en Copyright 2015 Java http://kernelsources.org:8080/source/history/linux/arch/alpha/lib/tishift.c#742f62b63904cdc20a364a49d2861e32464a0af7 Merge tag 'alpha-for-v7.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/lindholm/alphaPull alpha updates from Magnus Lindholm: "This completes Alpha's conversion to GENERIC_ENTRY and enables a range of kernel features through Kconfig updates, including UBSAN, gcov, kmemleak, page-table checking, fast GUP and sparse IRQs. It includes TLB and MMU context fixes prompted by glibc test-suite failures, HugeTLB support for 64KB, 512KB and 4MB pages, and fixes for poisoned-page faults and page-table checking. Machine-check handling is improved on Tsunami platforms, with bounded EV6 logout decoding, Clipper environmental event reporting and safer firmware console-log scanning. Other changes add self-extracting compressed kernels with support for all kernel compression formats, Alpha-specific XZ tuning, perf register and user-stack sampling, and Alpha support in the seccomp selftests. The series also fixes user stack-pointer reporting and IRQ entry ordering, adds 128-bit shift helpers, cleans up linker sections, and updates Kconfig help"* tag 'alpha-for-v7.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/lindholm/alpha: (57 commits) alpha: add bounded Clipper console-log scanning alpha: decode Clipper environmental events alpha: decode and acknowledge Tsunami system machine checks alpha: bound EV6 logout decoding by the processor area alpha: describe the Tsunami system machine check frame alpha: move Tsunami machine check handling to err_tsunami.c alpha: fill in pc for software event samples alpha: add HAVE_PERF_REGS and HAVE_PERF_USER_STACK_DUMP support alpha: use user_stack_pointer() in KSTK_ESP() and dump_elf_thread() alpha: stop storing the user stack pointer in pt_regs alpha: fix stale user_stack_pointer() selftests/seccomp: add Alpha support to seccomp_bpf alpha: do not skip TLB shootdown IPIs for kthread-borrowed mms alpha: do not clear remote MMU contexts in migrate_flush_tlb_page() alpha: invalidate the local context in flush_icache_user_page() alpha: invalidate the local context in flush_tlb_mm() alpha: fix the local TLB invalidate in the UP flush_tlb_page() alpha: fix the local TLB invalidate in flush_tlb_page() alpha: invalidate the local context in flush_tlb_page() alpha: only use a targeted tbi() when the target mm is really current ... List of files: /linux/arch/alpha/lib/tishift.c Wed, 21 Oct 2026 02:31:24 +0200 Linus Torvalds <torvalds@linux-foundation.org> http://kernelsources.org:8080/source/history/linux/arch/alpha/lib/tishift.c#3382beeda2e115f9f9a76019f294f328b7e75756 alpha: select ARCH_SUPPORTS_INT128gcc supports __int128 on Alpha, and the 64x64 to 128-bit multiply thatthe users in the scheduler and in lib/ care about maps onto mulq/umulhrather than an out-of-line libgcc helper.Variable 128-bit shifts are another matter. gcc open-codes them whenoptimizing for speed, but with CONFIG_CC_OPTIMIZE_FOR_SIZE=y it calls thelibgcc routines __ashlti3, __ashrti3 and __lshrti3 instead. The kerneldoes not link against libgcc, so provide the three helpers in C, as s390does, and export them for modules. They are built into the kernel properrather than lib.a so the exports are present even when nothing built inreferences them. Like the s390 versions they are marked noinstr, sincethe compiler may emit calls to them from noinstr code.Gate the select on CC_HAS_INT128 as the other 64-bit architectures do.Assisted-by: Claude:claude-opus-5-5Signed-off-by: Matt Turner <mattst88@gmail.com>Tested-by: Magnus Lindholm <linmag7@gmail.com>Reviewed-by: Magnus Lindholm <linmag7@gmail.com>Link: https://lore.kernel.org/r/20261017174007.695344-1-mattst88@gmail.comSigned-off-by: Magnus Lindholm <linmag7@gmail.com> List of files: /linux/arch/alpha/lib/tishift.c Sat, 17 Oct 2026 19:40:07 +0200 Matt Turner <mattst88@gmail.com>