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OvmfPkg/XenBusDxe: Add Grant Table functions.

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There are used to grant access of pages to other Xen domains.

This code originaly comes from the Xen Project, and more precisely from
MiniOS.

Change in V4:
- Add license to GrantTable.h

Change in V3:
- Add a comment about the use of the BAR of the device.

Change in V2:
- Adding locks
- Redo the file header
- Add functions comment
- Add license

Signed-off-by: Steven Smith <sos22@cam.ac.uk>
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16264 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Steven Smith
2014-10-29 06:50:14 +00:00
committed by jljusten
parent bba9d16231
commit 0fd142464f
4 changed files with 316 additions and 0 deletions
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2
OvmfPkg/XenBusDxe/XenBusDxe.inf
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@@ -38,6 +38,8 @@
XenHypercall.h
InterlockedCompareExchange16.c
InterlockedCompareExchange16.h
GrantTable.c
GrantTable.h
[Sources.IA32]
Ia32/hypercall.S