David Vrabel 454d5d882c xen: Add RING_COPY_REQUEST() ... Using RING_GET_REQUEST() on a shared ring is easy to use incorrectly (i.e., by not considering that the other end may alter the data in the shared ring while it is being inspected). Safe usage of a request generally requires taking a local copy. Provide a RING_COPY_REQUEST() macro to use instead of RING_GET_REQUEST() and an open-coded memcpy(). This takes care of ensuring that the copy is done correctly regardless of any possible compiler optimizations. Use a volatile source to prevent the compiler from reordering or omitting the copy. This is part of XSA155. CC: stable@vger.kernel.org Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>		2015-12-18 10:00:17 -05:00
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interface	xen: Add RING_COPY_REQUEST()	2015-12-18 10:00:17 -05:00
acpi.h
balloon.h	xen/balloon: use hotplugged pages for foreign mappings etc.	2015-10-23 14:20:05 +01:00
events.h	xen/events: Support event channel rebind on ARM	2015-08-20 12:24:15 +01:00
features.h
grant_table.h	xen/grant-table: Add an helper to iterate over a specific number of grants	2015-10-23 14:20:46 +01:00
hvc-console.h
hvm.h
page.h	xen: Add Xen specific page definition	2015-10-23 14:20:33 +01:00
platform_pci.h
swiotlb-xen.h
tmem.h
xen-ops.h	xen/privcmd: Further s/MFN/GFN/ clean-up	2015-09-08 18:03:54 +01:00
xen.h
xenbus_dev.h
xenbus.h	xen/xenbus: Rename *RING_PAGE* to *RING_GRANT*	2015-10-23 14:20:46 +01:00