Christophe Leroy <christophe.le...@c-s.fr> writes: > On 03/20/2020 02:12 AM, Michael Ellerman wrote: >> Christophe Leroy <christophe.le...@c-s.fr> writes: >>> Move ADV_DEBUG_REGS functions out of ptrace.c, into >>> ptrace-adv.c and ptrace-noadv.c >>> >>> Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr> >>> --- >>> v4: Leave hw_breakpoint.h for ptrace.c >>> --- >>> arch/powerpc/kernel/ptrace/Makefile | 4 + >>> arch/powerpc/kernel/ptrace/ptrace-adv.c | 468 ++++++++++++++++ >>> arch/powerpc/kernel/ptrace/ptrace-decl.h | 5 + >>> arch/powerpc/kernel/ptrace/ptrace-noadv.c | 236 ++++++++ >>> arch/powerpc/kernel/ptrace/ptrace.c | 650 ---------------------- >>> 5 files changed, 713 insertions(+), 650 deletions(-) >>> create mode 100644 arch/powerpc/kernel/ptrace/ptrace-adv.c >>> create mode 100644 arch/powerpc/kernel/ptrace/ptrace-noadv.c >> >> This is somehow breaking the ptrace-hwbreak selftest on Power8: >> >> test: ptrace-hwbreak >> tags: git_version:v5.6-rc6-892-g7a285a6067d6 >> PTRACE_SET_DEBUGREG, WO, len: 1: Ok >> PTRACE_SET_DEBUGREG, WO, len: 2: Ok >> PTRACE_SET_DEBUGREG, WO, len: 4: Ok >> PTRACE_SET_DEBUGREG, WO, len: 8: Ok >> PTRACE_SET_DEBUGREG, RO, len: 1: Ok >> PTRACE_SET_DEBUGREG, RO, len: 2: Ok >> PTRACE_SET_DEBUGREG, RO, len: 4: Ok >> PTRACE_SET_DEBUGREG, RO, len: 8: Ok >> PTRACE_SET_DEBUGREG, RW, len: 1: Ok >> PTRACE_SET_DEBUGREG, RW, len: 2: Ok >> PTRACE_SET_DEBUGREG, RW, len: 4: Ok >> PTRACE_SET_DEBUGREG, RW, len: 8: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, WO, len: 6: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RO, len: 6: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RW, len: 6: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW UNALIGNED, WO, len: 6: Ok >> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW UNALIGNED, RO, len: 6: Fail >> failure: ptrace-hwbreak >> >> I haven't had time to work out why yet. >> > > A (big) part of commit c3f68b0478e7 ("powerpc/watchpoint: Fix ptrace > code that muck around with address/len") was lost during rebase. > > I'll send a fix, up to you to squash it in or commit it as is.
Thanks. cheers