rc |= put_guest(vcpu, inti->mchk.mcic, (u64 *) __LC_MCCK_CODE);
 		rc |= copy_to_guest(vcpu, __LC_MCK_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
@@ -308,14 +312,14 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
 		vcpu->stat.deliver_io_int++;
 		trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
 						 param0, param1);
-		rc  = put_guest_u16(vcpu, __LC_SUBCHANNEL_ID,
-				    inti->io.subchannel_id);
-		rc |= put_guest_u16(vcpu, __LC_SUBCHANNEL_NR,
-				    inti->io.subchannel_nr);
-		rc |= put_guest_u32(vcpu, __LC_IO_INT_PARM,
-				    inti->io.io_int_parm);
-		rc |= put_guest_u32(vcpu, __LC_IO_INT_WORD,
-				    inti->io.io_int_word);
+		rc  = put_guest(vcpu, inti->io.subchannel_id,
+				(u16 *) __LC_SUBCHANNEL_ID);
+		rc |= put_guest(vcpu, inti->io.subchannel_nr,
+				(u16 *) __LC_SUBCHANNEL_NR);
+		rc |= put_guest(vcpu, inti->io.io_int_parm,
+				(u32 *) __LC_IO_INT_PARM);
+		rc |= put_guest(vcpu, inti->io.io_int_word,
+				(u32 *) __LC_IO_INT_WORD);
 		rc |= copy_to_guest(vcpu, __LC_IO_OLD_PSW,
 				    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 		rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,
@@ -340,7 +344,7 @@ static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu)
 		return 0;
 	if (!(vcpu->arch.sie_block->gcr[0] & 0x800ul))
 		return 0;
-	rc  = put_guest_u16(vcpu, __LC_EXT_INT_CODE, 0x1004);
+	rc  = put_guest(vcpu, 0x1004, (u16 *)__LC_EXT_INT_CODE);
 	rc |= copy_to_guest(vcpu, __LC_EXT_OLD_PSW,
 			    &vcpu->arch.sie_block->gpsw, sizeof(psw_t));
 	rc |= copy_from_guest(vcpu, &vcpu->arch.sie_block->gpsw,