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authorJan Kiszka <jan.kiszka@web.de>2009-04-13 11:59:32 +0200
committerAvi Kivity <avi@redhat.com>2009-04-22 13:52:09 +0300
commit4cd481f68dde99ac416003b825c835f71e364393 (patch)
treeee30cd2e24534285cdb2b4315e7d441c9689ea99 /include
parentbf47a760f66add7870fba33ab50f58b550d6bbd1 (diff)
KVM: Fix overlapping check for memory slots
When checking for overlapping slots on registration of a new one, kvm currently also considers zero-length (ie. deleted) slots and rejects requests incorrectly. This finally denies user space from joining slots. Fix the check by skipping deleted slots and advertise this via a KVM_CAP_JOIN_MEMORY_REGIONS_WORKS. Cc: stable@kernel.org Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 311a073afe8..8cc137911b3 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -409,6 +409,8 @@ struct kvm_trace_rec {
#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
#define KVM_CAP_DEVICE_DEASSIGNMENT 27
#endif
+/* Another bug in KVM_SET_USER_MEMORY_REGION fixed: */
+#define KVM_CAP_JOIN_MEMORY_REGIONS_WORKS 30
#ifdef KVM_CAP_IRQ_ROUTING