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Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/intercept.c12
-rw-r--r--arch/s390/kvm/kvm-s390.c3
-rw-r--r--arch/s390/kvm/kvm-s390.h12
-rw-r--r--arch/s390/kvm/priv.c83
4 files changed, 37 insertions, 73 deletions
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index c6ba4dfd7f1..b7d1b2edeeb 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -45,10 +45,8 @@ static int handle_lctlg(struct kvm_vcpu *vcpu)
do {
rc = get_guest(vcpu, vcpu->arch.sie_block->gcr[reg],
(u64 __user *) useraddr);
- if (rc) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- break;
- }
+ if (rc)
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
useraddr += 8;
if (reg == reg3)
break;
@@ -79,10 +77,8 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
reg = reg1;
do {
rc = get_guest(vcpu, val, (u32 __user *) useraddr);
- if (rc) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- break;
- }
+ if (rc)
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
vcpu->arch.sie_block->gcr[reg] &= 0xffffffff00000000ul;
vcpu->arch.sie_block->gcr[reg] |= val;
useraddr += 4;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index f241e3315eb..d05a59c1eea 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -633,8 +633,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
} else {
VCPU_EVENT(vcpu, 3, "%s", "fault in sie instruction");
trace_kvm_s390_sie_fault(vcpu);
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- rc = 0;
+ rc = kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
}
}
VCPU_EVENT(vcpu, 6, "exit sie icptcode %d",
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 4d89d64a816..efc14f68726 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -110,12 +110,12 @@ enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
void kvm_s390_tasklet(unsigned long parm);
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
-int kvm_s390_inject_vm(struct kvm *kvm,
- struct kvm_s390_interrupt *s390int);
-int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
- struct kvm_s390_interrupt *s390int);
-int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
-int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
+int __must_check kvm_s390_inject_vm(struct kvm *kvm,
+ struct kvm_s390_interrupt *s390int);
+int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
+ struct kvm_s390_interrupt *s390int);
+int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
+int __must_check kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
u64 cr6, u64 schid);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 05d186c21ec..23a8370b104 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -36,31 +36,24 @@ static int handle_set_prefix(struct kvm_vcpu *vcpu)
operand2 = kvm_s390_get_base_disp_s(vcpu);
/* must be word boundary */
- if (operand2 & 3) {
- kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- goto out;
- }
+ if (operand2 & 3)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
/* get the value */
- if (get_guest(vcpu, address, (u32 __user *) operand2)) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- goto out;
- }
+ if (get_guest(vcpu, address, (u32 __user *) operand2))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
address = address & 0x7fffe000u;
/* make sure that the new value is valid memory */
if (copy_from_guest_absolute(vcpu, &tmp, address, 1) ||
- (copy_from_guest_absolute(vcpu, &tmp, address + PAGE_SIZE, 1))) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- goto out;
- }
+ (copy_from_guest_absolute(vcpu, &tmp, address + PAGE_SIZE, 1)))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
kvm_s390_set_prefix(vcpu, address);
VCPU_EVENT(vcpu, 5, "setting prefix to %x", address);
trace_kvm_s390_handle_prefix(vcpu, 1, address);
-out:
return 0;
}
@@ -74,49 +67,37 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
operand2 = kvm_s390_get_base_disp_s(vcpu);
/* must be word boundary */
- if (operand2 & 3) {
- kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- goto out;
- }
+ if (operand2 & 3)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
address = vcpu->arch.sie_block->prefix;
address = address & 0x7fffe000u;
/* get the value */
- if (put_guest(vcpu, address, (u32 __user *)operand2)) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- goto out;
- }
+ if (put_guest(vcpu, address, (u32 __user *)operand2))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
VCPU_EVENT(vcpu, 5, "storing prefix to %x", address);
trace_kvm_s390_handle_prefix(vcpu, 0, address);
-out:
return 0;
}
static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
{
u64 useraddr;
- int rc;
vcpu->stat.instruction_stap++;
useraddr = kvm_s390_get_base_disp_s(vcpu);
- if (useraddr & 1) {
- kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- goto out;
- }
+ if (useraddr & 1)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = put_guest(vcpu, vcpu->vcpu_id, (u16 __user *)useraddr);
- if (rc) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- goto out;
- }
+ if (put_guest(vcpu, vcpu->vcpu_id, (u16 __user *)useraddr))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", useraddr);
trace_kvm_s390_handle_stap(vcpu, useraddr);
-out:
return 0;
}
@@ -135,10 +116,8 @@ static int handle_tpi(struct kvm_vcpu *vcpu)
int cc;
addr = kvm_s390_get_base_disp_s(vcpu);
- if (addr & 3) {
- kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- goto out;
- }
+ if (addr & 3)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
cc = 0;
inti = kvm_s390_get_io_int(vcpu->kvm, vcpu->run->s.regs.crs[6], 0);
if (!inti)
@@ -167,7 +146,6 @@ no_interrupt:
/* Set condition code and we're done. */
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
vcpu->arch.sie_block->gpsw.mask |= (cc & 3ul) << 44;
-out:
return 0;
}
@@ -237,12 +215,9 @@ static int handle_stfl(struct kvm_vcpu *vcpu)
rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
&facility_list, sizeof(facility_list));
if (rc)
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- else {
- VCPU_EVENT(vcpu, 5, "store facility list value %x",
- facility_list);
- trace_kvm_s390_handle_stfl(vcpu, facility_list);
- }
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ VCPU_EVENT(vcpu, 5, "store facility list value %x", facility_list);
+ trace_kvm_s390_handle_stfl(vcpu, facility_list);
return 0;
}
@@ -317,25 +292,18 @@ static int handle_lpswe(struct kvm_vcpu *vcpu)
static int handle_stidp(struct kvm_vcpu *vcpu)
{
u64 operand2;
- int rc;
vcpu->stat.instruction_stidp++;
operand2 = kvm_s390_get_base_disp_s(vcpu);
- if (operand2 & 7) {
- kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- goto out;
- }
+ if (operand2 & 7)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- rc = put_guest(vcpu, vcpu->arch.stidp_data, (u64 __user *)operand2);
- if (rc) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- goto out;
- }
+ if (put_guest(vcpu, vcpu->arch.stidp_data, (u64 __user *)operand2))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
VCPU_EVENT(vcpu, 5, "%s", "store cpu id");
-out:
return 0;
}
@@ -377,6 +345,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
int sel2 = vcpu->run->s.regs.gprs[1] & 0xffff;
u64 operand2;
unsigned long mem;
+ int rc = 0;
vcpu->stat.instruction_stsi++;
VCPU_EVENT(vcpu, 4, "stsi: fc: %x sel1: %x sel2: %x", fc, sel1, sel2);
@@ -412,7 +381,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
}
if (copy_to_guest_absolute(vcpu, operand2, (void *) mem, PAGE_SIZE)) {
- kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ rc = kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
goto out_mem;
}
trace_kvm_s390_handle_stsi(vcpu, fc, sel1, sel2, operand2);
@@ -425,7 +394,7 @@ out_mem:
out_fail:
/* condition code 3 */
vcpu->arch.sie_block->gpsw.mask |= 3ul << 44;
- return 0;
+ return rc;
}
static const intercept_handler_t b2_handlers[256] = {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 04:09:47 +0000