After I changed PHYS_ADDR_MASK, qemu vm can start when memory >=1024G , but kvm vm still hang.
-# define PHYS_ADDR_MASK 0xffffffffffLL +# define PHYS_ADDR_MASK 0xfffffffffffLL -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1562653 Title: Ubuntu 15.10: QEMU VM hang if memory >= 1T Status in QEMU: New Status in qemu package in Ubuntu: Incomplete Bug description: 1. Ubuntu 15.10 x86_64 installed on HP SuperDome X with 8CPUs and 4T memory. 2. Create a VM, install Ubuntu 15.10, if memory >= 1T , VM hang when start. If memory < 1T, it is good. <domain type='kvm'> <name>u1510-1</name> <uuid>39eefe1e-4829-4843-b892-026d143f3ec7</uuid> <memory unit='KiB'>1073741824</memory> <currentMemory unit='KiB'>1073741824</currentMemory> <vcpu placement='static'>16</vcpu> <os> <type arch='x86_64' machine='pc-i440fx-2.3'>hvm</type> <boot dev='hd'/> <boot dev='cdrom'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='directsync'/> <source file='/vms/images/u1510-1.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' target='0' unit='0'/> </disk> <controller type='pci' index='0' model='pci-root'/> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <interface type='bridge'> <mac address='0c:da:41:1d:ae:f1'/> <source bridge='vswitch0'/> <model type='virtio'/> <driver name='vhost'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'> <listen type='address' address='0.0.0.0'/> </graphics> <video> <model type='cirrus' vram='16384' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> </memballoon> </devices> </domain> 3. The panic stack is ... cannot show async_page_fault+0x28 ioread32_rep+0x38 ata_sff_data_xfer32+0x8a ata_pio_sector+0x93 ata_pio_sectors+0x34 ata_sff_hsm_move+0x226 RIP: kthread_data+0x10 CR2: FFFFFFFF_FFFFFFD8 4. Change the host os to Redhat 7.2 , the vm is good even memory >=3.8T. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1562653/+subscriptions
