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xen64: register callbacks in arch-independent way

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Use callback_op hypercall to register callbacks in a 32/64-bit
independent way (64-bit doesn't need a code segment, but that detail
is hidden in XEN_CALLBACK).

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>
This commit is contained in:
Jeremy Fitzhardinge
2008-07-08 15:07:02 -07:00
committed by Ingo Molnar
parent 952d1d7055
commit 88459d4c7e
2 changed files with 29 additions and 10 deletions
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12
include/asm-x86/xen/hypercall.h
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@@ -226,6 +226,7 @@ HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp)
return _hypercall2(int, stack_switch, ss, esp);
}
#ifdef CONFIG_X86_32
static inline int
HYPERVISOR_set_callbacks(unsigned long event_selector,
unsigned long event_address,
@@ -236,6 +237,17 @@ HYPERVISOR_set_callbacks(unsigned long event_selector,
event_selector, event_address,
failsafe_selector, failsafe_address);
}
#else /* CONFIG_X86_64 */
static inline int
HYPERVISOR_set_callbacks(unsigned long event_address,
unsigned long failsafe_address,
unsigned long syscall_address)
{
return _hypercall3(int, set_callbacks,
event_address, failsafe_address,
syscall_address);
}
#endif /* CONFIG_X86_{32,64} */
static inline int
HYPERVISOR_callback_op(int cmd, void *arg)