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-rw-r--r--hw/s390x/s390-stattrib-kvm.c3
-rw-r--r--hw/s390x/s390-stattrib.c5
2 files changed, 5 insertions, 3 deletions
diff --git a/hw/s390x/s390-stattrib-kvm.c b/hw/s390x/s390-stattrib-kvm.c
index 480551c3db..c7e1f35524 100644
--- a/hw/s390x/s390-stattrib-kvm.c
+++ b/hw/s390x/s390-stattrib-kvm.c
@@ -105,7 +105,8 @@ static void kvm_s390_stattrib_synchronize(S390StAttribState *sa)
KVMS390StAttribState *sas = KVM_S390_STATTRIB(sa);
MachineState *machine = MACHINE(qdev_get_machine());
unsigned long max = machine->maxram_size / TARGET_PAGE_SIZE;
- unsigned long cx, len = 1 << 19;
+ /* We do not need to reach the maximum buffer size allowed */
+ unsigned long cx, len = KVM_S390_SKEYS_MAX / 2;
int r;
struct kvm_s390_cmma_log clog = {
.flags = 0,
diff --git a/hw/s390x/s390-stattrib.c b/hw/s390x/s390-stattrib.c
index 5161a1659b..766f2015a4 100644
--- a/hw/s390x/s390-stattrib.c
+++ b/hw/s390x/s390-stattrib.c
@@ -21,7 +21,8 @@
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
-#define CMMA_BLOCK_SIZE (1 * KiB)
+/* 512KiB cover 2GB of guest memory */
+#define CMMA_BLOCK_SIZE (512 * KiB)
#define STATTR_FLAG_EOS 0x01ULL
#define STATTR_FLAG_MORE 0x02ULL
@@ -203,7 +204,7 @@ static int cmma_save(QEMUFile *f, void *opaque, int final)
S390StAttribClass *sac = S390_STATTRIB_GET_CLASS(sas);
uint8_t *buf;
int r, cx, reallen = 0, ret = 0;
- uint32_t buflen = 1 << 19; /* 512kB cover 2GB of guest memory */
+ uint32_t buflen = CMMA_BLOCK_SIZE;
uint64_t start_gfn = sas->migration_cur_gfn;
buf = g_try_malloc(buflen);