def _close_device(self):
if hasattr(self, "bar2"):
try: c.munmap(self.bar2, 64 * 1024)
except: pass
if hasattr(self, "barfd2"):
try: os.close(self.barfd2)
except: pass
c.munmap(self.bar0, 64 * 1024)
os.close(self.barfd)
os.close(self.cfgfd)
def _close_device(self):
if hasattr(self, "bar2"):
try: c.munmap(self.bar2, 64 * 1024)
except: pass
if hasattr(self, "barfd2"):
try: os.close(self.barfd2)
except: pass
c.munmap(self.bar0, 64 * 1024)
os.close(self.barfd)
os.close(self.cfgfd)
def __attempt_hugetlb(self):
flags = c.MAP_ANONYMOUS | c.MAP_PRIVATE | c.MAP_LOCKED | c.MAP_HUGETLB
flags |= (21 << c.MAP_HUGE_SHIFT)
prot = c.PROT_READ | c.PROT_WRITE
sz = 2048 * 1024
a = c.mmap(0, sz, prot, flags, -1, 0)
if a != c.MAP_FAILED:
print "[+] huge pages available"
c.munmap(a, sz)
self._hugetlb_available = True
self._hugetlb_pgsz = sz
else:
print "[-] huge pages unavailable"
self._hugetlb_available = False
def __attempt_hugetlb(self):
try:
with open("/proc/sys/vm/nr_hugepages", "r+") as hp:
a = int(hp.read())
if a < 20:
hp.seek(0)
hp.write('20')
except: pass
flags = c.MAP_ANONYMOUS | c.MAP_PRIVATE | c.MAP_LOCKED | c.MAP_HUGETLB | c.MAP_32BIT
flags |= (21 << c.MAP_HUGE_SHIFT)
prot = c.PROT_READ | c.PROT_WRITE
sz = 2048 * 1024
a = c.mmap(0, sz, prot, flags, -1, 0)
if a != c.MAP_FAILED:
print "[+] huge pages available"
c.munmap(a, sz)
self._hugetlb_available = True
self._hugetlb_pgsz = sz
else:
print "[-] huge pages unavailable"
self._hugetlb_available = False
def __attempt_hugetlb(self):
try:
with open("/proc/sys/vm/nr_hugepages", "r+") as hp:
a = int(hp.read())
if a < 20:
hp.seek(0)
hp.write('20')
except:
pass
flags = c.MAP_ANONYMOUS | c.MAP_PRIVATE | c.MAP_LOCKED | c.MAP_HUGETLB | c.MAP_32BIT
flags |= (21 << c.MAP_HUGE_SHIFT)
prot = c.PROT_READ | c.PROT_WRITE
sz = 2048 * 1024
a = c.mmap(0, sz, prot, flags, -1, 0)
if a != c.MAP_FAILED:
print "[+] huge pages available"
c.munmap(a, sz)
self._hugetlb_available = True
self._hugetlb_pgsz = sz
else:
print "[-] huge pages unavailable"
self._hugetlb_available = False
def _dev_close(self):
c.munmap(self.bar0, self.bar0_sz)
os.close(self.device)
ioctl(self.group, c.VFIO_GROUP_UNSET_CONTAINER, struct.pack("I", self.container))
os.close(self.group)
