Changes in Kbuild

b5fa903b - fprobe: Add fprobe_header encoding feature

Thu, 26 Dec 2024 05:14:17 +0000

fprobe: Add fprobe_header encoding featureFprobe store its data structure address and size on the fgraph return stackby __fprobe_header. But most 64bit architecture can combine those toone unsigned long value because 4 MSB in the kernel address are the same.With this encoding, fprobe can consume less space on ret_stack.This introduces asm/fprobe.h to define arch dependent encode/decodemacros. Note that since fprobe depends on CONFIG_HAVE_FUNCTION_GRAPH_FREGS,currently only arm64, loongarch, riscv, s390 and x86 are supported.Signed-off-by: Masami Hiramatsu (Google) Acked-by: Heiko Carstens # s390Cc: Catalin Marinas Cc: Alexei Starovoitov Cc: Florent Revest Cc: Martin KaFai Lau Cc: bpf Cc: Alexei Starovoitov Cc: Jiri Olsa Cc: Alan Maguire Cc: Mark Rutland Cc: Heiko Carstens Cc: Will Deacon Cc: Huacai Chen Cc: WANG Xuerui Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: x86@kernel.orgCc: "H. Peter Anvin" Cc: Arnd Bergmann Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Link: https://lore.kernel.org/173519005783.391279.5307910947400277525.stgit@devnote2Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

46bcce50 - arch, mm: move definition of node_data to generic code

Wed, 07 Aug 2024 06:40:51 +0000

arch, mm: move definition of node_data to generic codeEvery architecture that supports NUMA defines node_data in the same way: struct pglist_data *node_data[MAX_NUMNODES];No reason to keep multiple copies of this definition and its forwarddeclarations, especially when such forward declaration is the only thingin include/asm/mmzone.h for many architectures.Add definition and declaration of node_data to generic code and droparchitecture-specific versions.Link: https://lkml.kernel.org/r/20240807064110.1003856-8-rppt@kernel.orgSigned-off-by: Mike Rapoport (Microsoft) Acked-by: David Hildenbrand Reviewed-by: Jonathan Cameron Acked-by: Davidlohr Bueso Tested-by: Zi Yan # for x86_64 and arm64Tested-by: Jonathan Cameron [arm64 + CXL via QEMU]Acked-by: Dan Williams Cc: Alexander Gordeev Cc: Andreas Larsson Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christophe Leroy Cc: Dave Hansen 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 Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

e632bca0 - arm64: generate 64-bit syscall.tbl

Thu, 04 Jul 2024 12:33:34 +0000

arm64: generate 64-bit syscall.tblChange the asm/unistd.h header for arm64 to no longer includeasm-generic/unistd.h itself, but instead generate both the asm/unistd.hcontents and the list of entry points using the syscall.tbl scripts thatwe use on most other architectures.Once his is done for the remaining architectures, the generic unistd.hheader can be removed and the generated tbl file put in its place.The Makefile changes are more complex than they should be, I needa little help to improve those. Ideally this should be done in anarchitecture-independent way as well.Acked-by: Catalin Marinas Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

7fe33e9f - arm64: convert unistd_32.h to syscall.tbl format

Tue, 08 Nov 2022 15:46:27 +0000

arm64: convert unistd_32.h to syscall.tbl formatThis is a straight conversion from the old asm/unistd32.h into theformat used by 32-bit arm and most other architectures, calling scriptsto generate the asm/unistd32.h header and a new asm/syscalls32.h headers.I used a semi-automated text replacement method to do the conversion,and then used 'vimdiff' to synchronize the whitespace and the (unused)names of the non-compat syscalls with the arm version.There are two differences between the generated syscalls names and theold version: - the old asm/unistd32.h contained only a __NR_sync_file_range2 entry, while the arm32 version also defines __NR_arm_sync_file_range with the same number. I added this duplicate back in asm/unistd32.h. - __NR__sysctl was removed from the arm64 file a while ago, but all the tables still contain it. This should probably get removed everywhere but I added it here for consistency.On top of that, the arm64 version does not contain any references tothe 32-bit OABI syscalls that are not supported by arm64. If we everwant to share the file between arm32 and arm64, it would not behard to add support for both in one file.Acked-by: Catalin Marinas Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

484de085 - arm64: Factor out cpucap definitions

Mon, 16 Oct 2023 10:24:26 +0000

arm64: Factor out cpucap definitionsFor clarity it would be nice to factor cpucap manipulation out of, and the obvious place would be , butthis will clash somewhat with .Rename to ,matching what we do for , and introduce anew which includes the generated header.Subsequent patches will fill out .There should be no functional change as a result of this patch.Signed-off-by: Mark Rutland Cc: Marc Zyngier Cc: Mark Brown Cc: Suzuki K Poulose Cc: Will Deacon Signed-off-by: Catalin Marinas List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

c07d8017 - arm64/sysreg: Enable automatic generation of system register definitions

Tue, 03 May 2022 17:02:30 +0000

arm64/sysreg: Enable automatic generation of system register definitionsNow that we have a script for generating system registers hook it up to thebuild system similarly to cpucaps. Since we don't currently have any actualregister information in the input file this should produce no change in thebuilt kernel. For ease of review the register information will be convertedin separate patches.Signed-off-by: Mark Brown Acked-by: Mark Rutland Link: https://lore.kernel.org/r/20220503170233.507788-10-broonie@kernel.orgSigned-off-by: Catalin Marinas List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

66bcd060 - parport_pc: Also enable driver for PCI systems

Mon, 14 Feb 2022 20:16:50 +0000

parport_pc: Also enable driver for PCI systemsNowadays PC-style parallel ports come in the form of PCI and PCIe optioncards and there are some combined parallel/serial option cards as wellthat we handle in the parport subsystem. There is nothing in particularthat would prevent them from being used in any system equipped with PCIor PCIe connectivity, except that we do not permit the PARPORT_PC configoption to be selected for platforms for which ARCH_MIGHT_HAVE_PC_PARPORThas not been set for.The only PCI platforms that actually can't make use of PC-style parallelport hardware are those newer PCIe systems that have no support for I/Ocycles in the host bridge, required by such parallel ports. Notably,this includes the s390 arch, which has port I/O accessors that causecompilation warnings (promoted to errors with `-Werror'), and there areother cases such as the POWER9 PHB4 device, though this one has variableport I/O accessors that depend on the particular system. Also it is notclear whether the serial port side of devices enabled by PARPORT_SERIALuses port I/O or MMIO. Finally Super I/O solutions are always eitherISA or platform devices.Make the PARPORT_PC option selectable also for PCI systems then, exceptfor the s390 arch, however limit the availability of PARPORT_PC_SUPERIOto platforms that enable ARCH_MIGHT_HAVE_PC_PARPORT. Update platformsaccordingly for the required header.Acked-by: Sudip Mukherjee Signed-off-by: Maciej W. Rozycki Link: https://lore.kernel.org/r/alpine.DEB.2.21.2202141955550.34636@angie.orcam.me.ukSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

6d47c23b - set_memory: allow querying whether set_direct_map_*() is actually enabled

Thu, 08 Jul 2021 01:07:59 +0000

set_memory: allow querying whether set_direct_map_*() is actually enabledOn arm64, set_direct_map_*() functions may return 0 without actuallychanging the linear map. This behaviour can be controlled using kernelparameters, so we need a way to determine at runtime whether calls toset_direct_map_invalid_noflush() and set_direct_map_default_noflush() haveany effect.Extend set_memory API with can_set_direct_map() function that allowschecking if calling set_direct_map_*() will actually change the pagetable, replace several occurrences of open coded checks in arm64 with thenew function and provide a generic stub for architectures that alwaysmodify page tables upon calls to set_direct_map APIs.[arnd@arndb.de: arm64: kfence: fix header inclusion ]Link: https://lkml.kernel.org/r/20210518072034.31572-4-rppt@kernel.orgSigned-off-by: Mike Rapoport Reviewed-by: Catalin Marinas Reviewed-by: David Hildenbrand Acked-by: James Bottomley Cc: Alexander Viro Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Christopher Lameter Cc: Dan Williams Cc: Dave Hansen Cc: Elena Reshetova Cc: Hagen Paul Pfeifer Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: James Bottomley Cc: "Kirill A. Shutemov" Cc: Mark Rutland Cc: Matthew Wilcox Cc: Michael Kerrisk Cc: Palmer Dabbelt Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Rick Edgecombe Cc: Roman Gushchin Cc: Shakeel Butt Cc: Shuah Khan Cc: Thomas Gleixner Cc: Tycho Andersen Cc: Will Deacon Cc: kernel test robot Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

0c6c2d36 - arm64: Generate cpucaps.h

Wed, 28 Apr 2021 12:12:31 +0000

arm64: Generate cpucaps.hThe arm64 code allocates an internal constant to every CPU feature it candetect, distinct from the public hwcap numbers we use to expose somefeatures to userspace. Currently this is maintained manually which is anirritating source of conflicts when working on new features, to avoid thisreplace the header with a simple text file listing the names we've assignedand sort it to minimise conflicts.As part of doing this we also do the Kbuild hookup required to hook upan arch tools directory and to generate header files in there.This will result in a renumbering and reordering of the existing constants,since they are all internal only the values should not be important. Thereordering will impact the order in which some steps in enumeration handlefeatures but the algorithm is not intended to depend on this and I haven'tseen any issues when testing. Due to the UAO cpucap having been removed inthe past we end up with ARM64_NCAPS being 1 smaller than it was before.Signed-off-by: Mark Brown Reviewed-by: Mark Rutland Tested-by: Mark Rutland Link: https://lore.kernel.org/r/20210428121231.11219-1-broonie@kernel.orgSigned-off-by: Catalin Marinas List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

87dbc209 - local64.h: make mandatory

Tue, 29 Dec 2020 23:14:49 +0000

local64.h: make mandatoryMake mandatory in include/asm-generic/Kbuild andremove all arch/*/include/asm/local64.h arch-specific files since theyonly #include .This fixes build errors on arch/c6x/ and arch/nios2/ forblock/blk-iocost.c.Build-tested on 21 of 25 arch-es. (tools problems on the others)Yes, we could even rename to and change all #includes to use instead.Link: https://lkml.kernel.org/r/20201227024446.17018-1-rdunlap@infradead.orgSigned-off-by: Randy Dunlap Suggested-by: Christoph Hellwig Reviewed-by: Masahiro Yamada Cc: Jens Axboe Cc: Ley Foon Tan Cc: Mark Salter Cc: Aurelien Jacquiot Cc: Peter Zijlstra Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

c1a33aeb - KVM: arm64: Use common KVM implementation of MMU memory caches

Fri, 03 Jul 2020 02:35:42 +0000

KVM: arm64: Use common KVM implementation of MMU memory cachesMove to the common MMU memory cache implementation now that the commoncode and arm64's existing code are semantically compatible.No functional change intended.Cc: Marc Zyngier Suggested-by: Christoffer Dall Signed-off-by: Sean Christopherson Message-Id: <20200703023545.8771-19-sean.j.christopherson@intel.com>Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

2aa9c199 - KVM: Move x86's version of struct kvm_mmu_memory_cache to common code

Fri, 03 Jul 2020 02:35:38 +0000

KVM: Move x86's version of struct kvm_mmu_memory_cache to common codeMove x86's 'struct kvm_mmu_memory_cache' to common code in anticipationof moving the entire x86 implementation code to common KVM and reusingit for arm64 and MIPS. Add a new architecture specific asm/kvm_types.hto control the existence and parameters of the struct. The new headeris needed to avoid a chicken-and-egg problem with asm/kvm_host.h as allarchitectures define instances of the struct in their vCPU structs.Add an asm-generic version of kvm_types.h to avoid having empty files onPPC and s390 in the long term, and for arm64 and mips in the short term.Suggested-by: Christoffer Dall Reviewed-by: Ben Gardon Signed-off-by: Sean Christopherson Message-Id: <20200703023545.8771-15-sean.j.christopherson@intel.com>Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

630f289b - asm-generic: make more kernel-space headers mandatory

Thu, 02 Apr 2020 04:03:12 +0000

asm-generic: make more kernel-space headers mandatoryChange a header to mandatory-y if both of the following are met:[1] At least one architecture (except um) specifies it as generic-y in arch/*/include/asm/Kbuild[2] Every architecture (except um) either has its own implementation (arch/*/include/asm/*.h) or specifies it as generic-y in arch/*/include/asm/KbuildThis commit was generated by the following shell script.----------------------------------->8-----------------------------------arches=$(cd arch; ls -1 | sed -e '/Kconfig/d' -e '/um/d')tmpfile=$(mktemp)grep "^mandatory-y +=" include/asm-generic/Kbuild > $tmpfilefind arch -path 'arch/*/include/asm/Kbuild' | xargs sed -n 's/^generic-y += $.*$/\1/p' | sort -u |while read headerdo mandatory=yes for arch in $arches do if ! grep -q "generic-y += $header" arch/$arch/include/asm/Kbuild && ! [ -f arch/$arch/include/asm/$header ]; then mandatory=no break fi done if [ "$mandatory" = yes ]; then echo "mandatory-y += $header" >> $tmpfile for arch in $arches do sed -i "/generic-y += $header/d" arch/$arch/include/asm/Kbuild done fidonesed -i '/^mandatory-y +=/d' include/asm-generic/KbuildLANG=C sort $tmpfile >> include/asm-generic/Kbuild----------------------------------->8-----------------------------------One obvious benefit is the diff stat: 25 files changed, 52 insertions(+), 557 deletions(-)It is tedious to list generic-y for each arch that needs it.So, mandatory-y works like a fallback default (by just wrappingasm-generic one) when arch does not have a specific headerimplementation.See the following commits:def3f7cefe4e81c296090e1722a76551142c227ca1b39bae16a62ce4aae02d958224f19316d98b24It is tedious to convert headers one by one, so I processed by a shellscript.Signed-off-by: Masahiro Yamada Signed-off-by: Andrew Morton Cc: Michal Simek Cc: Christoph Hellwig Cc: Arnd Bergmann Link: http://lkml.kernel.org/r/20200210175452.5030-1-masahiroy@kernel.orgSigned-off-by: Linus Torvalds List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

def3f7ce - asm-generic: Make dma-contiguous.h a mandatory include/asm header

Fri, 17 Jan 2020 07:48:17 +0000

asm-generic: Make dma-contiguous.h a mandatory include/asm headerdma-continuguous.h is generic for all architectures except arm32 which hasits own version.Similar change was done for msi.h by commit a1b39bae16a6("asm-generic: Make msi.h a mandatory include/asm header")Suggested-by: Christoph Hellwig Link: https://lore.kernel.org/linux-arm-kernel/20200117080446.GA8980@lst.de/T/#m92bb56b04161057635d4142e1b3b9b6b0a70122eSigned-off-by: Michal Simek Reviewed-by: Christoph Hellwig Acked-by: Thomas Gleixner Acked-by: Arnd Bergmann Acked-by: Paul Walmsley # for arch/riscv List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

a1b39bae - asm-generic: Make msi.h a mandatory include/asm header

Fri, 25 Oct 2019 06:10:37 +0000

asm-generic: Make msi.h a mandatory include/asm headermsi.h is generic for all architectures except x86, which has its ownversion. Enabling MSI by adding msi.h to every architecture's Kbuild isjust an additional step which doesn't need to be done.Make msi.h mandatory in the asm-generic/Kbuild so we don't have to do itfor each architecture.Suggested-by: Christoph Hellwig Link: https://lore.kernel.org/r/c991669e29a79b1a8e28c3b4b3a125801a693de8.1571983829.git.michal.simek@xilinx.comTested-by: Paul Walmsley # build only, rv32/rv64Signed-off-by: Michal Simek Signed-off-by: Bjorn Helgaas Reviewed-by: Masahiro Yamada Acked-by: Waiman Long Acked-by: Paul Walmsley # arch/riscv List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

5489c8e0 - arm64: use asm-generic/dma-mapping.h

Wed, 24 Jul 2019 12:07:28 +0000

arm64: use asm-generic/dma-mapping.hNow that the Xen special cases are gone nothing worth mentioning isleft in the arm64 file, so switch to use theasm-generic version instead.Signed-off-by: Christoph Hellwig Acked-by: Will Deacon Reviewed-by: Stefano Stabellini List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

96ac6d43 - treewide: Add SPDX license identifier - Kbuild

Thu, 30 May 2019 12:03:44 +0000

treewide: Add SPDX license identifier - KbuildAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0Reported-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman Reviewed-by: Kate Stewart Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

b09e8936 - arch: remove and

Tue, 14 May 2019 22:46:54 +0000

arch: remove and Now that all instances of #include have been replaced with#include , we can remove these.Link: http://lkml.kernel.org/r/1553267665-27228-2-git-send-email-yamada.masahiro@socionext.comSigned-off-by: Masahiro Yamada Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

c67fdc1f - arch: mostly remove

Tue, 23 Apr 2019 16:38:07 +0000

arch: mostly remove A few architectures use internally, but nothing incommon code does. Remove all the empty or almost empty versions of it,including the asm-generic one.Signed-off-by: Christoph Hellwig Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/arm64/include/asm/Kbuild

fdcd06a8 - arch: Use asm-generic header for asm/mmiowb.h

Fri, 22 Feb 2019 12:49:41 +0000

arch: Use asm-generic header for asm/mmiowb.hHook up asm-generic/mmiowb.h to Kbuild for all architectures so that wecan subsequently include asm/mmiowb.h from core code.Cc: Masahiro Yamada Cc: Arnd Bergmann Acked-by: Linus Torvalds Signed-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/include/asm/Kbuild