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David Vrabel f75855ceef xen: Add RING_COPY_REQUEST() ... commit 454d5d882c upstream. 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. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com>		History 2016-01-25 10:43:42 +00:00
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blkif.h	xen blkif.h: fix comment typo in discard-alignment	2014-05-28 14:17:30 -04:00
console.h	xen: Add Xen interface header files	2007-07-18 08:47:42 -07:00
fbif.h	xen pvfb: Dynamic mode support (screen resizing)	2008-05-27 10:11:36 +02:00
kbdif.h	xen pvfb: Pointer z-axis (mouse wheel) support	2008-05-27 10:11:36 +02:00
netif.h	xen-net{back, front}: Document multi-queue feature in netif.h	2014-06-04 14:48:17 -07:00
pciif.h	xen-pcifront: Xen PCI frontend driver.	2010-10-18 10:49:37 -04:00
protocols.h	ia64/xen: Remove Xen support for ia64	2013-12-10 16:11:07 -08:00
ring.h	xen: Add RING_COPY_REQUEST()	2016-01-25 10:43:42 +00:00
tpmif.h	drivers/tpm: add xen tpmfront interface	2013-08-09 10:57:06 -04:00
xenbus.h	xenbus: Xen paravirtualised PCI hotplug support.	2010-10-18 10:49:35 -04:00
xs_wire.h	xen/pv-on-hvm kexec: shutdown watches from old kernel	2012-07-19 15:52:02 -04:00