diff options
| author | David Matlack <dmatlack@google.com> | 2025-08-22 21:24:57 +0000 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2025-08-27 12:14:04 -0600 |
| commit | 924947804f2b9e564efdc814420d21b239df2dd4 (patch) | |
| tree | c65cebe89fcdc1c7038c4451758618e8dcb79c4f /tools/testing/selftests/vfio/lib | |
| parent | 346cd58f1fb588f8ff193d76cf0bb455446ace03 (diff) | |
vfio: selftests: Enable asserting MSI eventfds not firing
Make it possible to assert that a given MSI eventfd did _not_ fire by
adding a helper to mark an eventfd non-blocking. Demonstrate this in
vfio_pci_device_test by asserting the MSI eventfd did not fire before
vfio_pci_irq_trigger().
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20250822212518.4156428-11-dmatlack@google.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'tools/testing/selftests/vfio/lib')
| -rw-r--r-- | tools/testing/selftests/vfio/lib/include/vfio_util.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/vfio/lib/include/vfio_util.h b/tools/testing/selftests/vfio/lib/include/vfio_util.h index db08646c2819..9c928fcc00e2 100644 --- a/tools/testing/selftests/vfio/lib/include/vfio_util.h +++ b/tools/testing/selftests/vfio/lib/include/vfio_util.h @@ -2,6 +2,7 @@ #ifndef SELFTESTS_VFIO_LIB_INCLUDE_VFIO_UTIL_H #define SELFTESTS_VFIO_LIB_INCLUDE_VFIO_UTIL_H +#include <fcntl.h> #include <string.h> #include <linux/vfio.h> #include <linux/list.h> @@ -130,6 +131,17 @@ void vfio_pci_irq_enable(struct vfio_pci_device *device, u32 index, void vfio_pci_irq_disable(struct vfio_pci_device *device, u32 index); void vfio_pci_irq_trigger(struct vfio_pci_device *device, u32 index, u32 vector); +static inline void fcntl_set_nonblock(int fd) +{ + int r; + + r = fcntl(fd, F_GETFL, 0); + VFIO_ASSERT_NE(r, -1, "F_GETFL failed for fd %d\n", fd); + + r = fcntl(fd, F_SETFL, r | O_NONBLOCK); + VFIO_ASSERT_NE(r, -1, "F_SETFL O_NONBLOCK failed for fd %d\n", fd); +} + static inline void vfio_pci_msi_enable(struct vfio_pci_device *device, u32 vector, int count) { |