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Commit c05f1cfa authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen64: implement 64-bit update_descriptor 



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

Signed-off-by: default avatarJeremy 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: default avatarIngo Molnar <mingo@elte.hu>
parent 8a95408e

include/asm-x86/xen/hypercall.h

+9 −4
Original line number Diff line number Diff line
@@ -466,11 +466,16 @@ MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr, 
			struct desc_struct desc)

{

	mcl->op = __HYPERVISOR_update_descriptor;

	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

MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg)