Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()

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Subject: Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Tue, 20 Sep 2022 11:09:44 -0300
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "Chatre, Reinette" <reinette.chatre@xxxxxxxxx>, "Jiang, Dave" <dave.jiang@xxxxxxxxx>, Logan Gunthorpe <logang@xxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Bjorn Helgaas <helgaas@xxxxxxxxxx>, Marc Zygnier <maz@xxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, "Dey, Megha" <megha.dey@xxxxxxxxx>, "Raj, Ashok" <ashok.raj@xxxxxxxxx>, "linux-pci@xxxxxxxxxxxxxxx" <linux-pci@xxxxxxxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Jon Mason <jdmason@xxxxxxxx>, Allen Hubbe <allenbh@xxxxxxxxx>, "linux-ntb@xxxxxxxxxxxxxxxx" <linux-ntb@xxxxxxxxxxxxxxxx>, "linux-s390@xxxxxxxxxxxxxxx" <linux-s390@xxxxxxxxxxxxxxx>, Heiko Carstens <hca@xxxxxxxxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, "Rodel, Jorg" <jroedel@xxxxxxx>, "iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx" <iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx>
In-reply-to: <BN9PR11MB5276961D838169BF237928E18C499@BN9PR11MB5276.namprd11.prod.outlook.com>
References: <8735n1zaz3.ffs@tglx> <87sfv1xq3b.ffs@tglx> <BN9PR11MB527619B099061B3814EB40408C719@BN9PR11MB5276.namprd11.prod.outlook.com> <20211210123938.GF6385@nvidia.com> <87fsr0xp31.ffs@tglx> <BN9PR11MB527625E8A9BB854F3C0D19AE8C729@BN9PR11MB5276.namprd11.prod.outlook.com> <875yrvwavf.ffs@tglx> <BL1PR11MB5271326D39DAB692F07587768C739@BL1PR11MB5271.namprd11.prod.outlook.com> <87fsqxv8zf.ffs@tglx> <BN9PR11MB5276961D838169BF237928E18C499@BN9PR11MB5276.namprd11.prod.outlook.com>

On Thu, Sep 15, 2022 at 09:24:07AM +0000, Tian, Kevin wrote:

> After migration the IRTE index could change hence the addr/data pair
> acquired before migration becomes stale and must be fixed.

The migration has to keep this stuff stable somehow, it seems
infeasible to fix it after the fact.

Jason

Follow-Ups:
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Tian, Kevin

References:
- Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Thomas Gleixner
- Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Thomas Gleixner
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Tian, Kevin
- Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Jason Gunthorpe
- Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Thomas Gleixner
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Tian, Kevin
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Thomas Gleixner
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Tian, Kevin
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Thomas Gleixner
- RE: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()
  - From: Tian, Kevin

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