This prepares existing upstream kernel for DDW (Dynamic DMA windows) and
adds actual DDW support for VFIO.
This patchset does not contain any in-kernel acceleration stuff.
This patchset does not enable DDW for emulated devices.
Changes:
v4:
* addressed Ben's comments
* big rework with moving tce_xxx callbacks out of ppc_md
v3:
* applied multiple comments from Gavin regarding error checking
and callbacks placements
v2:
* moved "Account TCE pages in locked_vm" here (was in later series)
* added counting for huge window to locked_vm (ugly but better than nothing)
* fixed bug with missing >>PAGE_SHIFT when calling pfn_to_page
Alexey Kardashevskiy (16):
rcu: Define notrace version of list_for_each_entry_rcu and
list_entry_rcu
KVM: PPC: Use RCU for arch.spapr_tce_tables
mm: Add helpers for locked_vm
KVM: PPC: Account TCE-containing pages in locked_vm
powerpc/iommu: Fix comments with it_page_shift
powerpc/powernv: Make invalidate() a callback
powerpc/spapr: vfio: Implement spapr_tce_iommu_ops
powerpc/powernv: Convert/move set_bypass() callback to
take_ownership()
powerpc/iommu: Fix IOMMU ownership control functions
powerpc: Move tce_xxx callbacks from ppc_md to iommu_table
powerpc/powernv: Release replaced TCE
powerpc/pseries/lpar: Enable VFIO
powerpc/powernv: Implement Dynamic DMA windows (DDW) for IODA
vfio: powerpc/spapr: Reuse locked_vm accounting helpers
vfio: powerpc/spapr: Use it_page_size
vfio: powerpc/spapr: Enable Dynamic DMA windows
arch/powerpc/include/asm/iommu.h | 33 ++-
arch/powerpc/include/asm/kvm_host.h | 1 +
arch/powerpc/include/asm/machdep.h | 25 --
arch/powerpc/include/asm/tce.h | 38 +++
arch/powerpc/kernel/iommu.c | 158 ++++++++-----
arch/powerpc/kernel/vio.c | 5 +-
arch/powerpc/kvm/book3s.c | 2 +-
arch/powerpc/kvm/book3s_64_vio.c | 43 +++-
arch/powerpc/kvm/book3s_64_vio_hv.c | 6 +-
arch/powerpc/platforms/cell/iommu.c | 9 +-
arch/powerpc/platforms/pasemi/iommu.c | 8 +-
arch/powerpc/platforms/powernv/pci-ioda.c | 239 ++++++++++++++++---
arch/powerpc/platforms/powernv/pci-p5ioc2.c | 4 +-
arch/powerpc/platforms/powernv/pci.c | 86 ++++---
arch/powerpc/platforms/powernv/pci.h | 16 +-
arch/powerpc/platforms/pseries/iommu.c | 77 ++++--
arch/powerpc/sysdev/dart_iommu.c | 13 +-
drivers/vfio/vfio_iommu_spapr_tce.c | 348 ++++++++++++++++++++++++----
include/linux/mm.h | 3 +
include/linux/rculist.h | 38 +++
include/uapi/linux/vfio.h | 37 ++-
mm/mlock.c | 49 ++++
22 files changed, 990 insertions(+), 248 deletions(-)
--
2.0.0
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