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xen64: implement 64-bit update_descriptor 

64-bit hypercall interface can pass a maddr in one argument rather
than splitting it.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Jeremy Fitzhardinge 2008-07-08 15:07:11 -07:00 committed by Ingo Molnar
parent 8a95408e18
commit c05f1cfaba
1 changed files with 9 additions and 4 deletions
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13
include/asm-x86/xen/hypercall.h
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@ -466,10 +466,15 @@ MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
struct desc_struct desc)
{
mcl->op = __HYPERVISOR_update_descriptor;
mcl->args[0] = maddr;
mcl->args[1] = maddr >> 32;
mcl->args[2] = desc.a;
mcl->args[3] = desc.b;
if (sizeof(maddr) == sizeof(long)) {
mcl->args[0] = maddr;
mcl->args[1] = *(unsigned long *)&desc;
} else {
mcl->args[0] = maddr;
mcl->args[1] = maddr >> 32;
mcl->args[2] = desc.a;
mcl->args[3] = desc.b;
}
}
static inline void