linux-kernel - [PATCH v2 0/4] iommu/iova: Add CPU hotplug handler to flush rcaches to core code

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Date:   Thu, 25 Mar 2021 20:29:57 +0800
From:   John Garry <john.garry@...wei.com>
To:     <joro@...tes.org>, <will@...nel.org>, <dwmw2@...radead.org>,
        <baolu.lu@...ux.intel.com>, <robin.murphy@....com>
CC:     <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, John Garry <john.garry@...wei.com>
Subject: [PATCH v2 0/4] iommu/iova: Add CPU hotplug handler to flush rcaches to core code

The Intel IOMMU driver supports flushing the per-CPU rcaches when a CPU is
offlined.

Let's move it to core code, so everyone can take advantage.

Also throw in a patch to stop exporting free_iova_fast().

Differences to v1:
- Add RB tags (thanks!)
- Add patch to stop exporting free_iova_fast()
- Drop patch to correct comment
- Add patch to delete iommu_dma_free_cpu_cached_iovas() and associated
  changes

John Garry (4):
  iova: Add CPU hotplug handler to flush rcaches
  iommu/vt-d: Remove IOVA domain rcache flushing for CPU offlining
  iommu: Delete iommu_dma_free_cpu_cached_iovas()
  iommu: Stop exporting free_iova_fast()

 drivers/iommu/dma-iommu.c   |  9 ---------
 drivers/iommu/intel/iommu.c | 31 -------------------------------
 drivers/iommu/iova.c        | 34 +++++++++++++++++++++++++++++++---
 include/linux/cpuhotplug.h  |  2 +-
 include/linux/dma-iommu.h   |  8 --------
 include/linux/iova.h        |  6 +-----
 6 files changed, 33 insertions(+), 57 deletions(-)

-- 
2.26.2