Pull IOMMU fixes from Joerg Roedel:

 - another compile-fix for my header cleanup

 - a couple of fixes for the recently merged IOMMU probe deferal code

 - fixes for ACPI/IORT code necessary with IOMMU probe deferal

* tag 'iommu-fixes-v4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  arm: dma-mapping: Reset the device's dma_ops
  ACPI/IORT: Move the check to get iommu_ops from translated fwspec
  ARM: dma-mapping: Don't tear down third-party mappings
  ACPI/IORT: Ignore all errors except EPROBE_DEFER
  iommu/of: Ignore all errors except EPROBE_DEFER
  iommu/of: Fix check for returning EPROBE_DEFER
  iommu/dma: Fix function declaration

Pull ARM fixes from Russell King:
 "Three fixes this time around:

   - Two fixes for noMMU, fixing the decompressor header layout, and
     preventing a build error with some configurations.

   - Fixing the hyp-stub updates that went in during the merge window
     for platforms that use MCPM"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8677/1: boot/compressed: fix decompressor header layout for v7-M
  ARM: 8676/1: NOMMU: provide pgprot_device() macro
  ARM: 8675/1: MCPM: ensure not to enter __hyp_soft_restart from loopback and cpu_power_down

NOMMU build leads to the following error:

  CC      drivers/pci/mmap.o
drivers/pci/mmap.c: In function 'pci_mmap_resource_range':
drivers/pci/mmap.c:60:3: error: implicit declaration of function 'pgprot_device' [-Werror=implicit-function-declaration]
   vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
   ^

cc1: some warnings being treated as errors
scripts/Makefile.build:302: recipe for target 'drivers/pci/mmap.o' failed
make[2]: *** [drivers/pci/mmap.o] Error 1
scripts/Makefile.build:561: recipe for target 'drivers/pci' failed
make[1]: *** [drivers/pci] Error 2
Makefile:1016: recipe for target 'drivers' failed
make: *** [drivers] Error 2

Fix it with support of pgprot_device() macro for NOMMU.

Fixes: 00d2904ffeac ("ARM/PCI: Use generic pci_mmap_resource_range()")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

arch_setup_dma_ops() is used in device probe code paths to create an
IOMMU mapping and attach it to the device. The function assumes that the
device is attached to a device-specific IOMMU instance (or at least a
device-specific TLB in a shared IOMMU instance) and thus creates a
separate mapping for every device.

On several systems (Renesas R-Car Gen2 being one of them), that
assumption is not true, and IOMMU mappings must be shared between
multiple devices. In those cases the IOMMU driver knows better than the
generic ARM dma-mapping layer and attaches mapping to devices manually
with arm_iommu_attach_device(), which sets the DMA ops for the device.

The arch_setup_dma_ops() function takes this into account and bails out
immediately if the device already has DMA ops assigned. However, the
corresponding arch_teardown_dma_ops() function, called from driver
unbind code paths (including probe deferral), will tear the mapping down
regardless of who created it. When the device is reprobed
arch_setup_dma_ops() will be called again but won't perform any
operation as the DMA ops will still be set.

We need to reset the DMA ops in arch_teardown_dma_ops() to fix this.
However, we can't do so unconditionally, as then a new mapping would be
created by arch_setup_dma_ops() when the device is reprobed, regardless
of whether the device needs to share a mapping or not. We must thus keep
track of whether arch_setup_dma_ops() created the mapping, and only in
that case tear it down in arch_teardown_dma_ops().

Keep track of that information in the dev_archdata structure. As the
structure is embedded in all instances of struct device let's not grow
it, but turn the existing dma_coherent bool field into a bitfield that
can be used for other purposes.

Fixes: 09515ef5ddad ("of/acpi: Configure dma operations at probe time for platform/amba/pci bus devices")
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Hardware debugging in guests is not intercepted currently, it means
that a malicious guest can bring down the entire machine by writing
to the debug registers.

This patch enable trapping of all debug registers, preventing the
guests to access the debug registers. This includes access to the
debug mode(DBGDSCR) in the guest world all the time which could
otherwise mess with the host state. Reads return 0 and writes are
ignored (RAZ_WI).

The result is the guest cannot detect any working hardware based debug
support. As debug exceptions are still routed to the guest normal
debug using software based breakpoints still works.

To support debugging using hardware registers we need to implement a
debug register aware world switch as well as special trapping for
registers that may affect the host state.

Cc: stable@vger.kernel.org
Signed-off-by: Zhichao Huang <zhichao.huang@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>

Pull Kbuild UAPI updates from Masahiro Yamada:
 "Improvement of headers_install by Nicolas Dichtel.

  It has been long since the introduction of uapi directories, but the
  de-coupling of exported headers has not been completed. Headers listed
  in header-y are exported whether they exist in uapi directories or
  not. His work fixes this inconsistency.

  All (and only) headers under uapi directories are now exported. The
  asm-generic wrappers are still exceptions, but this is a big step
  forward"

* tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  arch/include: remove empty Kbuild files
  uapi: export all arch specifics directories
  uapi: export all headers under uapi directories
  smc_diag.h: fix include from userland
  btrfs_tree.h: fix include from userland
  uapi: includes linux/types.h before exporting files
  Makefile.headersinst: remove destination-y option
  Makefile.headersinst: cleanup input files
  x86: stop exporting msr-index.h to userland
  nios2: put setup.h in uapi
  h8300: put bitsperlong.h in uapi

Pull more KVM updates from Paolo Bonzini:
 "ARM:
   - bugfixes
   - moved shared 32-bit/64-bit files to virt/kvm/arm
   - support for saving/restoring virtual ITS state to userspace

  PPC:
   - XIVE (eXternal Interrupt Virtualization Engine) support

  x86:
   - nVMX improvements, including emulated page modification logging
     (PML) which brings nice performance improvements on some workloads"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (45 commits)
  KVM: arm/arm64: vgic-its: Cleanup after failed ITT restore
  KVM: arm/arm64: Don't call map_resources when restoring ITS tables
  KVM: arm/arm64: Register ITS iodev when setting base address
  KVM: arm/arm64: Get rid of its->initialized field
  KVM: arm/arm64: Register iodevs when setting redist base and creating VCPUs
  KVM: arm/arm64: Slightly rework kvm_vgic_addr
  KVM: arm/arm64: Make vgic_v3_check_base more broadly usable
  KVM: arm/arm64: Refactor vgic_register_redist_iodevs
  KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus
  nVMX: Advertise PML to L1 hypervisor
  nVMX: Implement emulated Page Modification Logging
  kvm: x86: Add a hook for arch specific dirty logging emulation
  kvm: nVMX: Validate CR3 target count on nested VM-entry
  KVM: set no_llseek in stat_fops_per_vm
  KVM: arm/arm64: vgic: Rename kvm_vgic_vcpu_init to kvm_vgic_vcpu_enable
  KVM: arm/arm64: Clarification and relaxation to ITS save/restore ABI
  KVM: arm64: vgic-v3: KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES
  KVM: arm64: vgic-its: Fix pending table sync
  KVM: arm64: vgic-its: ITT save and restore
  KVM: arm64: vgic-its: Device table save/restore
  ...

Regularly, when a new header is created in include/uapi/, the developer
forgets to add it in the corresponding Kbuild file. This error is usually
detected after the release is out.

In fact, all headers under uapi directories should be exported, thus it's
useless to have an exhaustive list.

After this patch, the following files, which were not exported, are now
exported (with make headers_install_all):
asm-arc/kvm_para.h
asm-arc/ucontext.h
asm-blackfin/shmparam.h
asm-blackfin/ucontext.h
asm-c6x/shmparam.h
asm-c6x/ucontext.h
asm-cris/kvm_para.h
asm-h8300/shmparam.h
asm-h8300/ucontext.h
asm-hexagon/shmparam.h
asm-m32r/kvm_para.h
asm-m68k/kvm_para.h
asm-m68k/shmparam.h
asm-metag/kvm_para.h
asm-metag/shmparam.h
asm-metag/ucontext.h
asm-mips/hwcap.h
asm-mips/reg.h
asm-mips/ucontext.h
asm-nios2/kvm_para.h
asm-nios2/ucontext.h
asm-openrisc/shmparam.h
asm-parisc/kvm_para.h
asm-powerpc/perf_regs.h
asm-sh/kvm_para.h
asm-sh/ucontext.h
asm-tile/shmparam.h
asm-unicore32/shmparam.h
asm-unicore32/ucontext.h
asm-x86/hwcap2.h
asm-xtensa/kvm_para.h
drm/armada_drm.h
drm/etnaviv_drm.h
drm/vgem_drm.h
linux/aspeed-lpc-ctrl.h
linux/auto_dev-ioctl.h
linux/bcache.h
linux/btrfs_tree.h
linux/can/vxcan.h
linux/cifs/cifs_mount.h
linux/coresight-stm.h
linux/cryptouser.h
linux/fsmap.h
linux/genwqe/genwqe_card.h
linux/hash_info.h
linux/kcm.h
linux/kcov.h
linux/kfd_ioctl.h
linux/lightnvm.h
linux/module.h
linux/nbd-netlink.h
linux/nilfs2_api.h
linux/nilfs2_ondisk.h
linux/nsfs.h
linux/pr.h
linux/qrtr.h
linux/rpmsg.h
linux/sched/types.h
linux/sed-opal.h
linux/smc.h
linux/smc_diag.h
linux/stm.h
linux/switchtec_ioctl.h
linux/vfio_ccw.h
linux/wil6210_uapi.h
rdma/bnxt_re-abi.h

Note that I have removed from this list the files which are generated in every
exported directories (like .install or .install.cmd).

Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all
subdirs with a pure makefile command.

For the record, note that exported files for asm directories are a mix of
files listed by:
 - include/uapi/asm-generic/Kbuild.asm;
 - arch/<arch>/include/uapi/asm/Kbuild;
 - arch/<arch>/include/asm/Kbuild.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Mark Salter <msalter@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Pull ARM SoC driver updates from Olof Johansson:
 "Driver updates for ARM SoCs:

  Reset subsystem, merged through arm-soc by tradition:
   - Make bool drivers explicitly non-modular
   - New support for i.MX7 and Arria10 reset controllers

  PATA driver for Palmchip BK371 (acked by Tejun)

  Power domain drivers for i.MX (GPC, GPCv2)
   - Moved out of mach-imx for GPC
   - Bunch of tweaks, fixes, etc

  PMC support for Tegra186

  SoC detection support for Renesas RZ/G1H and RZ/G1N

  Move Tegra flow controller driver from mach directory to drivers/soc
   - (Power management / CPU power driver)

  Misc smaller tweaks for other platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
  soc: pm-domain: Fix the mangled urls
  soc: renesas: rcar-sysc: Add support for R-Car H3 ES2.0
  soc: renesas: rcar-sysc: Add support for fixing up power area tables
  soc: renesas: Register SoC device early
  soc: imx: gpc: add workaround for i.MX6QP to the GPC PD driver
  dt-bindings: imx-gpc: add i.MX6 QuadPlus compatible
  soc: imx: gpc: add defines for domain index
  soc: imx: Add GPCv2 power gating driver
  dt-bindings: Add GPCv2 power gating driver
  ARM/clk: move the ICST library to drivers/clk
  ARM: plat-versatile: remove stale clock header
  ARM: keystone: Drop PM domain support for k2g
  soc: ti: Add ti_sci_pm_domains driver
  dt-bindings: Add TI SCI PM Domains
  PM / Domains: Do not check if simple providers have phandle cells
  PM / Domains: Add generic data pointer to genpd data struct
  soc/tegra: Add initial flowctrl support for Tegra132/210
  soc/tegra: flowctrl: Add basic platform driver
  soc/tegra: Move Tegra flowctrl driver
  ARM: tegra: Remove unnecessary inclusion of flowctrl header
  ...

Pull ARM SoC platform updates from Olof Johansson:
 "SoC platform changes (arch/arm/mach-*). This merge window, the bulk is
  for a few platforms:

  Gemini:
   - Legacy platform that Linus Walleij has converted to multiplatform
     and DT, so a handful of various tweaks there, removal of some old
     stale support, etc.

  Atmel AT91:
   - Fixup of various power management related pieces
   - Move of SoC detection to a drivers/soc driver instead

  ST Micro STM32:
   - New SoC support: STM32H743

  TI platforms:
   - More driver support for Davinci (SATA in particular)
   - Removal of some old stale hwmod files (linkspace platform)

  Misc:
   - A couple of smaller patches for i.MX, sunxi, hisi"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (57 commits)
  ARM: davinci: Add clock for CPPI 4.1 DMA engine
  ARM: mxs: add support for I2SE Duckbill 2 boards
  MAINTAINERS: Update the Allwinner sunXi entry
  ARM: i.MX25: globally disable supervisor protect
  ARM: at91: move SoC detection to its own driver
  ARM: at91: pm: correct typo
  ARM: at91: pm: Remove at91_pm_set_standby
  ARM: at91: pm: Merge all at91sam9*_pm_init
  ARM: at91: pm: Tie the USB clock mask to the pmc
  ARM: at91: pm: Tie the memory controller type to the ramc id
  ARM: at91: pm: Workaround DDRSDRC self-refresh bug with LPDDR1 memories.
  ARM: at91: pm: Simplify at91rm9200_standby
  ARM: at91: pm: Use struct at91_pm_data in pm_suspend.S
  ARM: at91: pm: Move global variables into at91_pm_data
  ARM: at91: pm: Move at91_ramc_read/write to pm.c
  ARM: at91: pm: Cleanup headers
  MAINTAINERS: Add memory drivers to AT91 entry
  MAINTAINERS: Update AT91 entry
  ARM: davinci: add pata_bk3710 libata driver support
  ARM: OMAP2+: mark omap_init_rng as __init
  ...