vfio/platform: trigger an interrupt via eventfd

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This patch allows to set an eventfd for a platform device's interrupt,
and also to trigger the interrupt eventfd from userspace for testing.
Level sensitive interrupts are marked as maskable and are handled in
a later patch. Edge triggered interrupts are not advertised as maskable
and are implemented here using a simple and efficient IRQ handler.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
[Baptiste Reynal: fix masked interrupt initialization]
Signed-off-by: Baptiste Reynal <b.reynal@virtualopensystems.com>
Reviewed-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

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Antonios Motakis 2015-03-16 14:08:50 -06:00 • committed by Alex Williamson

parent 9a36321c8d

commit 57f972e2b3

2 changed files with 94 additions and 2 deletions

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94

drivers/vfio/platform/vfio_platform_irq.c

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2

drivers/vfio/platform/vfio_platform_private.h

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