• Michael Ellerman's avatar
    Revert "powerpc/tm: Abort syscalls in active transactions" · 68fc378c
    Michael Ellerman authored
    This reverts commit feba4036.
    
    Although the principle of this change is good, the implementation has a
    few issues.
    
    Firstly we can sometimes fail to abort a syscall because r12 may have
    been clobbered by C code if we went down the virtual CPU accounting
    path, or if syscall tracing was enabled.
    
    Secondly we have decided that it is safer to abort the syscall even
    earlier in the syscall entry path, so that we avoid the syscall tracing
    path when we are transactional.
    
    So that we have time to thoroughly test those changes we have decided to
    revert this for this merge window and will merge the fixed version in
    the next window.
    
    NB. Rather than reverting the selftest we just drop tm-syscall from
    TEST_PROGS so that it's not run by default.
    
    Fixes: feba4036 ("powerpc/tm: Abort syscalls in active transactions")
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    68fc378c
Makefile 192 Bytes