#!/usr/bin/env python

import os
from optparse import OptionParser

parser = OptionParser()
parser.add_option("-v", "--verbose", dest="verbose",
		   help="print verbose messages. Try -vv, -vvv for \
			more verbose messages", action="count")

(options, args) = parser.parse_args()

verbose = 0
if options.verbose is not None:
	verbose = options.verbose

vmbus_sys_path = '/sys/bus/vmbus/devices'
if not os.path.isdir(vmbus_sys_path):
	print "%s doesn't exist: exiting..." % vmbus_sys_path
	exit(-1)

vmbus_dev_dict = {
	'{0e0b6031-5213-4934-818b-38d90ced39db}' : '[Operating system shutdown]',
	'{9527e630-d0ae-497b-adce-e80ab0175caf}' : '[Time Synchronization]',
	'{57164f39-9115-4e78-ab55-382f3bd5422d}' : '[Heartbeat]',
	'{a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}' : '[Data Exchange]',
	'{35fa2e29-ea23-4236-96ae-3a6ebacba440}' : '[Backup (volume checkpoint)]',
	'{34d14be3-dee4-41c8-9ae7-6b174977c192}' : '[Guest services]',
	'{525074dc-8985-46e2-8057-a307dc18a502}' : '[Dynamic Memory]',
	'{cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}' : 'Synthetic mouse',
	'{f912ad6d-2b17-48ea-bd65-f927a61c7684}' : 'Synthetic keyboard',
	'{da0a7802-e377-4aac-8e77-0558eb1073f8}' : 'Synthetic framebuffer adapter',
	'{f8615163-df3e-46c5-913f-f2d2f965ed0e}' : 'Synthetic network adapter',
	'{32412632-86cb-44a2-9b5c-50d1417354f5}' : 'Synthetic IDE Controller',
	'{ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}' : 'Synthetic SCSI Controller',
	'{2f9bcc4a-0069-4af3-b76b-6fd0be528cda}' : 'Synthetic fiber channel adapter',
	'{8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501}' : 'Synthetic RDMA adapter',
	'{44c4f61d-4444-4400-9d52-802e27ede19f}' : 'PCI Express pass-through',
	'{276aacf4-ac15-426c-98dd-7521ad3f01fe}' : '[Reserved system device]',
	'{f8e65716-3cb3-4a06-9a60-1889c5cccab5}' : '[Reserved system device]',
	'{3375baf4-9e15-4b30-b765-67acb10d607b}' : '[Reserved system device]',
}

def get_vmbus_dev_attr(dev_name, attr):
	try:
		f = open('%s/%s/%s' % (vmbus_sys_path, dev_name, attr), 'r')
		lines = f.readlines()
		f.close()
	except IOError:
		lines = []

	return lines

class VMBus_Dev:
	pass


vmbus_dev_list = []

for f in os.listdir(vmbus_sys_path):
	vmbus_id = get_vmbus_dev_attr(f, 'id')[0].strip()
	class_id = get_vmbus_dev_attr(f, 'class_id')[0].strip()
	device_id = get_vmbus_dev_attr(f, 'device_id')[0].strip()
	dev_desc = vmbus_dev_dict.get(class_id, 'Unknown')

	chn_vp_mapping = get_vmbus_dev_attr(f, 'channel_vp_mapping')
	chn_vp_mapping = [c.strip() for c in chn_vp_mapping]
	chn_vp_mapping = sorted(chn_vp_mapping,
		key = lambda c : int(c.split(':')[0]))

	chn_vp_mapping = ['\tRel_ID=%s, target_cpu=%s' %
				(c.split(':')[0], c.split(':')[1])
					for c in chn_vp_mapping]
	d = VMBus_Dev()
	d.sysfs_path = '%s/%s' % (vmbus_sys_path, f)
	d.vmbus_id = vmbus_id
	d.class_id = class_id
	d.device_id = device_id
	d.dev_desc = dev_desc
	d.chn_vp_mapping = '\n'.join(chn_vp_mapping)
	if d.chn_vp_mapping:
		d.chn_vp_mapping += '\n'

	vmbus_dev_list.append(d)


vmbus_dev_list  = sorted(vmbus_dev_list, key = lambda d : int(d.vmbus_id))

format0 = '%2s: %s'
format1 = '%2s: Class_ID = %s - %s\n%s'
format2 = '%2s: Class_ID = %s - %s\n\tDevice_ID = %s\n\tSysfs path: %s\n%s'

for d in vmbus_dev_list:
	if verbose == 0:
		print ('VMBUS ID ' + format0) % (d.vmbus_id, d.dev_desc)
	elif verbose == 1:
		print ('VMBUS ID ' + format1) %	\
			(d.vmbus_id, d.class_id, d.dev_desc, d.chn_vp_mapping)
	else:
		print ('VMBUS ID ' + format2) % \
			(d.vmbus_id, d.class_id, d.dev_desc, \
			d.device_id, d.sysfs_path, d.chn_vp_mapping)
tools/arch/parisc?h=nds-private-remove&amp;id=98f2b09226758bcd416b023c9216597cc9727e60&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
ion><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;</td><td class='right'>2017-02-01 17:45:02 +0000</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-02-01 21:17:49 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtrdma/verbs.c?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>c8f325a59cfc718d13a50fbc746ed9b415c25e92</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/sunrpc/xprtrdma/verbs.c?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>d53fbdac9d0781e39a13b2ac6b2bd258cf3b4140</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/sunrpc/xprtrdma/verbs.c?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>net/sunrpc/xprtrdma/verbs.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sunrpc/xprtrdma/verbs.c?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>bf29bddf0417a4783da3b24e8c9e017ac649326f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/sunrpc/xprtrdma/verbs.c?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92&amp;id2=bf29bddf0417a4783da3b24e8c9e017ac649326f'>diff</a>)</td></tr></table>
<div class='commit-subject'>efi/fdt: Avoid FDT manipulation after ExitBootServices()</div><div class='commit-msg'>Some AArch64 UEFI implementations disable the MMU in ExitBootServices(),
after which unaligned accesses to RAM are no longer supported.

Commit:

  abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")

fixed an issue in the memory map handling of the stub FDT code, but
inadvertently created an issue with such firmware, by moving some
of the FDT manipulation to after the invocation of ExitBootServices().

Given that the stub's libfdt implementation uses the ordinary, accelerated
string functions, which rely on hardware handling of unaligned accesses,
manipulating the FDT with the MMU off may result in alignment faults.

So fix the situation by moving the update_fdt_memmap() call into the
callback function invoked by efi_exit_boot_services() right before it
calls the ExitBootServices() UEFI service (which is arguably a better
place for it anyway)

Note that disabling the MMU in ExitBootServices() is not compliant with
the UEFI spec, and carries great risk due to the fact that switching from
cached to uncached memory accesses halfway through compiler generated code
(i.e., involving a stack) can never be done in a way that is architecturally
safe.

Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
Signed-off-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Tested-by: Riku Voipio &lt;riku.voipio@linaro.org&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Cc: mark.rutland@arm.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>Diffstat</a> (limited to 'net/sunrpc/xprtrdma/verbs.c')</div><table summary='diffstat' class='diffstat'>