From: Santosh R <sankrast@gmail.com>
To: dev@dpdk.org
Subject: [dpdk-dev] device reset handling with igb_uio
Date: Fri, 14 Jun 2019 19:27:52 +0530 [thread overview]
Message-ID: <CAJ-v4=R3XUO77Vuv3aJFvJt7HK2N=NkoZNwOkffnch9YnUOqKA@mail.gmail.com> (raw)
In-Reply-To: <CAJ-v4=TYVQA_mgJmubJZqivJ19ZRfb460bRDeYuatUXmnr=NnA@mail.gmail.com>
Hi,
I have some question on igb_uio.
From the below function call traces, vfio-pci module frees/allocates msi-x
vector table as part of
interrupt disable/enable. Where as igb-uio module, only masks/unmasks the
msi-x interrupt.
Does this mean, when using igb_uio, device can't undergo reset which clears
MSI-X vector table?
How to handle device reset with igb_uio?
igb-uio:
rte_intr_disable->uio_intr_disable->igbuio_pci_irqcontrol->pci_msi_mask_irq
rte_intr_enable->uio_intr_enable->igbuio_pci_irqcontrol->pci_msi_unmask_irq
igbuio_pci_open->igbuio_pci_enable_interrupts->pci_alloc_irq_vectors/request_irq
igbuio_pci_release->igbuio_pci_disable_interrupts->free_irq->pci_free_irq_vectors
vfio-pci:
rte_intr_disable->vfio_disable_msix->vfio_pci_ioctl->vfio_msi_disable->pci_free_irq_vectors
rte_intr_enable->vfio_enable_msix->vfio_pci_ioctl->vfio_msi_enable->pci_alloc_irq_vectors/vfio_msi_set_vector_signal->request_irq
Regards
-Santosh
parent reply other threads:[~2019-06-14 13:58 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <CAJ-v4=TYVQA_mgJmubJZqivJ19ZRfb460bRDeYuatUXmnr=NnA@mail.gmail.com>]
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