Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jeremy Fitzhardinge |
129 |
72.07% |
7 |
31.82% |
| Peter Zijlstra |
15 |
8.38% |
3 |
13.64% |
| Thomas Gleixner |
11 |
6.15% |
2 |
9.09% |
| Juergen Gross |
11 |
6.15% |
4 |
18.18% |
| Vitaly Kuznetsov |
3 |
1.68% |
1 |
4.55% |
| Adrian Bunk |
3 |
1.68% |
1 |
4.55% |
| Randy Dunlap |
3 |
1.68% |
1 |
4.55% |
| Isaku Yamahata |
2 |
1.12% |
1 |
4.55% |
| Daniel Kiper |
1 |
0.56% |
1 |
4.55% |
| Greg Kroah-Hartman |
1 |
0.56% |
1 |
4.55% |
| Total |
179 |
|
22 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/hardirq.h>
#include <asm/x86_init.h>
#include <xen/interface/xen.h>
#include <xen/interface/sched.h>
#include <xen/interface/vcpu.h>
#include <xen/features.h>
#include <xen/events.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
#include "xen-ops.h"
/*
* Force a proper event-channel callback from Xen after clearing the
* callback mask. We do this in a very simple manner, by making a call
* down into Xen. The pending flag will be checked by Xen on return.
*/
noinstr void xen_force_evtchn_callback(void)
{
(void)HYPERVISOR_xen_version(0, NULL);
}
static noinstr void xen_safe_halt(void)
{
/* Blocking includes an implicit local_irq_enable(). */
if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0)
BUG();
}
static void xen_halt(void)
{
if (irqs_disabled())
HYPERVISOR_vcpu_op(VCPUOP_down,
xen_vcpu_nr(smp_processor_id()), NULL);
else
xen_safe_halt();
}
static const typeof(pv_ops) xen_irq_ops __initconst = {
.irq = {
/* Initial interrupt flag handling only called while interrupts off. */
.save_fl = __PV_IS_CALLEE_SAVE(paravirt_ret0),
.irq_disable = __PV_IS_CALLEE_SAVE(paravirt_nop),
.irq_enable = __PV_IS_CALLEE_SAVE(BUG_func),
.safe_halt = xen_safe_halt,
.halt = xen_halt,
},
};
void __init xen_init_irq_ops(void)
{
pv_ops.irq = xen_irq_ops.irq;
x86_init.irqs.intr_init = xen_init_IRQ;
}