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kvm tools: Repair running on non ioeventfd-capable platforms

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Commit d3923126a24212f1e746a84a575dadbd9f259418 added a bunch of
nice error checking around ioevent__init() but the init may gracefully
fail if ioevents simply aren't supported (PPC64 KVM).

This commit adds a new return code for the init -- positive, but
identifiable as 'not success 0'.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Matt Evans
2012-01-31 17:30:41 +11:00
committed by Will Deacon
parent f7c17d7c22
commit 85dde7b26a
1 changed files with 1 additions and 1 deletions
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ioeventfd.c
+1 -1
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@@ -67,7 +67,7 @@ int ioeventfd__init(struct kvm *kvm)
ioeventfd_avail = kvm__supports_extension(kvm, KVM_CAP_IOEVENTFD);
if (!ioeventfd_avail)
return -ENOSYS;
return 1; /* Not fatal, but let caller determine no-go. */
epoll_fd = epoll_create(IOEVENTFD_MAX_EVENTS);
if (epoll_fd < 0)