On 2026-09-02 09:27, Stian Halseth wrote: > This adds SECCOMP_FILTER support for sparc64. > > The arch prerequisites have been in place for years, so patch 1 is > mostly about the missing piece: letting seccomp veto a syscall, and > returning to user space with the return value the seccomp core set in > pt_regs rather than the -ENOSYS the assembler stubs used to force on > any denied syscall. Patch 2 teaches the seccomp_bpf selftest to > drive sparc64's registers. > > Tested on an UltraSPARC T4-1 (sun4v): > > - tools/testing/selftests/seccomp/seccomp_bpf: 95 passed, 0 failed, > 16 skipped (uprobes and other optional features) > - libseccomp with its pending SPARC support (libseccomp PR #471) > passes its full suite, 5190 of 5190, including the live tests > that require kernel SECCOMP_FILTER > - docker containers run confined by the default profile, and a > custom SCMP_ACT_ERRNO profile denies as expected > > The libseccomp side is https://github.com/seccomp/libseccomp/pull/471, > and the tracking issue is https://github.com/sparclinux/issues/issues/11. > > v2: drop the local regs-struct definition in the selftest in favour of > PTRACE_GETREGS64/PTRACE_SETREGS64 and the uapi struct pt_regs > (Kees Cook); patch 1 unchanged. > > Stian Halseth (2): > sparc64: add seccomp filter support > selftests/seccomp: add sparc64 support > > arch/sparc/Kconfig | 2 +- > arch/sparc/include/asm/seccomp.h | 15 ++++++++ > arch/sparc/include/asm/syscall.h | 11 +++--- > arch/sparc/kernel/entry.h | 2 +- > arch/sparc/kernel/ptrace_64.c | 28 ++++++++++----- > arch/sparc/kernel/syscalls.S | 28 +++++++++++---- > tools/testing/selftests/seccomp/seccomp_bpf.c | 36 ++++++++++++++++++++ > 7 files changed, 99 insertions(+), 23 deletions(-) >
Looks good to me, and selftests runs fine for me as well. Thanks! We have a soon incoming patch set adding support for sparc32 as well on top of this. Kees, are you ok with the selftest changes being taken through my tree? Cheers, Andreas
