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Even though in non-debug, we don't actually log anything here, even
assembling the arguments to vfu_log() has a performance impact. Hide
them behind a DEBUG_SGL define - even in a DEBUG build, they are
particularly noisy and low-value.
Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Swapnil Ingle <swapnil.ingle@nutanix.com>
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This test is flaky: there is some kind of race that causes the test to
hang. Now we are run as part of qemu CI, we need to disable this by
default, until we can find time to fix the test.
Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Swapnil Ingle <swapnil.ingle@nutanix.com>
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When an ioeventfd is written to, KVM discards the value since it has no
memory to write it to, and simply kicks the eventfd. This a problem for
devices such a NVMe controllers that need the value (e.g. doorbells on
BAR0). This patch allows the vfio-user server to pass a file descriptor
that can be mmap'ed and KVM can write the ioeventfd value to this
_shadow_ memory instead of discarding it. This shadow memory is not
exposed to the guest.
Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>
Reviewed-by: John Levon <john.levon@nutanix.com>
Change-Id: Iad849c94076ffa5988e034c8bf7ec312d01f095f
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The Meson build system used by many other virt projects (QEMU, libvirt
and others) is easier to understand & maintain rules for than cmake,
guiding towards best practice.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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