From 1650c3e3043ac7e8f16bdfb746430a106e49c18f Mon Sep 17 00:00:00 2001 From: Wainer dos Santos Moschetta Date: Mon, 16 Dec 2019 16:14:35 -0300 Subject: [PATCH] python/qemu: accel: Add list_accel() method Since commit cbe6d6365a48 the command `qemu -accel help` returns the list of accelerators enabled in the QEMU binary. This adds the list_accel() method which return that same list. Signed-off-by: Wainer dos Santos Moschetta Message-Id: <20191216191438.93418-3-wainersm@redhat.com> Reviewed-by: Cleber Rosa Tested-by: Cleber Rosa Signed-off-by: Cleber Rosa --- python/qemu/accel.py | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/python/qemu/accel.py b/python/qemu/accel.py index cbeac10dd1..7395cee793 100644 --- a/python/qemu/accel.py +++ b/python/qemu/accel.py @@ -14,7 +14,11 @@ accelerators. # the COPYING file in the top-level directory. # +import logging import os +import subprocess + +LOG = logging.getLogger(__name__) # Mapping host architecture to any additional architectures it can # support which often includes its 32 bit cousin. @@ -23,6 +27,25 @@ ADDITIONAL_ARCHES = { "aarch64" : "armhf" } +def list_accel(qemu_bin): + """ + List accelerators enabled in the QEMU binary. + + @param qemu_bin (str): path to the QEMU binary. + @raise Exception: if failed to run `qemu -accel help` + @return a list of accelerator names. + """ + if not qemu_bin: + return [] + try: + out = subprocess.check_output([qemu_bin, '-accel', 'help'], + universal_newlines=True) + except: + LOG.debug("Failed to get the list of accelerators in %s", qemu_bin) + raise + # Skip the first line which is the header. + return [acc.strip() for acc in out.splitlines()[1:]] + def kvm_available(target_arch=None): host_arch = os.uname()[4] if target_arch and target_arch != host_arch: -- 2.11.4.GIT