Changes in Kconfig

9b400d17 - kbuild: Introduce Kconfig symbol for linking vmlinux with relocations

Tue, 11 Mar 2025 11:06:19 +0000

kbuild: Introduce Kconfig symbol for linking vmlinux with relocationsSome architectures build vmlinux with static relocations preserved, butstrip them again from the final vmlinux image. Arch specific toolsconsume these static relocations in order to construct relocation tablesfor KASLR.The fact that vmlinux is created, consumed and subsequently updated goesagainst the typical, declarative paradigm used by Make, which is basedon rules and dependencies. So as a first step towards cleaning this up,introduce a Kconfig symbol to declare that the arch wants to consume thestatic relocations emitted into vmlinux. This will be wired up furtherin subsequent patches.Signed-off-by: Ard Biesheuvel Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/mips/Kconfig

976bf3ae - mips: drop GENERIC_IOMAP wrapper

Tue, 11 Mar 2025 10:48:49 +0000

mips: drop GENERIC_IOMAP wrapperAll PIO on MIPS platforms is memory mapped, so there is no benefit inthe lib/iomap.c wrappers that switch between inb/outb and readb/writebstyle accessses.In fact, the '#define PIO_RESERVED 0' setting completely disablesthe GENERIC_IOMAP functionality, and the '#define PIO_OFFSETmips_io_port_base' setting is based on a misunderstanding of what theoffset is meant to do.MIPS started using GENERIC_IOMAP in 2018 with commit b962aeb02205 ("MIPS:Use GENERIC_IOMAP") replacing a simple custom implementation of the sameinterfaces, but at the time the asm-generic/io.h version was not usableyet. Since the header is now always included, it's now possible to goback to the even simpler version.Use the normal GENERIC_PCI_IOMAP functionality for all mips platformswithout the hacky GENERIC_IOMAP, and provide a custom pci_iounmap()for the CONFIG_PCI_DRIVERS_LEGACY case to ensure the I/O port base nevergets unmapped.The readsl() prototype needs an extra 'const' keyword to make itcompatible with the generic ioread32_rep() alias.Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/mips/Kconfig

69896119 - MIPS: vdso: Switch to generic storage implementation

Tue, 04 Feb 2025 12:05:45 +0000

MIPS: vdso: Switch to generic storage implementationThe generic storage implementation provides the same features as thecustom one. However it can be shared between architectures, makingmaintenance easier.Co-developed-by: Nam Cao Signed-off-by: Nam Cao Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-13-13a4669dfc8c@linutronix.de List of files: /linux-6.15/arch/mips/Kconfig

04e4ec98 - MIPS: migrate to generic rule for built-in DTBs

Sun, 22 Dec 2024 00:04:13 +0000

MIPS: migrate to generic rule for built-in DTBsCommit 654102df2ac2 ("kbuild: add generic support for built-in bootDTBs") introduced generic support for built-in DTBs.Select GENERIC_BUILTIN_DTB and BUILTIN_DTB_ALL when the built-in DTBsupport is enabled.DTBs compiled under arch/mips/boot/dts/ will be wrapped by the genericrule in scripts/Makefile.vmlinux.Signed-off-by: Masahiro Yamada Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

078b8316 - Revert "MIPS: csrc-r4k: Select HAVE_UNSTABLE_SCHED_CLOCK if SMP && 64BIT"

Mon, 23 Dec 2024 09:20:41 +0000

Revert "MIPS: csrc-r4k: Select HAVE_UNSTABLE_SCHED_CLOCK if SMP && 64BIT"This reverts commit 426fa8e4fe7bb914b5977cbce453a9926bf5b2e6.The commit has caused two issues on Loongson 3A4000:1. The timestamp in dmesg become erratic, like: [3.736957] amdgpu 0000:04:00.0: ... ... [3.748895] [drm] Initialized amdgpu ... ... [18446744073.381141] amdgpu 0000:04:00:0: ... ... [1.613326] igb 0000:03:00.0 enp3s0: ... ...2. More seriously, some workloads (for example, the test stdlib/test-cxa_atexit2 in the Glibc test suite) triggers an RCU stall and hang the system with a high probably (4 hangs out of 5 tests).Revert this commit to use jiffie on Loongson MIPS systems and fix theseissues for now. The root cause may need more investigation.Cc: stable@vger.kernel.org # 6.11+Cc: Jiaxun Yang Cc: Icenowy Zheng Signed-off-by: Xi Ruoyao Reviewed-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

289c270e - mips/crc32: expose CRC32 functions through lib

Mon, 02 Dec 2024 01:08:32 +0000

mips/crc32: expose CRC32 functions through libMove the mips CRC32 assembly code into the lib directory and wire it upto the library interface. This allows it to be used without goingthrough the crypto API. It remains usable via the crypto API too viathe shash algorithms that use the library interface. Thus all thearch-specific "shash" code becomes unnecessary and is removed.Note: to see the diff from arch/mips/crypto/crc32-mips.c toarch/mips/lib/crc32-mips.c, view this commit with 'git show -M10'.Reviewed-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20241202010844.144356-8-ebiggers@kernel.orgSigned-off-by: Eric Biggers List of files: /linux-6.15/arch/mips/Kconfig

31daa343 - crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32

Tue, 17 Sep 2024 16:37:20 +0000

crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32Fixes boot failures on 6.9 on PPC_BOOK3S_32 machines using Open Firmware. On these machines, the kernel refuses to boot from non-zeroPHYSICAL_START, which occurs when CRASH_DUMP is on.Since most PPC_BOOK3S_32 machines boot via Open Firmware, it shoulddefault to off for them. Users booting via some other mechanism can stillturn it on explicitly.Does not change the default on any other architectures for thetime being.Link: https://lkml.kernel.org/r/20240917163720.1644584-1-dave@vasilevsky.caFixes: 75bc255a7444 ("crash: clean up kdump related config items")Signed-off-by: Dave Vasilevsky Reported-by: Reimar Döffinger Closes: https://lists.debian.org/debian-powerpc/2024/07/msg00001.htmlAcked-by: Michael Ellerman [powerpc]Acked-by: Baoquan He Cc: "Eric W. Biederman" Cc: John Paul Adrian Glaubitz Cc: Reimar Döffinger Cc: Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/mips/Kconfig

3ac9999c - MIPS: loongson64: drop HAVE_ARCH_NODEDATA_EXTENSION

Wed, 07 Aug 2024 06:40:50 +0000

MIPS: loongson64: drop HAVE_ARCH_NODEDATA_EXTENSIONCommit f8f9f21c7848 ("MIPS: Fix build error for loongson64 and sgi-ip27")added HAVE_ARCH_NODEDATA_EXTENSION to loongson64 to silence a compilationerror that happened because loongson64 didn't define array of pg_data_t asnode_data like most other architectures did.After rename of __node_data to node_data arch_alloc_nodedata() andHAVE_ARCH_NODEDATA_EXTENSION can be dropped from loongson64.Since it was the only user of HAVE_ARCH_NODEDATA_EXTENSION config optionalso remove this option from arch/mips/Kconfig.Link: https://lkml.kernel.org/r/20240807064110.1003856-7-rppt@kernel.orgSigned-off-by: Mike Rapoport (Microsoft) Reviewed-by: Jonathan Cameron Tested-by: Jonathan Cameron [arm64 + CXL via QEMU]Acked-by: Dan Williams Acked-by: David Hildenbrand Cc: Alexander Gordeev Cc: Andreas Larsson Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christophe Leroy Cc: Dave Hansen Cc: Davidlohr Bueso Cc: David S. Miller Cc: Greg Kroah-Hartman Cc: Heiko Carstens Cc: Huacai Chen Cc: Ingo Molnar Cc: Jiaxun Yang Cc: John Paul Adrian Glaubitz Cc: Jonathan Corbet Cc: Michael Ellerman Cc: Palmer Dabbelt Cc: Rafael J. Wysocki Cc: Rob Herring (Arm) Cc: Samuel Holland Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Will Deacon Cc: Zi Yan Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/mips/Kconfig

6c701269 - MIPS: sgi-ip27: drop HAVE_ARCH_NODEDATA_EXTENSION

Wed, 07 Aug 2024 06:40:48 +0000

MIPS: sgi-ip27: drop HAVE_ARCH_NODEDATA_EXTENSIONCommit f8f9f21c7848 ("MIPS: Fix build error for loongson64 and sgi-ip27")added HAVE_ARCH_NODEDATA_EXTENSION to sgi-ip27 to silence a compilationerror that happened because sgi-ip27 didn't define array of pg_data_t asnode_data like most other architectures did.After addition of node_data array that matches other architectures andafter ensuring that offline nodes do not appear on node_possible_map, itis safe to drop arch_alloc_nodedata() and HAVE_ARCH_NODEDATA_EXTENSIONfrom sgi-ip27.Link: https://lkml.kernel.org/r/20240807064110.1003856-5-rppt@kernel.orgSigned-off-by: Mike Rapoport (Microsoft) Reviewed-by: Jonathan Cameron Tested-by: Jonathan Cameron [arm64 + CXL via QEMU]Acked-by: Dan Williams Acked-by: David Hildenbrand Cc: Alexander Gordeev Cc: Andreas Larsson Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christophe Leroy Cc: Dave Hansen Cc: Davidlohr Bueso Cc: David S. Miller Cc: Greg Kroah-Hartman Cc: Heiko Carstens Cc: Huacai Chen Cc: Ingo Molnar Cc: Jiaxun Yang Cc: John Paul Adrian Glaubitz Cc: Jonathan Corbet Cc: Michael Ellerman Cc: Palmer Dabbelt Cc: Rafael J. Wysocki Cc: Rob Herring (Arm) Cc: Samuel Holland Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Will Deacon Cc: Zi Yan Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/mips/Kconfig

de6c85bf - dma-mapping: clearly mark DMA ops as an architecture feature

Wed, 28 Aug 2024 06:02:47 +0000

dma-mapping: clearly mark DMA ops as an architecture featureDMA ops are a helper for architectures and not for drivers to overridethe DMA implementation.Unfortunately driver authors keep ignoring this. Make the fact moreclear by renaming the symbol to ARCH_HAS_DMA_OPS and having the two driversoverriding their dma_ops depend on that. These drivers should probably bemarked broken, but we can give them a bit of a grace period for that.Signed-off-by: Christoph Hellwig Reviewed-by: Thomas Gleixner Acked-by: Sakari Ailus # for IPU6Acked-by: Robin Murphy List of files: /linux-6.15/arch/mips/Kconfig

fa165f91 - MIPS: Loongson64: Switch to SYNC_R4K

Sun, 14 Jul 2024 02:41:05 +0000

MIPS: Loongson64: Switch to SYNC_R4KNowadays SYNC_R4K is performing better than Loongson64'scustom sync mechanism.Switch to SYNC_R4K to improve performance and reduce codeduplication.Signed-off-by: Jiaxun Yang Reviewed-by: Huacai Chen Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

b9d73218 - treewide: change conditional prompt for choices to 'depends on'

Wed, 26 Jun 2024 18:22:00 +0000

treewide: change conditional prompt for choices to 'depends on'While Documentation/kbuild/kconfig-language.rst provides a briefexplanation, there are recurring confusions regarding the usage of aprompt followed by 'if '. This conditional controls _only_ theprompt.A typical usage is as follows: menuconfig BLOCK bool "Enable the block layer" if EXPERT default yWhen EXPERT=n, the prompt is hidden, but this config entry is stillactive, and BLOCK is set to its default value 'y'. This is reasonablebecause you are likely want to enable the block device support. WhenEXPERT=y, the prompt is shown, allowing you to toggle BLOCK.Please note that it is different from 'depends on EXPERT', which wouldenable and disable the entire config entry.However, this conditional prompt has never worked in a choice block.The following two work in the same way: when EXPERT is disabled, thechoice block is entirely disabled.[Test Code 1] choice prompt "choose" if EXPERT config A bool "A" config B bool "B" endchoice[Test Code 2] choice prompt "choose" depends on EXPERT config A bool "A" config B bool "B" endchoiceI believe the first case should hide only the prompt, producing thedefault: CONFIG_A=y # CONFIG_B is not setThe next commit will change (fix) the behavior of the conditional promptin choice blocks.I see several choice blocks wrongly using a conditional prompt, where'depends on' makes more sense.To preserve the current behavior, this commit converts such misuses.I did not touch the following entry in arch/x86/Kconfig: choice prompt "Memory split" if EXPERT default VMSPLIT_3GThis is truly the correct use of the conditional prompt; when EXPERT=n,this choice block should silently select the reasonable VMSPLIT_3G,although the resulting PAGE_OFFSET will not be affected anyway.Presumably, the one in fs/jffs2/Kconfig is also correct, but I convertedit to 'depends on' to avoid any potential behavioral change.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/mips/Kconfig

62b8db3a - mips: select REALTEK_OTTO_TIMER for Realtek platforms

Wed, 10 Jul 2024 04:35:22 +0000

mips: select REALTEK_OTTO_TIMER for Realtek platformsWhen MACH_REALTEK_RTL is selected automatically select theREALTEK_OTTO_TIMER option in order to support the Realtek platforms thatrequire it.Signed-off-by: Chris Packham Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

426fa8e4 - MIPS: csrc-r4k: Select HAVE_UNSTABLE_SCHED_CLOCK if SMP && 64BIT

Wed, 12 Jun 2024 08:54:30 +0000

MIPS: csrc-r4k: Select HAVE_UNSTABLE_SCHED_CLOCK if SMP && 64BITcsrc-r4k suffers from SMP synchronization overhead.Select HAVE_UNSTABLE_SCHED_CLOCK to workaround driftbetween the CPUs on the system. HAVE_UNSTABLE_SCHED_CLOCKrequires cmpxchg64, so enable it for 64 bits only.Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

2226d454 - MIPS: select CPU_PM with SUSPEND

Tue, 07 May 2024 15:22:00 +0000

MIPS: select CPU_PM with SUSPENDFunctionalities provided by CPU_PM are essential for suspendto work on all platforms.Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

fbe0fae6 - MIPS: mobileye: Add EyeQ6H support

Mon, 13 May 2024 18:34:17 +0000

MIPS: mobileye: Add EyeQ6H supportEyeQ6H (or “High”) is an other SoC from Mobileye still based on theMIPS I6500 architecture as the EyeQ5. The 2 clusters of this SoCcontains 4 cores which are capable of running 4 threads. Besides this,it features multiple controllers such as the classic UART, high speedI2C, SPI, as well as CAN-FD, PCIe Gen4, Octal/Quad SPI Flashinterface, Gigabit Ethernet, MIPI CSI-2, MIPI DSI, and eMMC 5.1. Italso includes a Hardware Security Module, Functional Safety Hardware,and video encoders and more.This commit provides the infrastructure to build a kernel running onEyeQ6H SoC. For now the support is limited and only one CPU core isrunning.Reviewed-by: Jiaxun Yang Signed-off-by: Gregory CLEMENT Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig

25176ad0 - mm/treewide: rename CONFIG_HAVE_FAST_GUP to CONFIG_HAVE_GUP_FAST

Tue, 02 Apr 2024 12:55:15 +0000

mm/treewide: rename CONFIG_HAVE_FAST_GUP to CONFIG_HAVE_GUP_FASTNowadays, we call it "GUP-fast", the external interface includes functionslike "get_user_pages_fast()", and we renamed all internal functions toreflect that as well.Let's make the config option reflect that.Link: https://lkml.kernel.org/r/20240402125516.223131-3-david@redhat.comSigned-off-by: David Hildenbrand Reviewed-by: Mike Rapoport (IBM) Reviewed-by: Jason Gunthorpe Reviewed-by: John Hubbard Cc: Peter Xu Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/mips/Kconfig

9a88b338 - MIPS: move unselectable FIT_IMAGE_FDT_EPM5 out of the "System type" choice

Sat, 23 Mar 2024 08:51:00 +0000

MIPS: move unselectable FIT_IMAGE_FDT_EPM5 out of the "System type" choiceThe reason is described in 5033ad566016 ("MIPS: move unselectableentries out of the "CPU type" choice").At the same time, commit 101bd58fde10 ("MIPS: Add support for MobileyeEyeQ5") introduced another unselectable choice member.(In fact, 5033ad566016 and 101bd58fde10 have the same commit time.)Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/mips/Kconfig

ba89f9c8 - arch: consolidate existing CONFIG_PAGE_SIZE_*KB definitions

Fri, 23 Feb 2024 22:18:37 +0000

arch: consolidate existing CONFIG_PAGE_SIZE_*KB definitionsThese four architectures define the same Kconfig symbols for configuringthe page size. Move the logic into a common place where it can be sharedwith all other architectures.Reviewed-by: Thomas Gleixner Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/mips/Kconfig

74efddad - MIPS: Limit MIPS_MT_SMP support by ISA reversion

Fri, 02 Feb 2024 18:21:45 +0000

MIPS: Limit MIPS_MT_SMP support by ISA reversionMIPS MT ASE is only available on ISA between Release 1 and Release 5.Add ISA level dependency to Kconfig to fix build.Reported-by: Guenter Roeck Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/Kconfig