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| author | Igor Mammedov <imammedo@redhat.com> | 2015-03-20 12:21:37 +0000 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-04-24 17:14:14 -0400 |
| commit | b94e91cc2225ea311e6bb8500f492702e319b348 (patch) | |
| tree | b7266ff8f0f94e2aee3ea6f679f6f79449db1e36 /include | |
| parent | 48ca7d78ff4efccbf3d670774d29dd52b7af912d (diff) | |
kvm: avoid page allocation failure in kvm_set_memory_region()
[ Upstream commit 744961341d472db6272ed9b42319a90f5a2aa7c4 ]
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>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions