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xen: use iret instruction all the time

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Change iret implementation to not be dependent on direct-access vcpu
structure.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge
2008-04-17 17:40:51 +02:00
committed by Ingo Molnar
parent c9cf39ae64
commit 81e103f1f1
3 changed files with 5 additions and 11 deletions
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3
arch/x86/xen/enlighten.c
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@@ -890,7 +890,6 @@ void __init xen_setup_vcpu_info_placement(void)
pv_irq_ops.irq_disable = xen_irq_disable_direct;
pv_irq_ops.irq_enable = xen_irq_enable_direct;
pv_mmu_ops.read_cr2 = xen_read_cr2_direct;
pv_cpu_ops.iret = xen_iret_direct;
}
}
@@ -994,7 +993,7 @@ static const struct pv_cpu_ops xen_cpu_ops __initdata = {
.read_tsc = native_read_tsc,
.read_pmc = native_read_pmc,
.iret = (void *)&hypercall_page[__HYPERVISOR_iret],
.iret = xen_iret,
.irq_enable_syscall_ret = NULL, /* never called */
.load_tr_desc = paravirt_nop,