linux.git/arch/mips/Kconfig, branch vm-bind

Merge tag 'riscv-for-linus-5.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2022-05-31T21:10:54+00:00

Pull RISC-V updates from Palmer Dabbelt: - Support for the Svpbmt extension, which allows memory attributes to be encoded in pages - Support for the Allwinner D1's implementation of page-based memory attributes - Support for running rv32 binaries on rv64 systems, via the compat subsystem - Support for kexec_file() - Support for the new generic ticket-based spinlocks, which allows us to also move to qrwlock. These should have already gone in through the asm-geneic tree as well - A handful of cleanups and fixes, include some larger ones around atomics and XIP * tag 'riscv-for-linus-5.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits) RISC-V: Prepare dropping week attribute from arch_kexec_apply_relocations[_add] riscv: compat: Using seperated vdso_maps for compat_vdso_info RISC-V: Fix the XIP build RISC-V: Split out the XIP fixups into their own file RISC-V: ignore xipImage RISC-V: Avoid empty create_*_mapping definitions riscv: Don't output a bogus mmu-type on a no MMU kernel riscv: atomic: Add custom conditional atomic operation implementation riscv: atomic: Optimize dec_if_positive functions riscv: atomic: Cleanup unnecessary definition RISC-V: Load purgatory in kexec_file RISC-V: Add purgatory RISC-V: Support for kexec_file on panic RISC-V: Add kexec_file support RISC-V: use memcpy for kexec_file mode kexec_file: Fix kexec_file.c build error for riscv platform riscv: compat: Add COMPAT Kbuild skeletal support riscv: compat: ptrace: Add compat_arch_ptrace implement riscv: compat: signal: Add rt_frame implementation riscv: add memory-type errata for T-Head ...

MIPS: Kconfig: Fix indentation and add endif comment

2022-05-24T11:03:55+00:00

The convention for indentation seems to be a single tab. Help text is further indented by an additional two whitespaces. Fix the lines that violate these rules. While add it, add a missing trailing endif comment. Signed-off-by: Juerg Haefliger Signed-off-by: Thomas Bogendoerfer

arch: Add SYSVIPC_COMPAT for all architectures

2022-04-26T20:35:37+00:00

The existing per-arch definitions are pretty much historic cruft. Move SYSVIPC_COMPAT into init/Kconfig. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Acked-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Tested-by: Heiko Stuebner Acked-by: Helge Deller # parisc Link: https://lore.kernel.org/r/20220405071314.3225832-5-guoren@kernel.org Signed-off-by: Palmer Dabbelt

MIPS: Fix build error for loongson64 and sgi-ip27

2022-03-24T08:45:15+00:00

Select HAVE_ARCH_NODEDATA_EXTENSION for loongson64 to fix build error when CONFIG_NUMA=y: mips64el-unknown-linux-gnu-ld: mm/page_alloc.o: in function `free_area_init': (.init.text+0x1714): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: (.init.text+0x1730): undefined reference to `node_data' Also, select HAVE_ARCH_NODEDATA_EXTENSION for sgi-ip27 to fix build error: mips64el-unknown-linux-gnu-ld: mm/page_alloc.o: in function `free_area_init': page_alloc.c:(.init.text+0x1ba8): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: page_alloc.c:(.init.text+0x1bcc): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: page_alloc.c:(.init.text+0x1be4): undefined reference to `node_data' mips64el-unknown-linux-gnu-ld: page_alloc.c:(.init.text+0x1bf4): undefined reference to `node_data' Signed-off-by: Feiyang Chen Reviewed-by: Huacai Chen Signed-off-by: Thomas Bogendoerfer

MIPS: Only use current_stack_pointer on GCC

2022-03-14T14:02:53+00:00

Unfortunately, Clang did not have support for "sp" as a global register definition, and was crashing after the addition of current_stack_pointer. This has been fixed in Clang 14, but earlier Clang versions need to avoid this code, so add a versioned test and revert back to the open-coded asm instances. Fixes Clang build error: fatal error: error in backend: Invalid register name global variable Fixes: 200ed341b864 ("mips: Implement "current_stack_pointer"") Reported-by: Nathan Chancellor Reviewed-by: Nathan Chancellor Link: https://lore.kernel.org/lkml/YikTQRql+il3HbrK@dev-arch.thelio-3990X Cc: Thomas Bogendoerfer Cc: Marc Zyngier Cc: Guenter Roeck Cc: Yanteng Si Cc: linux-mips@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Nick Desaulniers Signed-off-by: Thomas Bogendoerfer

mips: remove reference to "newer Loongson-3"

2022-03-07T12:16:13+00:00

Newest Loongson-3 processors have moved to use LoongArch architecture. Sadly, the LL/SC issue is still existing on both latest Loongson-3 processors using MIPS64 (Loongson-3A4000) and LoongArch (Loongson-3A5000). As it's very unlikely there will be new Loongson-3 processors using MIPS64, let's stop people from false hoping. Signed-off-by: Xi Ruoyao Cc: Huacai Chen Signed-off-by: Thomas Bogendoerfer

mips: Implement "current_stack_pointer"

2022-03-01T15:57:55+00:00

To follow the existing per-arch conventions replace open-coded uses of asm "sp" as "current_stack_pointer". This will let it be used in non-arch places (like HARDENED_USERCOPY). Cc: Thomas Bogendoerfer Cc: Marc Zyngier Cc: Guenter Roeck Cc: Mark Rutland Cc: Yanteng Si Cc: linux-mips@vger.kernel.org Signed-off-by: Kees Cook Signed-off-by: Thomas Bogendoerfer

MIPS: Remove TX39XX support

2022-03-01T09:07:22+00:00

No (active) developer owns this hardware, so let's remove Linux support. Signed-off-by: Thomas Bogendoerfer Acked-by: Guenter Roeck Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Acked-by: Atsushi Nemoto

MIPS: remove asm/war.h

2022-02-22T08:35:49+00:00

The major part for workaround handling has already moved to config options. This change replaces the remaining defines by already available config options and gets rid of war.h Signed-off-by: Thomas Bogendoerfer

mips: Enable KCSAN

2022-02-07T17:31:57+00:00

This patch enables KCSAN for the 64-bit version. Updated rules for the incompatible compilation units (vdso, boot/compressed). Signed-off-by: Nemanja Rakovic Signed-off-by: Thomas Bogendoerfer