Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753053AbbHJNWA (ORCPT ); Mon, 10 Aug 2015 09:22:00 -0400 Received: from mail-wi0-f181.google.com ([209.85.212.181]:38609 "EHLO mail-wi0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751989AbbHJNVz (ORCPT ); Mon, 10 Aug 2015 09:21:55 -0400 From: Eric Auger To: eric.auger@st.com, eric.auger@linaro.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, christoffer.dall@linaro.org, marc.zyngier@arm.com, alex.williamson@redhat.com, feng.wu@intel.com Cc: linux-kernel@vger.kernel.org, patches@linaro.org, pbonzini@redhat.com Subject: [PATCH v3 02/10] VFIO: platform: test forwarded state when selecting the IRQ handler Date: Mon, 10 Aug 2015 15:20:56 +0200 Message-Id: <1439212864-12954-3-git-send-email-eric.auger@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439212864-12954-1-git-send-email-eric.auger@linaro.org> References: <1439212864-12954-1-git-send-email-eric.auger@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1880 Lines: 52 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 --- 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 b5cb8c7..40f057a 100644 --- a/drivers/vfio/platform/vfio_platform_irq.c +++ b/drivers/vfio/platform/vfio_platform_irq.c @@ -262,7 +262,8 @@ 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 1d2d4d6..8b4f814 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/