David Vrabel 120b649bd2 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: Jiri Slaby <jslaby@suse.cz>		2016-04-11 16:43:45 +02:00
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hvm	Feature:	2012-10-12 22:20:28 +09:00
io	xen: Add RING_COPY_REQUEST()	2016-04-11 16:43:45 +02:00
callback.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
elfnote.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
event_channel.h	xen: Add EVTCHNOP_reset in Xen interface header files.	2012-12-17 21:58:05 -05:00
features.h	xen/arm: get privilege status	2012-08-08 17:20:18 +00:00
grant_table.h	xen: grant: use xen_pfn_t type for frame_list.	2012-10-19 15:17:55 -04:00
memory.h	xen: implement updated XENMEM_add_to_physmap_range ABI	2013-02-19 22:01:55 -05:00
physdev.h	xen-pciback: notify hypervisor about devices intended to be assigned to guests	2013-03-22 10:20:55 -04:00
platform.h	xen / ACPI: notify xen when reduced hardware sleep is available	2013-07-31 14:22:35 +02:00
sched.h	x86/xen: Support kexec/kdump in HVM guests by doing a soft reset	2015-10-28 16:37:16 +01:00
vcpu.h	xen: Support 64-bit PV guest receiving NMIs	2013-08-09 10:55:47 -04:00
version.h	xen/acpi: Move the xen_running_on_version_or_later function.	2012-11-28 14:39:31 -05:00
xen-mca.h	xen/mce: Add mcelog support for Xen platform	2012-07-19 15:51:36 -04:00
xen.h	xen: event channel arrays are xen_ulong_t and not unsigned long	2013-02-20 08:45:07 -05:00
xencomm.h	xen: import arch generic part of xencomm	2008-04-24 23:57:32 +02:00