From: Logan Gunthorpe <logang@deltatee.com>
To: Dave Jiang <dave.jiang@intel.com>,
linux-kernel@vger.kernel.org, linux-ntb@googlegroups.com,
linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-kselftest@vger.kernel.org, Jon Mason <jdmason@kudzu.us>,
Bjorn Helgaas <bhelgaas@google.com>,
Joerg Roedel <joro@8bytes.org>
Cc: Allen Hubbe <allenbh@gmail.com>,
Serge Semin <fancer.lancer@gmail.com>,
Eric Pilmore <epilmore@gigaio.com>
Subject: Re: [PATCH 0/9] Support using MSI interrupts in ntb_transport
Date: Thu, 31 Jan 2019 13:48:31 -0700 [thread overview]
Message-ID: <bafe9db4-6d5b-0453-d7e7-e49e9293dd01@deltatee.com> (raw)
In-Reply-To: <345197a6-89e6-c0de-5f7b-a646b5f396c9@intel.com>
On 2019-01-31 1:20 p.m., Dave Jiang wrote:
> Does this work when the system moves the MSI vector either via software
> (irqbalance) or BIOS APIC programming (some modes cause round robin
> behavior)?
I don't know how irqbalance works, and I'm not sure what you are
referring to by BIOS APIC programming, however I would expect these
things would not be a problem.
The MSI code I'm presenting here doesn't do anything crazy with the
interrupts, it allocates and uses them just as any PCI driver would. The
only real difference here is that instead of a piece of hardware sending
the IRQ TLP, it will be sent through the memory window (which, from the
OS's perspective, is just coming from an NTB hardware proxy alias).
Logan
next prev parent reply other threads:[~2019-01-31 20:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-31 18:56 [PATCH 0/9] Support using MSI interrupts in ntb_transport Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 1/9] iommu/vt-d: Allow interrupts from the entire bus for aliased devices Logan Gunthorpe
2019-02-01 16:44 ` Joerg Roedel
2019-02-01 17:27 ` Logan Gunthorpe
2019-02-05 19:19 ` Jacob Pan
2019-02-05 20:40 ` Logan Gunthorpe
2019-02-05 23:58 ` Jacob Pan
2019-01-31 18:56 ` [PATCH 2/9] PCI/MSI: Support allocating virtual MSI interrupts Logan Gunthorpe
2019-01-31 22:39 ` Bjorn Helgaas
2019-01-31 22:52 ` Logan Gunthorpe
2019-02-01 19:23 ` Bjorn Helgaas
2019-01-31 18:56 ` [PATCH 3/9] PCI/switchtec: Add module parameter to request more interrupts Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 4/9] NTB: Introduce functions to calculate multi-port resource index Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 5/9] NTB: Rename ntb.c to support multiple source files in the module Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 6/9] NTB: Introduce MSI library Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 7/9] NTB: Introduce NTB MSI Test Client Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 8/9] NTB: Add ntb_msi_test support to ntb_test Logan Gunthorpe
2019-01-31 18:56 ` [PATCH 9/9] NTB: Add MSI interrupt support to ntb_transport Logan Gunthorpe
2019-01-31 20:20 ` [PATCH 0/9] Support using MSI interrupts in ntb_transport Dave Jiang
2019-01-31 20:48 ` Logan Gunthorpe [this message]
[not found] ` <bafe9db4-6d5b-0453-d7e7-e49e9293dd01-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2019-01-31 20:58 ` Dave Jiang
[not found] ` <ea7b7c3c-8ed5-51ec-022a-7d28a5afce82-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2019-01-31 22:39 ` Logan Gunthorpe
[not found] ` <29f7e3fe-5354-6156-1243-7248ffb2249f-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
2019-01-31 22:46 ` Dave Jiang
2019-01-31 23:41 ` Logan Gunthorpe
2019-01-31 23:48 ` Dave Jiang
2019-01-31 23:52 ` Logan Gunthorpe
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