From: Zhu Lingshan <lingshan.zhu@intel•com>
To: mst@redhat•com, jasowang@redhat•com
Cc: netdev@vger•kernel.org,
virtualization@lists•linux-foundation.org,
Zhu Lingshan <lingshan.zhu@intel•com>
Subject: [PATCH V2 0/4] vDPA/ifcvf: implement shared IRQ feature
Date: Tue, 25 Jan 2022 17:17:40 +0800 [thread overview]
Message-ID: <20220125091744.115996-1-lingshan.zhu@intel.com> (raw)
It has been observed that on some platforms/devices, there may
not be enough MSI vectors for virtqueues and the config change.
Under such circumstances, the interrupt sources of a device
have to share vectors/IRQs.
This series implemented a shared IRQ feature for ifcvf.
Please help review.
Changes from V1:
(1) Enable config interrupt when only one vector is allocated(Michael)
(2) Clean vectors/IRQs if failed to request config interrupt
since config interrupt is a must(Michael)
(3) Keep local vdpa_ops, disable irq_bypass by setting IRQ = -EINVAL
for shared IRQ case(Michael)
(4) Improvements on error messages(Michael)
(5) Squash functions implementation patches to the callers(Michael)
Zhu Lingshan (4):
vDPA/ifcvf: implement IO read/write helpers in the header file
vDPA/ifcvf: implement device MSIX vector allocator
vhost_vdpa: don't setup irq offloading when irq_num < 0
vDPA/ifcvf: implement shared IRQ feature
drivers/vdpa/ifcvf/ifcvf_base.c | 67 +++------
drivers/vdpa/ifcvf/ifcvf_base.h | 60 +++++++-
drivers/vdpa/ifcvf/ifcvf_main.c | 254 ++++++++++++++++++++++++++++----
drivers/vhost/vdpa.c | 3 +
4 files changed, 305 insertions(+), 79 deletions(-)
--
2.27.0
next reply other threads:[~2022-01-25 9:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-25 9:17 Zhu Lingshan [this message]
2022-01-25 9:17 ` [PATCH V2 1/4] vDPA/ifcvf: implement IO read/write helpers in the header file Zhu Lingshan
2022-01-25 9:17 ` [PATCH V2 2/4] vDPA/ifcvf: implement device MSIX vector allocator Zhu Lingshan
2022-01-25 19:36 ` Michael S. Tsirkin
2022-01-26 12:18 ` Zhu, Lingshan
2022-01-25 9:17 ` [PATCH V2 3/4] vhost_vdpa: don't setup irq offloading when irq_num < 0 Zhu Lingshan
2022-01-25 19:17 ` kernel test robot
2022-01-25 19:30 ` Michael S. Tsirkin
2022-01-26 12:18 ` Zhu, Lingshan
2022-01-25 9:17 ` [PATCH V2 4/4] vDPA/ifcvf: implement shared IRQ feature Zhu Lingshan
2022-01-25 19:42 ` Michael S. Tsirkin
2022-01-26 12:22 ` Zhu, Lingshan
2022-01-25 19:32 ` [PATCH V2 0/4] " Michael S. Tsirkin
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