• aliguori's avatar
    Fix IO performance regression in sparc · 9e472e10
    aliguori authored
    Replace signalfd with signal handler/pipe.  There is no way to interrupt
    the CPU execution loop when a file descriptor becomes readable.  This
    results in a large performance regression in sparc emulation during
    This patch switches us to signal handler/pipe which was originally
    suggested by Ian Jackson.  The signal handler lets us interrupt the
    CPU emulation loop while the write to a pipe lets us avoid the
    select/signal race condition.
    Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
    git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5451 c046a42c-6fe2-441c-8c8c-71466251a162
vl.c 250 KB