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| author | Igor Mammedov <imammedo@redhat.com> | 2015-03-20 12:21:37 (GMT) |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2015-03-24 00:23:44 (GMT) |
| commit | 744961341d472db6272ed9b42319a90f5a2aa7c4 (patch) | |
| tree | 41518f58b292b6abb637edb19fe83f1aaade52d6 /drivers | |
| parent | c806a6ad35bfa6c92249cd0ca4772d5ac3f8cb68 (diff) | |
| download | linux-744961341d472db6272ed9b42319a90f5a2aa7c4.tar.xz | |
kvm: avoid page allocation failure in kvm_set_memory_region()
KVM guest can fail to startup with following trace on host:
qemu-system-x86: page allocation failure: order:4, mode:0x40d0
Call Trace:
dump_stack+0x47/0x67
warn_alloc_failed+0xee/0x150
__alloc_pages_direct_compact+0x14a/0x150
__alloc_pages_nodemask+0x776/0xb80
alloc_kmem_pages+0x3a/0x110
kmalloc_order+0x13/0x50
kmemdup+0x1b/0x40
__kvm_set_memory_region+0x24a/0x9f0 [kvm]
kvm_set_ioapic+0x130/0x130 [kvm]
kvm_set_memory_region+0x21/0x40 [kvm]
kvm_vm_ioctl+0x43f/0x750 [kvm]
Failure happens when attempting to allocate pages for
'struct kvm_memslots', however it doesn't have to be
present in physically contiguous (kmalloc-ed) address
space, change allocation to kvm_kvzalloc() so that
it will be vmalloc-ed when its size is more then a page.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions