diff options
Diffstat (limited to 'target/s390x/kvm.c')
| -rw-r--r-- | target/s390x/kvm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index 97a662ad0e..54864c259c 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -28,6 +28,7 @@ #include "cpu.h" #include "internal.h" #include "kvm_s390x.h" +#include "sysemu/kvm_int.h" #include "qapi/error.h" #include "qemu/error-report.h" #include "qemu/timer.h" @@ -122,6 +123,15 @@ */ #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \ (max_cpus + NR_LOCAL_IRQS)) +/* + * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages + * as the dirty bitmap must be managed by bitops that take an int as + * position indicator. If we have a guest beyond that we will split off + * new subregions. The split must happen on a segment boundary (1MB). + */ +#define KVM_MEM_MAX_NR_PAGES ((1ULL << 31) - 1) +#define SEG_MSK (~0xfffffULL) +#define KVM_SLOT_MAX_BYTES ((KVM_MEM_MAX_NR_PAGES * TARGET_PAGE_SIZE) & SEG_MSK) static CPUWatchpoint hw_watchpoint; /* @@ -355,6 +365,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) */ /* kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); */ + kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES); return 0; } |