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xen: suspend and resume system devices when running PVHVM

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Otherwise we fail to properly suspend/resume all of the emulated devices.

Something between 2.6.38-rc2 and rc3 appears to have exposed this
issue, but it's always been wrong not to do this.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
This commit is contained in:
Ian Campbell 2011-02-17 10:31:20 +00:00
parent 100b33c8bd
commit 8dd38383a5
1 changed files with 10 additions and 0 deletions
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10
drivers/xen/manage.c
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@ -37,11 +37,19 @@ static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
#ifdef CONFIG_PM_SLEEP
static int xen_hvm_suspend(void *data)
{
int err;
struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
int *cancelled = data;
BUG_ON(!irqs_disabled());
err = sysdev_suspend(PMSG_SUSPEND);
if (err) {
printk(KERN_ERR "xen_hvm_suspend: sysdev_suspend failed: %d\n",
err);
return err;
}
*cancelled = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
xen_hvm_post_suspend(*cancelled);
@ -53,6 +61,8 @@ static int xen_hvm_suspend(void *data)
xen_timer_resume();
}
sysdev_resume();
return 0;
}