diff options
| author | Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> | 2018-07-05 12:39:30 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2018-07-11 14:36:54 +0200 |
| commit | 17f4566657df51c5e0cb40f30491e058d74d63c8 (patch) | |
| tree | 921daafe563ac787dbd4b0033ebfe9617f7fe1b8 | |
| parent | c447afd5783b9237fa51b7a85777007d8d568bfc (diff) | |
s390x/storage attributes: fix CMMA_BLOCK_SIZE usage
The macro CMMA_BLOCK_SIZE was defined but not used, and a hardcoded
value was instead used in the code.
This patch fixes the value of CMMA_BLOCK_SIZE and uses it in the
appropriate place in the code, and fixes another case of hardcoded
value in the KVM backend, replacing it with the more appropriate
constant KVM_S390_CMMA_SIZE_MAX.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Message-Id: <1530787170-3101-1-git-send-email-imbrenda@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| -rw-r--r-- | hw/s390x/s390-stattrib-kvm.c | 3 | ||||
| -rw-r--r-- | hw/s390x/s390-stattrib.c | 5 |
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); |