kernel/linux.git/arch/xtensa/lib, branch v6.6.131

xtensa: umulsidi3: fix conditional expression

2023-09-20T12:03:22+00:00

Even when a variant has one or more of these defines set to 1, the multiplier code paths are not used. Change the expression so that the correct code paths are used. arch/xtensa/lib/umulsidi3.S:44:38: warning: "XCHAL_NO_MUL" is not defined, evaluates to 0 [-Wundef] 44 | #if defined(__XTENSA_CALL0_ABI__) && XCHAL_NO_MUL arch/xtensa/lib/umulsidi3.S:145:38: warning: "XCHAL_NO_MUL" is not defined, evaluates to 0 [-Wundef] 145 | #if defined(__XTENSA_CALL0_ABI__) && XCHAL_NO_MUL arch/xtensa/lib/umulsidi3.S:159:5: warning: "XCHAL_NO_MUL" is not defined, evaluates to 0 [-Wundef] 159 | #if XCHAL_NO_MUL Fixes: 8939c58d68f9 ("xtensa: add __umulsidi3 helper") Signed-off-by: Randy Dunlap Cc: Chris Zankel Cc: Max Filippov Message-Id: <20230920052139.10570-16-rdunlap@infradead.org> Signed-off-by: Max Filippov

Merge tag 'powerpc-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2023-06-30T16:20:08+00:00

Pull powerpc updates from Michael Ellerman: - Extend KCSAN support to 32-bit and BookE. Add some KCSAN annotations - Make ELFv2 ABI the default for 64-bit big-endian kernel builds, and use the -mprofile-kernel option (kernel specific ftrace ABI) for big endian ELFv2 kernels - Add initial Dynamic Execution Control Register (DEXCR) support, and allow the ROP protection instructions to be used on Power 10 - Various other small features and fixes Thanks to Aditya Gupta, Aneesh Kumar K.V, Benjamin Gray, Brian King, Christophe Leroy, Colin Ian King, Dmitry Torokhov, Gaurav Batra, Jean Delvare, Joel Stanley, Marco Elver, Masahiro Yamada, Nageswara R Sastry, Nathan Chancellor, Naveen N Rao, Nayna Jain, Nicholas Piggin, Paul Gortmaker, Randy Dunlap, Rob Herring, Rohan McLure, Russell Currey, Sachin Sant, Timothy Pearson, Tom Rix, and Uwe Kleine-König. * tag 'powerpc-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (76 commits) powerpc: remove checks for binutils older than 2.25 powerpc: Fail build if using recordmcount with binutils v2.37 powerpc/iommu: TCEs are incorrectly manipulated with DLPAR add/remove of memory powerpc/iommu: Only build sPAPR access functions on pSeries powerpc: powernv: Annotate data races in opal events powerpc: Mark writes registering ipi to host cpu through kvm and polling powerpc: Annotate accesses to ipi message flags powerpc: powernv: Fix KCSAN datarace warnings on idle_state contention powerpc: Mark [h]ssr_valid accesses in check_return_regs_valid powerpc: qspinlock: Enforce qnode writes prior to publishing to queue powerpc: qspinlock: Mark accesses to qnode lock checks powerpc/powernv/pci: Remove last IODA1 defines powerpc/powernv/pci: Remove MVE code powerpc/powernv/pci: Remove ioda1 support powerpc: 52xx: Make immr_id DT match tables static powerpc: mpc512x: Remove open coded "ranges" parsing powerpc: fsl_soc: Use of_range_to_resource() for "ranges" parsing powerpc: fsl: Use of_property_read_reg() to parse "reg" powerpc: fsl_rio: Use of_range_to_resource() for "ranges" parsing macintosh: Use of_property_read_reg() to parse "reg" ...

xtensa: add asm-prototypes.h

2023-06-13T02:48:57+00:00

Move assembly source prototypes from xtensa_ksyms.c to asm/asm-prototypes.h, move corresponding EXPORT_SYMBOLs to the assembly sources and enable HAVE_ASM_MODVERSIONS for xtensa. Signed-off-by: Max Filippov

xtensa: only build __strncpy_user with CONFIG_ARCH_HAS_STRNCPY_FROM_USER

2023-06-13T02:48:57+00:00

__strncpy_user is only used when CONFIG_ARCH_HAS_STRNCPY_FROM_USER is enabled so don't build the source when it's off. Signed-off-by: Max Filippov

xtensa: drop bcopy implementation

2023-06-13T02:48:57+00:00

bcopy is not exported and there's no in-tree users of this function. Drop it. Signed-off-by: Max Filippov

xtensa: Remove 64 bits atomic builtins stubs

2023-06-09T13:29:51+00:00

The stubs were provided by commit 725aea873261 ("xtensa: enable KCSAN") to make linker happy allthought they are not meant to be used at all. KCSAN core has been fixed to not require them anymore on 32 bits architectures. Then they can be removed. Signed-off-by: Christophe Leroy Acked-by: Max Filippov Acked-by: Marco Elver Signed-off-by: Michael Ellerman Link: https://msgid.link/a6834980e58c5e2cdf25b3db061f34975de46437.1683892665.git.christophe.leroy@csgroup.eu

xtensa: add __bswap{si,di}2 helpers

2023-05-12T16:44:12+00:00

gcc-13 may generate calls for __bswap{si,di}2. This breaks the kernel build when optimization for size is selected. Add __bswap{si,di}2 helpers to fix that. Cc: stable@vger.kernel.org Fixes: 19c5699f9aff ("xtensa: don't link with libgcc") Signed-off-by: Max Filippov

xtensa: add __umulsidi3 helper

2022-12-07T00:21:26+00:00

xtensa gcc-13 has changed multiplication handling and may now use __umulsidi3 helper where it used to use __muldi3. As a result building the kernel with the new gcc may fail with the following error: linux/init/main.c:1287: undefined reference to `__umulsidi3' Fix the build by providing __umulsidi3 implementation for xtensa. Cc: stable@vger.kernel.org # 5.18+ Signed-off-by: Max Filippov

xtensa: enable KCSAN

2022-05-02T02:51:22+00:00

Prefix arch-specific barrier macros with '__' to make use of instrumented generic macros. Prefix arch-specific bitops with 'arch_' to make use of instrumented generic functions. Provide stubs for 64-bit atomics when building with KCSAN. Disable KCSAN instrumentation in arch/xtensa/boot. Signed-off-by: Max Filippov Acked-by: Marco Elver

xtensa: localize labels used in memmove

2022-05-02T02:51:20+00:00

Internal labels in the memmove implementation don't need to be visible, localize them by prefixing their names with '.L'. Signed-off-by: Max Filippov