diff options
| author | Ross Lagerwall <ross.lagerwall@citrix.com> | 2016-03-17 16:52:00 +0000 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2016-04-06 11:29:18 +0100 |
| commit | dfd74a1edfaba5864276a2859190a8d242d18952 (patch) | |
| tree | e5c6287363a3b7e75b34c0b84e1ffa422894a0e2 /Documentation/IRQ-affinity.txt | |
| parent | 60901df3aed230d4565dca003f11b6a95fbf30d9 (diff) | |
xen/balloon: Fix crash when ballooning on x86 32 bit PAE
Commit 55b3da98a40dbb3776f7454daf0d95dde25c33d2 (xen/balloon: find
non-conflicting regions to place hotplugged memory) caused a
regression in 4.4.
When ballooning on an x86 32 bit PAE system with close to 64 GiB of
memory, the address returned by allocate_resource may be above 64 GiB.
When using CONFIG_SPARSEMEM, this setup is limited to using physical
addresses < 64 GiB. When adding memory at this address, it runs off
the end of the mem_section array and causes a crash. Instead, fail
the ballooning request.
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Cc: <stable@vger.kernel.org> # 4.4+
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'Documentation/IRQ-affinity.txt')