• Alex Bennée's avatar
    qom/cpu: move tlb_flush to cpu_common_reset · 1f5c00cf
    Alex Bennée authored
    It is a common thing amongst the various cpu reset functions want to
    flush the SoftMMU's TLB entries. This is done either by calling
    tlb_flush directly or by way of a general memset of the CPU
    structure (sometimes both).
    This moves the tlb_flush call to the common reset function and
    additionally ensures it is only done for the CONFIG_SOFTMMU case and
    when tcg is enabled.
    In some target cases we add an empty end_of_reset_fields structure to the
    target vCPU structure so have a clear end point for any memset which
    is resetting value in the structure before CPU_COMMON (where the TLB
    structures are).
    While this is a nice clean-up in general it is also a precursor for
    changes coming to cputlb for MTTCG where the clearing of entries
    can't be done arbitrarily across vCPUs. Currently the cpu_reset
    function is usually called from the context of another vCPU as the
    architectural power up sequence is run. By using the cputlb API
    functions we can ensure the right behaviour in the future.
    Signed-off-by: 's avatarAlex Bennée <alex.bennee@linaro.org>
    Reviewed-by: 's avatarRichard Henderson <rth@twiddle.net>
    Reviewed-by: 's avatarDavid Gibson <david@gibson.dropbear.id.au>
cpu.c 5.52 KB