linux-sg2042/include
Jacob Pan 808be0aae5 iommu: Introduce guest PASID bind function
Guest shared virtual address (SVA) may require host to shadow guest
PASID tables. Guest PASID can also be allocated from the host via
enlightened interfaces. In this case, guest needs to bind the guest
mm, i.e. cr3 in guest physical address to the actual PASID table in
the host IOMMU. Nesting will be turned on such that guest virtual
address can go through a two level translation:
- 1st level translates GVA to GPA
- 2nd level translates GPA to HPA
This patch introduces APIs to bind guest PASID data to the assigned
device entry in the physical IOMMU. See the diagram below for usage
explanation.

    .-------------.  .---------------------------.
    |   vIOMMU    |  | Guest process mm, FL only |
    |             |  '---------------------------'
    .----------------/
    | PASID Entry |--- PASID cache flush -
    '-------------'                       |
    |             |                       V
    |             |                      GP
    '-------------'
Guest
------| Shadow |----------------------- GP->HP* ---------
      v        v                          |
Host                                      v
    .-------------.  .----------------------.
    |   pIOMMU    |  | Bind FL for GVA-GPA  |
    |             |  '----------------------'
    .----------------/  |
    | PASID Entry |     V (Nested xlate)
    '----------------\.---------------------.
    |             |   |Set SL to GPA-HPA    |
    |             |   '---------------------'
    '-------------'

Where:
 - FL = First level/stage one page tables
 - SL = Second level/stage two page tables
 - GP = Guest PASID
 - HP = Host PASID
* Conversion needed if non-identity GP-HP mapping option is chosen.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-10-15 13:34:43 +02:00
..
acpi ACPI updates for 5.4-rc1 2019-09-17 19:31:36 -07:00
asm-generic Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
clocksource clocksource/drivers/hyperv: Enable TSC page clocksource on 32bit 2019-08-23 16:59:54 +02:00
crypto Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity 2019-09-27 19:37:27 -07:00
drm drm: Measure Self Refresh Entry/Exit times to avoid thrashing 2019-09-19 10:03:32 -04:00
dt-bindings Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
keys
kvm KVM: arm/arm64: vgic: Use a single IO device per redistributor 2019-08-25 11:02:52 +01:00
linux iommu: Introduce guest PASID bind function 2019-10-15 13:34:43 +02:00
math-emu nds32: Mark expected switch fall-throughs 2019-08-29 11:06:56 -05:00
media media: v4l2-core: introduce a helper to unregister a i2c subdev 2019-08-26 10:52:06 -03:00
misc
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2019-09-27 20:15:00 +02:00
pcmcia
ras
rdma RDMA subsystem updates for 5.4 2019-09-21 10:26:24 -07:00
scsi SCSI misc on 20190919 2019-09-21 10:50:15 -07:00
soc Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
sound ASoC: Updates for v5.4 2019-09-10 13:03:08 +02:00
target
trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-10-05 08:50:15 -07:00
uapi iommu: Introduce guest PASID bind function 2019-10-15 13:34:43 +02:00
vdso
video fbdev: da8xx: remove panel_power_ctrl() callback from platform data 2019-08-26 17:53:58 +05:30
xen xen: fixes and cleanups for 5.4-rc2 2019-10-04 11:13:09 -07:00
Kbuild - New Drivers 2019-09-23 19:37:49 -07:00