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s390x/kvm: sync register support helper function

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Let's unify the code to sync registers by moving the checks into a helper
function can_sync_regs().

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
David Hildenbrand 2014-12-03 15:38:30 +01:00 committed by Cornelia Huck
parent 6781fc412e
commit fdb78ec006
1 changed files with 12 additions and 10 deletions
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22
target-s390x/kvm.c
View file

@ -202,6 +202,11 @@ void kvm_s390_reset_vcpu(S390CPU *cpu)
}
}
static int can_sync_regs(CPUState *cs, int regs)
{
return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
}
int kvm_arch_put_registers(CPUState *cs, int level)
{
S390CPU *cpu = S390_CPU(cs);
@ -216,7 +221,7 @@ int kvm_arch_put_registers(CPUState *cs, int level)
cs->kvm_run->psw_addr = env->psw.addr;
cs->kvm_run->psw_mask = env->psw.mask;
if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
for (i = 0; i < 16; i++) {
cs->kvm_run->s.regs.gprs[i] = env->regs[i];
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
@ -273,9 +278,8 @@ int kvm_arch_put_registers(CPUState *cs, int level)
}
}
if (cap_sync_regs &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
/* access registers and control registers*/
if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
for (i = 0; i < 16; i++) {
cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
cs->kvm_run->s.regs.crs[i] = env->cregs[i];
@ -294,7 +298,7 @@ int kvm_arch_put_registers(CPUState *cs, int level)
}
/* Finally the prefix */
if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
cs->kvm_run->s.regs.prefix = env->psa;
cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
} else {
@ -317,7 +321,7 @@ int kvm_arch_get_registers(CPUState *cs)
env->psw.mask = cs->kvm_run->psw_mask;
/* the GPRS */
if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) {
if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
for (i = 0; i < 16; i++) {
env->regs[i] = cs->kvm_run->s.regs.gprs[i];
}
@ -332,9 +336,7 @@ int kvm_arch_get_registers(CPUState *cs)
}
/* The ACRS and CRS */
if (cap_sync_regs &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS &&
cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) {
if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
for (i = 0; i < 16; i++) {
env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
env->cregs[i] = cs->kvm_run->s.regs.crs[i];
@ -361,7 +363,7 @@ int kvm_arch_get_registers(CPUState *cs)
env->fpc = fpu.fpc;
/* The prefix */
if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) {
if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
env->psa = cs->kvm_run->s.regs.prefix;
}