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    [S390] move sie code to entry.S · 603d1a50
    Martin Schwidefsky 提交于
    The entry to / exit from sie has subtle dependencies to the first level
    interrupt handler. Move the sie assembler code to entry64.S and replace
    the SIE_HOOK callback with a test and the new _TIF_SIE bit.
    In addition this patch fixes several problems in regard to the check for
    the_TIF_EXIT_SIE bits. The old code checked the TIF bits before executing
    the interrupt handler and it only modified the instruction address if it
    pointed directly to the sie instruction. In both cases it could miss
    a TIF bit that normally would cause an exit from the guest and would
    reenter the guest context.
    Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
    603d1a50
entry64.S 31.7 KB