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From: Frederic Weisbecker <frederic@kernel.org>
To: Nitesh Narayan Lal <nitesh@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
	bhelgaas@google.com, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, linux-pci@vger.kernel.org,
	sassmann@redhat.com, jeffrey.t.kirsher@intel.com,
	jacob.e.keller@intel.com, jlelli@redhat.com, hch@infradead.org,
	mike.marciniszyn@intel.com, dennis.dalessandro@intel.com,
	thomas.lendacky@amd.com, jerinj@marvell.com,
	mathias.nyman@intel.com, jiri@nvidia.com
Subject: Re: [RFC][Patch v1 3/3] PCI: Limit pci_alloc_irq_vectors as per housekeeping CPUs
Date: Tue, 22 Sep 2020 23:08:10 +0200	[thread overview]
Message-ID: <20200922210809.GE5217@lenoir> (raw)
In-Reply-To: <75a398cd-2050-e298-d718-eb56d4910133@redhat.com>

On Tue, Sep 22, 2020 at 09:54:58AM -0400, Nitesh Narayan Lal wrote:
> >> If min_vecs > num_housekeeping, for example:
> >>
> >> /* PCI MSI/MSIx support */
> >> #define XGBE_MSI_BASE_COUNT     4
> >> #define XGBE_MSI_MIN_COUNT      (XGBE_MSI_BASE_COUNT + 1)
> >>
> >> Then the protection fails.
> > Right, I was ignoring that case.
> >
> >> How about reducing max_vecs down to min_vecs, if min_vecs >
> >> num_housekeeping ?
> > Yes, I think this makes sense.
> > I will wait a bit to see if anyone else has any other comment and will post
> > the next version then.
> >
> 
> Are there any other comments/concerns on this patch that I need to address in
> the next posting?

No objection from me, I don't know much about this area anyway.

> -- 
> Nitesh
> 




      reply	other threads:[~2020-09-22 21:08 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-09 15:08 [RFC] [PATCH v1 0/3] isolation: limit msix vectors based on housekeeping CPUs Nitesh Narayan Lal
2020-09-09 15:08 ` [RFC][Patch v1 1/3] sched/isolation: API to get num of hosekeeping CPUs Nitesh Narayan Lal
2020-09-17 18:18   ` Jesse Brandeburg
2020-09-17 18:43     ` Nitesh Narayan Lal
2020-09-17 20:11   ` Bjorn Helgaas
2020-09-17 21:48     ` Jacob Keller
2020-09-17 22:09     ` Nitesh Narayan Lal
2020-09-21 23:40   ` Frederic Weisbecker
2020-09-22  3:16     ` Nitesh Narayan Lal
2020-09-22 10:08       ` Frederic Weisbecker
2020-09-22 13:50         ` Nitesh Narayan Lal
2020-09-22 20:58           ` Frederic Weisbecker
2020-09-22 21:15             ` Nitesh Narayan Lal
2020-09-22 21:26             ` Andrew Lunn
2020-09-22 22:20               ` Nitesh Narayan Lal
2020-09-09 15:08 ` [RFC][Patch v1 2/3] i40e: limit msix vectors based on housekeeping CPUs Nitesh Narayan Lal
2020-09-11 15:23   ` Marcelo Tosatti
2020-09-17 18:23   ` Jesse Brandeburg
2020-09-17 18:31     ` Nitesh Narayan Lal
2020-09-21 22:58     ` Frederic Weisbecker
2020-09-22  3:08       ` Nitesh Narayan Lal
2020-09-22  9:54         ` Frederic Weisbecker
2020-09-22 13:34           ` Nitesh Narayan Lal
2020-09-22 20:44             ` Frederic Weisbecker
2020-09-22 21:05               ` Nitesh Narayan Lal
2020-09-09 15:08 ` [RFC][Patch v1 3/3] PCI: Limit pci_alloc_irq_vectors as per " Nitesh Narayan Lal
2020-09-10 19:22   ` Marcelo Tosatti
2020-09-10 19:31     ` Nitesh Narayan Lal
2020-09-22 13:54       ` Nitesh Narayan Lal
2020-09-22 21:08         ` Frederic Weisbecker [this message]

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