lkml.org 
[lkml]   [2015]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 03/13] VFIO: platform: test forwarded state when selecting the IRQ handler
Date
Add a new forwarded flag in vfio_platform_irq.  In case the IRQ
is forwarded, the VFIO platform IRQ handler does not need to
disable the IRQ anymore.

When setting the IRQ handler we now also test the forwarded state. In
case the IRQ is forwarded we select the vfio_irq_handler.

Signed-off-by: Eric Auger <eric.auger@linaro.org>

---

v2:
- add a new forwarded flag and do not use irqd_irq_forwarded anymore
---
drivers/vfio/platform/vfio_platform_irq.c | 3 ++-
drivers/vfio/platform/vfio_platform_private.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c
index ab7658a..d4462fd 100644
--- a/drivers/vfio/platform/vfio_platform_irq.c
+++ b/drivers/vfio/platform/vfio_platform_irq.c
@@ -265,7 +265,8 @@ static int vfio_platform_set_irq_trigger(struct vfio_platform_device *vdev,
struct vfio_platform_irq *irq = &vdev->irqs[index];
irq_handler_t handler;

- if (vdev->irqs[index].flags & VFIO_IRQ_INFO_AUTOMASKED)
+ if (vdev->irqs[index].flags & VFIO_IRQ_INFO_AUTOMASKED &&
+ !irq->forwarded)
handler = vfio_automasked_irq_handler;
else
handler = vfio_irq_handler;
diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h
index 979c191..55e8043 100644
--- a/drivers/vfio/platform/vfio_platform_private.h
+++ b/drivers/vfio/platform/vfio_platform_private.h
@@ -39,6 +39,7 @@ struct vfio_platform_irq {
struct virqfd *unmask;
struct virqfd *mask;
struct irq_bypass_producer producer;
+ bool forwarded;
};

struct vfio_platform_region {
--
1.9.1


\
 
 \ /
  Last update: 2015-11-19 16:21    [W:0.081 / U:0.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site