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arm: xen: implement multicall hypercall support.

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As part of this make the usual change to xen_ulong_t in place of unsigned long.
This change has no impact on x86.

The Linux definition of struct multicall_entry.result differs from the Xen
definition, I think for good reasons, and used a long rather than an unsigned
long. Therefore introduce a xen_long_t, which is a long on x86 architectures
and a signed 64-bit integer on ARM.

Use uint32_t nr_calls on x86 for consistency with the ARM definition.

Build tested on amd64 and i386 builds. Runtime tested on ARM.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Ian Campbell 2014-04-17 13:57:37 +01:00 • committed by David Vrabel
parent 1aae31c830
commit 5e40704ed2
7 changed files with 12 additions and 9 deletions
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6
include/xen/interface/xen.h
View file

@ -275,9 +275,9 @@ DEFINE_GUEST_HANDLE_STRUCT(mmu_update);
* NB. The fields are natural register size for this architecture.
*/
struct multicall_entry {
unsigned long op;
long result;
unsigned long args[6];
xen_ulong_t op;
xen_long_t result;
xen_ulong_t args[6];
};
DEFINE_GUEST_HANDLE_STRUCT(multicall_entry);