kernel/linux.git/arch/arm/include/asm/vmlinux.lds.h, branch v6.1.168

ARM: Do not use NOCROSSREFS directive with ld.lld

2022-03-09T22:14:16+00:00

ld.lld does not support the NOCROSSREFS directive at the moment, which breaks the build after commit b9baf5c8c5c3 ("ARM: Spectre-BHB workaround"): ld.lld: error: ./arch/arm/kernel/vmlinux.lds:34: AT expected, but got NOCROSSREFS Support for this directive will eventually be implemented, at which point a version check can be added. To avoid breaking the build in the meantime, just define NOCROSSREFS to nothing when using ld.lld, with a link to the issue for tracking. Cc: stable@vger.kernel.org Fixes: b9baf5c8c5c3 ("ARM: Spectre-BHB workaround") Link: https://github.com/ClangBuiltLinux/linux/issues/1609 Signed-off-by: Nathan Chancellor Signed-off-by: Linus Torvalds

ARM: Spectre-BHB workaround

2022-03-05T10:42:07+00:00

Workaround the Spectre BHB issues for Cortex-A15, Cortex-A57, Cortex-A72, Cortex-A73 and Cortex-A75. We also include Brahma B15 as well to be safe, which is affected by Spectre V2 in the same ways as Cortex-A15. Reviewed-by: Catalin Marinas Signed-off-by: Russell King (Oracle)

ARM: use LOADADDR() to get load address of sections

2022-03-05T10:41:58+00:00

Use the linker's LOADADDR() macro to get the load address of the sections, and provide a macro to set the start and end symbols. Acked-by: Catalin Marinas Signed-off-by: Russell King (Oracle)

arm/build: Assert for unwanted sections

2020-09-01T08:03:18+00:00

In preparation for warning on orphan sections, enforce expected-to-be-zero-sized sections (since discarding them might hide problems with them suddenly gaining unexpected entries). Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Cc: Russell King Link: https://lore.kernel.org/r/20200821194310.3089815-19-keescook@chromium.org

arm/build: Add missing sections

2020-09-01T08:03:18+00:00

Add missing text stub sections .vfp11_veneer and .v4_bx, as well as missing DWARF sections, when present in the build. Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Reviewed-by: Nick Desaulniers Cc: Russell King Link: https://lore.kernel.org/r/20200821194310.3089815-18-keescook@chromium.org

arm/build: Explicitly keep .ARM.attributes sections

2020-09-01T08:03:18+00:00

In preparation for adding --orphan-handling=warn, explicitly keep the .ARM.attributes section (at address 0[1]) by expanding the existing ELF_DETAILS macro into ARM_DETAILS. [1] https://reviews.llvm.org/D85867 Suggested-by: Nick Desaulniers Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Reviewed-by: Fangrui Song Cc: Russell King Link: https://lore.kernel.org/lkml/CAKwvOdk-racgq5pxsoGS6Vtifbtrk5fmkmnoLxrQMaOvV0nPWw@mail.gmail.com/ Link: https://lore.kernel.org/r/20200821194310.3089815-17-keescook@chromium.org

arm/build: Refactor linker script headers

2020-09-01T08:03:17+00:00

In preparation for adding --orphan-handling=warn, refactor the linker script header includes, and extract common macros. Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Cc: Russell King Link: https://lore.kernel.org/r/20200821194310.3089815-16-keescook@chromium.org