Amos Kong d8abb8b8b7
kvm: exclude ioeventfd from counting kvm_io_range limit ...
commit 6ea34c9b78c10289846db0abeebd6b84d5aca084 upstream.
We can easily reach the 1000 limit by start VM with a couple
hundred I/O devices (multifunction=on). The hardcode limit
already been adjusted 3 times (6 ~ 200 ~ 300 ~ 1000).
In userspace, we already have maximum file descriptor to
limit ioeventfd count. But kvm_io_bus devices also are used
for pit, pic, ioapic, coalesced_mmio. They couldn't be limited
by maximum file descriptor.
Currently only ioeventfds take too much kvm_io_bus devices,
so just exclude it from counting kvm_io_range limit.
Also fixed one indent issue in kvm_host.h
Signed-off-by: Amos Kong <akong@redhat.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Signed-off-by: Gleb Natapov <gleb@redhat.com >
[wt: next patch depends on this one]
Signed-off-by: Willy Tarreau <w@1wt.eu >
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Amos Kong
d8abb8b8b7