mirror of
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1d35aae78f
- Generate a list of built DTB files (arch/*/boot/dts/dtbs-list)
- Use more threads when building Debian packages in parallel
- Fix warnings shown during the RPM kernel package uninstallation
- Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to
Makefile
- Support GCC's -fmin-function-alignment flag
- Fix a null pointer dereference bug in modpost
- Add the DTB support to the RPM package
- Various fixes and cleanups in Kconfig
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Merge tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Generate a list of built DTB files (arch/*/boot/dts/dtbs-list)
- Use more threads when building Debian packages in parallel
- Fix warnings shown during the RPM kernel package uninstallation
- Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to
Makefile
- Support GCC's -fmin-function-alignment flag
- Fix a null pointer dereference bug in modpost
- Add the DTB support to the RPM package
- Various fixes and cleanups in Kconfig
* tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (67 commits)
kconfig: tests: test dependency after shuffling choices
kconfig: tests: add a test for randconfig with dependent choices
kconfig: tests: support KCONFIG_SEED for the randconfig runner
kbuild: rpm-pkg: add dtb files in kernel rpm
kconfig: remove unneeded menu_is_visible() call in conf_write_defconfig()
kconfig: check prompt for choice while parsing
kconfig: lxdialog: remove unused dialog colors
kconfig: lxdialog: fix button color for blackbg theme
modpost: fix null pointer dereference
kbuild: remove GCC's default -Wpacked-bitfield-compat flag
kbuild: unexport abs_srctree and abs_objtree
kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1
kconfig: remove named choice support
kconfig: use linked list in get_symbol_str() to iterate over menus
kconfig: link menus to a symbol
kbuild: fix inconsistent indentation in top Makefile
kbuild: Use -fmin-function-alignment when available
alpha: merge two entries for CONFIG_ALPHA_GAMMA
alpha: merge two entries for CONFIG_ALPHA_EV4
kbuild: change DTC_FLAGS_<basetarget>.o to take the path relative to $(obj)
...
101 lines
3.0 KiB
Plaintext
101 lines
3.0 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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# Intel IOMMU support
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config DMAR_TABLE
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bool
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config DMAR_PERF
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bool
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config DMAR_DEBUG
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bool
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config INTEL_IOMMU
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bool "Support for Intel IOMMU using DMA Remapping Devices"
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depends on PCI_MSI && ACPI && X86
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select DMA_OPS
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select IOMMU_API
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select IOMMU_IOVA
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select IOMMUFD_DRIVER if IOMMUFD
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select NEED_DMA_MAP_STATE
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select DMAR_TABLE
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select SWIOTLB
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select PCI_ATS
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select PCI_PRI
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select PCI_PASID
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help
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DMA remapping (DMAR) devices support enables independent address
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translations for Direct Memory Access (DMA) from devices.
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These DMA remapping devices are reported via ACPI tables
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and include PCI device scope covered by these DMA
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remapping devices.
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if INTEL_IOMMU
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config INTEL_IOMMU_DEBUGFS
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bool "Export Intel IOMMU internals in Debugfs"
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depends on IOMMU_DEBUGFS
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select DMAR_PERF
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select DMAR_DEBUG
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help
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!!!WARNING!!!
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DO NOT ENABLE THIS OPTION UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!!!
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Expose Intel IOMMU internals in Debugfs.
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This option is -NOT- intended for production environments, and should
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only be enabled for debugging Intel IOMMU.
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config INTEL_IOMMU_SVM
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bool "Support for Shared Virtual Memory with Intel IOMMU"
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depends on X86_64
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select MMU_NOTIFIER
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select IOMMU_SVA
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select IOMMU_IOPF
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help
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Shared Virtual Memory (SVM) provides a facility for devices
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to access DMA resources through process address space by
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means of a Process Address Space ID (PASID).
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config INTEL_IOMMU_DEFAULT_ON
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bool "Enable Intel DMA Remapping Devices by default"
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default y
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help
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Selecting this option will enable a DMAR device at boot time if
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one is found. If this option is not selected, DMAR support can
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be enabled by passing intel_iommu=on to the kernel.
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config INTEL_IOMMU_FLOPPY_WA
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def_bool y
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depends on X86
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help
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Floppy disk drivers are known to bypass DMA API calls
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thereby failing to work when IOMMU is enabled. This
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workaround will setup a 1:1 mapping for the first
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16MiB to make floppy (an ISA device) work.
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config INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
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bool "Enable Intel IOMMU scalable mode by default"
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default y
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help
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Selecting this option will enable by default the scalable mode if
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hardware presents the capability. The scalable mode is defined in
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VT-d 3.0. The scalable mode capability could be checked by reading
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/sys/devices/virtual/iommu/dmar*/intel-iommu/ecap. If this option
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is not selected, scalable mode support could also be enabled by
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passing intel_iommu=sm_on to the kernel. If not sure, please use
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the default value.
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config INTEL_IOMMU_PERF_EVENTS
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bool "Intel IOMMU performance events"
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default y
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depends on INTEL_IOMMU && PERF_EVENTS
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help
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Selecting this option will enable the performance monitoring
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infrastructure in the Intel IOMMU. It collects information about
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key events occurring during operation of the remapping hardware,
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to aid performance tuning and debug. These are available on modern
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processors which support Intel VT-d 4.0 and later.
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endif # INTEL_IOMMU
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