Merge branch kvm-arm64/lpi-xa-cache into kvmarm-master/next

* kvm-arm64/lpi-xa-cache:
  : .
  : New and improved LPI translation cache from Oliver Upton.
  :
  : From the cover letter:
  :
  : "As discussed [*], here is the new take on the LPI translation cache,
  : migrating to an xarray indexed by (devid, eventid) per ITS.
  :
  : The end result is quite satisfying, as it becomes possible to rip out
  : other nasties such as the lpi_list_lock. To that end, patches 2-6 aren't
  : _directly_ related to the translation cache cleanup, but instead are
  : done to enable the cleanups at the end of the series.
  :
  : I changed out my test machine from the last time so the baseline has
  : moved a bit, but here are the results from the vgic_lpi_stress test:
  :
  : +----------------------------+------------+-------------------+
  : |       Configuration        |  v6.8-rc1  | v6.8-rc1 + series |
  : +----------------------------+------------+-------------------+
  : | -v 1 -d 1 -e 1 -i 1000000  | 2063296.81 |        1362602.35 |
  : | -v 16 -d 16 -e 16 -i 10000 |  610678.33 |        5200910.01 |
  : | -v 16 -d 16 -e 17 -i 10000 |  678361.53 |        5890675.51 |
  : | -v 32 -d 32 -e 1 -i 100000 |  580918.96 |        8304552.67 |
  : | -v 1 -d 1 -e 17 -i 1000    | 1512443.94 |         1425953.8 |
  : +----------------------------+------------+-------------------+
  :
  : Unlike last time, no dramatic regressions at any performance point. The
  : regression on a single interrupt stream is to be expected, as the
  : overheads of SRCU and two tree traversals (kvm_io_bus_get_dev(),
  : translation cache xarray) are likely greater than that of a linked-list
  : with a single node."
  : .
  KVM: selftests: Add stress test for LPI injection
  KVM: selftests: Use MPIDR_HWID_BITMASK from cputype.h
  KVM: selftests: Add helper for enabling LPIs on a redistributor
  KVM: selftests: Add a minimal library for interacting with an ITS
  KVM: selftests: Add quadword MMIO accessors
  KVM: selftests: Standardise layout of GIC frames
  KVM: selftests: Align with kernel's GIC definitions
  KVM: arm64: vgic-its: Get rid of the lpi_list_lock
  KVM: arm64: vgic-its: Rip out the global translation cache
  KVM: arm64: vgic-its: Use the per-ITS translation cache for injection
  KVM: arm64: vgic-its: Spin off helper for finding ITS by doorbell addr
  KVM: arm64: vgic-its: Maintain a translation cache per ITS
  KVM: arm64: vgic-its: Scope translation cache invalidations to an ITS
  KVM: arm64: vgic-its: Get rid of vgic_copy_lpi_list()
  KVM: arm64: vgic-debug: Use an xarray mark for debug iterator
  KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_cmd_handle_movall()
  KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_invall()
  KVM: arm64: vgic-its: Walk LPI xarray in its_sync_lpi_pending_table()
  KVM: Treat the device list as an rculist

Signed-off-by: Marc Zyngier <maz@kernel.org>

0 files changed, 0 insertions, 0 deletions