Hi! Since Linus hated on cmpxchg_double(), a few patches to get rid of it, as proposed here: https://lkml.kernel.org/r/Y2U3WdU61FvYlpUh@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx These patches are based on 6.2.0-rc6 + cryptodev-2.6, but also apply to next/master. Available here: git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git core/wip-u128 New since v1: - rebaed on Eric's ghash cleanups (hence the cryptodev-2.6 dependency) - rebased on Heiko's s390/cpum_sf CDSG patch - fixed up a bunch of arch code - fixed up the inline asm to use 'u128 *' mem argument so the compiler knows how wide the modification is. - reworked the percpu thing to use union based type-punning instead of _Generic() based casts. --- Documentation/core-api/this_cpu_ops.rst | 2 - arch/arm64/include/asm/atomic_ll_sc.h | 56 ++++++----- arch/arm64/include/asm/atomic_lse.h | 39 ++++---- arch/arm64/include/asm/cmpxchg.h | 48 +++------- arch/arm64/include/asm/percpu.h | 31 ++++-- arch/s390/include/asm/cmpxchg.h | 32 ++----- arch/s390/include/asm/cpu_mf.h | 2 +- arch/s390/include/asm/percpu.h | 35 ++++--- arch/s390/kernel/perf_cpum_sf.c | 22 ++--- arch/x86/include/asm/cmpxchg.h | 25 ----- arch/x86/include/asm/cmpxchg_32.h | 2 +- arch/x86/include/asm/cmpxchg_64.h | 54 ++++++++++- arch/x86/include/asm/percpu.h | 97 +++++++++++-------- drivers/iommu/amd/amd_iommu_types.h | 9 +- drivers/iommu/amd/iommu.c | 10 +- drivers/iommu/intel/irq_remapping.c | 8 +- include/asm-generic/percpu.h | 62 ++---------- include/crypto/b128ops.h | 14 +-- include/linux/atomic/atomic-arch-fallback.h | 95 ++++++++++++++++++- include/linux/atomic/atomic-instrumented.h | 88 ++++++++++++++--- include/linux/dmar.h | 125 ++++++++++++------------ include/linux/percpu-defs.h | 46 +++------ include/linux/slub_def.h | 12 ++- include/linux/types.h | 5 + include/uapi/linux/types.h | 4 + lib/crypto/curve25519-hacl64.c | 2 - lib/crypto/poly1305-donna64.c | 2 - mm/slab.h | 45 ++++++++- mm/slub.c | 142 +++++++++++++++++----------- scripts/atomic/gen-atomic-fallback.sh | 4 +- scripts/atomic/gen-atomic-instrumented.sh | 21 ++-- 31 files changed, 645 insertions(+), 494 deletions(-)
