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authorNick Wang <jfwang@us.ibm.com>2013-03-25 20:22:56 +0400
committerGleb Natapov <gleb@redhat.com>2013-04-02 17:14:49 +0400
commit3188bf6b809ba5e7df7b9f000634f08e8abbb76a (patch)
tree9b40d12c4b63cfd5c89279eba4a9f4f71ce0e627 /drivers/s390
parentb13b5dc7c96d40ebdadbdb752a92ecde5a9f2914 (diff)
downloadlinux-3188bf6b809ba5e7df7b9f000634f08e8abbb76a.tar.xz
KVM: s390: Change the virtual memory mapping location for virtio devices
The current location for mapping virtio devices does not take into consideration the standby memory. This causes the failure of mapping standby memory since the location for the mapping is already taken by the virtio devices. To fix the problem, we move the location to beyond the end of standby memory. Signed-off-by: Nick Wang <jfwang@us.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/kvm/kvm_virtio.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 6711e65764b5..2ea6165366b6 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -443,29 +443,30 @@ static int __init test_devices_support(unsigned long addr)
}
/*
* Init function for virtio
- * devices are in a single page above top of "normal" mem
+ * devices are in a single page above top of "normal" + standby mem
*/
static int __init kvm_devices_init(void)
{
int rc;
+ unsigned long total_memory_size = sclp_get_rzm() * sclp_get_rnmax();
if (!MACHINE_IS_KVM)
return -ENODEV;
- if (test_devices_support(real_memory_size) < 0)
+ if (test_devices_support(total_memory_size) < 0)
return -ENODEV;
- rc = vmem_add_mapping(real_memory_size, PAGE_SIZE);
+ rc = vmem_add_mapping(total_memory_size, PAGE_SIZE);
if (rc)
return rc;
- kvm_devices = (void *) real_memory_size;
+ kvm_devices = (void *) total_memory_size;
kvm_root = root_device_register("kvm_s390");
if (IS_ERR(kvm_root)) {
rc = PTR_ERR(kvm_root);
printk(KERN_ERR "Could not register kvm_s390 root device");
- vmem_remove_mapping(real_memory_size, PAGE_SIZE);
+ vmem_remove_mapping(total_memory_size, PAGE_SIZE);
return rc;
}