From: Nick Wang Date: Mon, 25 Mar 2013 16:22:56 +0000 (+0100) Subject: KVM: s390: Change the virtual memory mapping location for virtio devices X-Git-Tag: v3.10-rc1~87^2~79 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=3188bf6b809ba5e7df7b9f000634f08e8abbb76a;p=~emulex%2Finfiniband.git 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 Reviewed-by: Christian Borntraeger Signed-off-by: Cornelia Huck Signed-off-by: Gleb Natapov --- diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 6711e65764b..2ea6165366b 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; }