en Copyright 2015 Java http://kernelsources.org:8080/source/history/linux/arch/alpha/include/asm/stacktrace.h#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/include/asm/stacktrace.h Wed, 21 Oct 2026 02:31:24 +0200 Linus Torvalds <torvalds@linux-foundation.org> http://kernelsources.org:8080/source/history/linux/arch/alpha/include/asm/stacktrace.h#83bd31c2840b3640ba08b7afac2908bbb19c4b2c alpha: enable GENERIC_ENTRYWire Alpha into the generic entry code for syscall entry/exit andreturn-to-user handling, while keeping the low-level PALcode return pathsAlpha-specific.Move most of the syscall entry/exit logic out of entSys and into C helpersbuilt around the generic entry API. Syscall entry now usessyscall_enter_from_user_mode(), records Alpha-local syscall metadata inthread_info, handles the ptrace/seccomp skip decision, and selects thesyscall table target in C. The final target call remains in entry.S soAlpha can preserve its existing syscall ABI and assembly syscall-tablewrappers.On return from syscalls, finish Alpha's r0/r19 result encoding andskipped-syscall restart handling in C before callingsyscall_exit_to_user_mode(). Non-syscall returns to user mode use aseparate alpha_exit_to_user_mode() helper, which disables interrupts,runs irqentry_exit_to_user_mode_prepare(), and then enters the commonexit_to_user_mode() path.Keep the remaining PALcode restore handling in assembly. In particular,kernel-mode returns still need Alpha-specific lockdep IRQ-state annotationbased on the saved processor status, while user-mode returns are handed tothe generic exit-to-user code.Add the generic-entry support bits needed by common code, includingthread_info.syscall_work, syscall trace support, ptrace sysemu requestnumbers, and arch_syscall_is_vdso_sigreturn().This has been tested by booting Alpha with GENERIC_ENTRY enabled, checkinglockdep IRQ-state accounting, running fork/clone-heavy package builds, andrunning the seccomp as well as strace test suites.Reviewed-by: Matt Turner <mattst88@gmail.com>Signed-off-by: Magnus Lindholm <linmag7@gmail.com>Link: https://lore.kernel.org/r/20260902184058.198679-2-linmag7@gmail.comSigned-off-by: Magnus Lindholm <linmag7@gmail.com> List of files: /linux/arch/alpha/include/asm/stacktrace.h Wed, 02 Sep 2026 20:38:56 +0200 Magnus Lindholm <linmag7@gmail.com>