kernel.git/arch/powerpc/kernel/prom_init_check.sh, branch linux-rolling-stable

powerpc/prom_init: Fix shellcheck warnings

2025-08-20T08:35:18Z

Fix "Double quote to prevent globbing and word splitting." warning from shellcheck Tested-by: Venkat Rao Bagalkote Reviewed-by: Stephen Rothwell Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250518044107.39928-3-maddy@linux.ibm.com

kasan, powerpc: don't rename memintrinsics if compiler adds prefixes

2023-03-24T00:18:33Z

With appropriate compiler support [1], KASAN builds use __asan prefixed meminstrinsics, and KASAN no longer overrides memcpy/memset/memmove. If compiler support is detected (CC_HAS_KASAN_MEMINTRINSIC_PREFIX), define memintrinsics normally (do not prefix '__'). On powerpc, KASAN is the only user of __mem functions, which are used to define instrumented memintrinsics. Alias the normal versions for KASAN to use in its implementation. Link: https://lore.kernel.org/all/20230224085942.1791837-1-elver@google.com/ [1] Link: https://lore.kernel.org/oe-kbuild-all/202302271348.U5lvmo0S-lkp@intel.com/ Link: https://lkml.kernel.org/r/20230227094726.3833247-1-elver@google.com Signed-off-by: Marco Elver Reported-by: kernel test robot Acked-by: Michael Ellerman [powerpc] Cc: Alexander Potapenko Cc: Andrey Konovalov Cc: Andrey Ryabinin Cc: Christophe Leroy Cc: Daniel Axtens Cc: Dmitry Vyukov Cc: Liam R. Howlett Cc: Nicholas Piggin Cc: Vincenzo Frascino Signed-off-by: Andrew Morton

kbuild: do not print extra logs for V=2

2023-01-22T14:43:32Z

Some scripts increase the verbose level when V=1, but others when not V=0. I think the former is correct because V=2 is not a log level but a switch to print the reason for rebuilding. Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier

powerpc/64: Remove unused prom_init_toc symbols

2022-09-26T10:58:16Z

Commit 24d33ac5b8ff ("powerpc/64s: Make prom_init require RELOCATABLE") made prom_init depend on CONFIG_RELOCATABLE. But it missed cleaning up a case in the linker script for RELOCATABLE=n, and associated symbols. Remove them now. Fixes: 24d33ac5b8ff ("powerpc/64s: Make prom_init require RELOCATABLE") Reported-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220920131157.1032707-1-mpe@ellerman.id.au

powerpc/prom_init: Fix kernel config grep

2022-06-24T03:47:26Z

When searching for config options, use the KCONFIG_CONFIG shell variable so that builds using non-standard config locations work. Fixes: 26deb04342e3 ("powerpc: prepare string/mem functions for KASAN") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Liam R. Howlett Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220624011745.4060795-1-Liam.Howlett@oracle.com

powerpc/prom_init: Undo relocation before entering secure mode

2019-10-29T04:12:17Z

The ultravisor will do an integrity check of the kernel image but we relocated it so the check will fail. Restore the original image by relocating it back to the kernel virtual base address. This works because during build vmlinux is linked with an expected virtual runtime address of KERNELBASE. Fixes: 6a9c930bd775 ("powerpc/prom_init: Add the ESM call to prom_init") Signed-off-by: Thiago Jung Bauermann Tested-by: Michael Anderson [mpe: Add IS_ENABLED() to fix the CONFIG_RELOCATABLE=n build] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190911163433.12822-1-bauerman@linux.ibm.com

kbuild: add $(BASH) to run scripts with bash-extension

2019-09-04T13:54:13Z

CONFIG_SHELL falls back to sh when bash is not installed on the system, but nobody is testing such a case since bash is usually installed. So, shell scripts invoked by CONFIG_SHELL are only tested with bash. It makes it difficult to test whether the hashbang #!/bin/sh is real. For example, #!/bin/sh in arch/powerpc/kernel/prom_init_check.sh is false. (I fixed it up) Besides, some shell scripts invoked by CONFIG_SHELL use bash-extension and #!/bin/bash is specified as the hashbang, while CONFIG_SHELL may not always be set to bash. Probably, the right thing to do is to introduce BASH, which is bash by default, and always set CONFIG_SHELL to sh. Replace $(CONFIG_SHELL) with $(BASH) for bash scripts. If somebody tries to add bash-extension to a #!/bin/sh script, it will be caught in testing because /bin/sh is a symlink to dash on some major distributions. Signed-off-by: Masahiro Yamada

Merge tag 'powerpc-5.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2019-06-15T17:29:32Z

Pull powerpc fixes from Michael Ellerman: "One fix for a regression introduced by our 32-bit KASAN support, which broke booting on machines with "bootx" early debugging enabled. A fix for a bug which broke kexec on 32-bit, introduced by changes to the 32-bit STRICT_KERNEL_RWX support in v5.1. Finally two fixes going to stable for our THP split/collapse handling, discovered by Nick. The first fixes random crashes and/or corruption in guests under sufficient load. Thanks to: Nicholas Piggin, Christophe Leroy, Aaro Koskinen, Mathieu Malaterre" * tag 'powerpc-5.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/32s: fix booting with CONFIG_PPC_EARLY_DEBUG_BOOTX powerpc/64s: __find_linux_pte() synchronization vs pmdp_invalidate() powerpc/64s: Fix THP PMD collapse serialisation powerpc: Fix kexec failure on book3s/32

powerpc/32s: fix booting with CONFIG_PPC_EARLY_DEBUG_BOOTX

2019-06-07T09:00:14Z

When booting through OF, setup_disp_bat() does nothing because disp_BAT are not set. By change, it used to work because BOOTX buffer is mapped 1:1 at address 0x81000000 by the bootloader, and btext_setup_display() sets virt addr same as phys addr. But since commit 215b823707ce ("powerpc/32s: set up an early static hash table for KASAN."), a temporary page table overrides the bootloader mapping. This 0x81000000 is also problematic with the newly implemented Kernel Userspace Access Protection (KUAP) because it is within user address space. This patch fixes those issues by properly setting disp_BAT through a call to btext_prepare_BAT(), allowing setup_disp_bat() to properly setup BAT3 for early bootx screen buffer access. Reported-by: Mathieu Malaterre Fixes: 215b823707ce ("powerpc/32s: set up an early static hash table for KASAN.") Signed-off-by: Christophe Leroy Tested-by: Mathieu Malaterre Signed-off-by: Michael Ellerman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman