diff options
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_KVM/1003')
| -rw-r--r-- | gitlab/issues_text/target_missing/host_missing/accel_KVM/1003 | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/gitlab/issues_text/target_missing/host_missing/accel_KVM/1003 b/gitlab/issues_text/target_missing/host_missing/accel_KVM/1003 deleted file mode 100644 index f21487f3d..000000000 --- a/gitlab/issues_text/target_missing/host_missing/accel_KVM/1003 +++ /dev/null @@ -1,21 +0,0 @@ -"Cannot allocate memory" when boots a VM > 1026GB memory with -accel kvm -Description of problem: -I can boot an empty VM using command `qemu-system-x86_64 -m 1026G -accel kvm -vnc :1` or `qemu-system-x86_64 -m 8T -vnc :1` - -But when I use `qemu-system-x86_64 -m 1027G -accel kvm -vnc :1`, it will not boot: - -``` -root@debian11:~# qemu-system-x86_64 -m 1027G -accel kvm -vnc :1 -qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=1, start=0x100000000, size=0x10000000000: Cannot allocate memory -kvm_set_phys_mem: error registering slot: Cannot allocate memory -Aborted -``` - -Which means, with `-accel kvm`, it only can boot a VM which memory <= 1026G, but without these args, it can boot whatever you want. -Steps to reproduce: -1. sysctl vm.overcommit_memory=1 # enable overcommit first -2. qemu-system-x86_64 -m 1027G -accel kvm -vnc :1 -Additional information: -The qemu I use is compiled from the latest source, not the package provided by debian. - -Hardware is `PowerEdge R630` with `E5-2630 v4` * 2, 128G physical RAM. |