Commit bed0653f authored Oct 03, 2025 by Linus Torvalds

linux

Pull iommu updates from Joerg Roedel:

 - Inte VT-d:
    - IOMMU driver updated to the latest VT-d specification
    - Don't enable PRS if PDS isn't supported
    - Replace snprintf with scnprintf
    - Fix legacy mode page table dump through debugfs
    - Miscellaneous cleanups

 - AMD-Vi:
     - Support kdump boot when SNP is enabled

 - Apple-DART:
     - 4-level page-table support

 - RISC-V IOMMU:
     - ACPI support

 - Small number of miscellaneous cleanups and fixes

* tag 'iommu-updates-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (22 commits)
  iommu/vt-d: Disallow dirty tracking if incoherent page walk
  iommu/vt-d: debugfs: Avoid dumping context command register
  iommu/vt-d: Removal of Advanced Fault Logging
  iommu/vt-d: PRS isn't usable if PDS isn't supported
  iommu/vt-d: Remove LPIG from page group response descriptor
  iommu/vt-d: Drop unused cap_super_offset()
  iommu/vt-d: debugfs: Fix legacy mode page table dump logic
  iommu/vt-d: Replace snprintf with scnprintf in dmar_latency_snapshot()
  iommu/io-pgtable-dart: Fix off by one error in table index check
  iommu/riscv: Add ACPI support
  ACPI: scan: Add support for RISC-V in acpi_iommu_configure_id()
  ACPI: RISC-V: Add support for RIMT
  iommu/omap: Use int type to store negative error codes
  iommu/apple-dart: Clear stream error indicator bits for T8110 DARTs
  iommu/amd: Skip enabling command/event buffers for kdump
  crypto: ccp: Skip SEV and SNP INIT for kdump boot
  iommu/amd: Reuse device table for kdump
  iommu/amd: Add support to remap/unmap IOMMU buffers for kdump
  iommu/apple-dart: Add 4-level page table support
  iommu/io-pgtable-dart: Add 4-level page table support
  ...

parents a498d59c 5f4b8c03

MAINTAINERS

+1 −0

Original line number	Diff line number	Diff line
		@@ -347,6 +347,7 @@ L: linux-acpi@vger.kernel.org
		L: linux-riscv@lists.infradead.org
		S: Maintained
		F: drivers/acpi/riscv/
		F: include/linux/acpi_rimt.h

		ACPI PCC(Platform Communication Channel) MAILBOX DRIVER
		M: Sudeep Holla <sudeep.holla@arm.com>

arch/riscv/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@ config RISCV
		select ACPI_MCFG if (ACPI && PCI)
		select ACPI_PPTT if ACPI
		select ACPI_REDUCED_HARDWARE_ONLY if ACPI
		select ACPI_RIMT if ACPI
		select ACPI_SPCR_TABLE if ACPI
		select ARCH_DMA_DEFAULT_COHERENT
		select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION

drivers/acpi/Kconfig

+4 −0

Original line number	Diff line number	Diff line
		@@ -547,6 +547,10 @@ if ARM64
		source "drivers/acpi/arm64/Kconfig"
		endif

		if RISCV
		source "drivers/acpi/riscv/Kconfig"
		endif

		config ACPI_PPTT
		bool

drivers/acpi/riscv/Kconfig

0 → 100644

+7 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-only
		#
		# ACPI Configuration for RISC-V
		#

		config ACPI_RIMT
		bool

drivers/acpi/riscv/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -2,3 +2,4 @@
		obj-y += rhct.o init.o irq.o
		obj-$(CONFIG_ACPI_PROCESSOR_IDLE) += cpuidle.o
		obj-$(CONFIG_ACPI_CPPC_LIB) += cppc.o
		obj-$(CONFIG_ACPI_RIMT) += rimt.o