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ia64/xen: preliminary support for save/restore.
preliminary support for save/restore. Although Save/restore isn't fully working yet, this patch is necessary to compile. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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4 changed files with 99 additions and 1 deletions
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@ -3,7 +3,7 @@
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#
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#
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obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
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obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
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hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o
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hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o
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obj-$(CONFIG_IA64_GENERIC) += machvec.o
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obj-$(CONFIG_IA64_GENERIC) += machvec.o
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64
arch/ia64/xen/suspend.c
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64
arch/ia64/xen/suspend.c
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/******************************************************************************
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* arch/ia64/xen/suspend.c
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*
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* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* suspend/resume
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*/
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#include <xen/xen-ops.h>
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#include <asm/xen/hypervisor.h>
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#include "time.h"
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void
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xen_mm_pin_all(void)
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{
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/* nothing */
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}
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void
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xen_mm_unpin_all(void)
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{
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/* nothing */
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}
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void xen_pre_device_suspend(void)
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{
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/* nothing */
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}
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void
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xen_pre_suspend()
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{
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/* nothing */
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}
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void
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xen_post_suspend(int suspend_cancelled)
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{
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if (suspend_cancelled)
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return;
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xen_ia64_enable_opt_feature();
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/* add more if necessary */
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}
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void xen_arch_resume(void)
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{
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xen_timer_resume_on_aps();
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}
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@ -26,6 +26,8 @@
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#include <linux/irq.h>
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#include <linux/irq.h>
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#include <linux/clocksource.h>
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#include <linux/clocksource.h>
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#include <asm/timex.h>
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#include <asm/xen/hypervisor.h>
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#include <asm/xen/hypervisor.h>
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#include <xen/interface/vcpu.h>
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#include <xen/interface/vcpu.h>
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@ -178,3 +180,34 @@ struct pv_time_ops xen_time_ops __initdata = {
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.do_steal_accounting = xen_do_steal_accounting,
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.do_steal_accounting = xen_do_steal_accounting,
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.clocksource_resume = xen_itc_jitter_data_reset,
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.clocksource_resume = xen_itc_jitter_data_reset,
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};
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};
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/* Called after suspend, to resume time. */
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static void xen_local_tick_resume(void)
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{
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/* Just trigger a tick. */
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ia64_cpu_local_tick();
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touch_softlockup_watchdog();
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}
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void
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xen_timer_resume(void)
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{
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unsigned int cpu;
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xen_local_tick_resume();
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for_each_online_cpu(cpu)
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xen_init_missing_ticks_accounting(cpu);
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}
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static void ia64_cpu_local_tick_fn(void *unused)
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{
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xen_local_tick_resume();
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xen_init_missing_ticks_accounting(smp_processor_id());
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}
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void
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xen_timer_resume_on_aps(void)
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{
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smp_call_function(&ia64_cpu_local_tick_fn, NULL, 1);
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}
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*/
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*/
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extern struct pv_time_ops xen_time_ops __initdata;
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extern struct pv_time_ops xen_time_ops __initdata;
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void xen_timer_resume_on_aps(void);
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