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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [IA64] Save & restore.
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 306d7857928cfebfcc7f1a9d259e696797a4cfc2
# Parent dab0a5650e6df87ce202ef7375ae1e34ad3578ba
[IA64] Save & restore.
xc_ia64_linux_save.c and xc_ia64_linux_restore.c added.
vcpu context has more registers and states (eg: tr registers).
Per cpu irqs are deallocated when cpu is switched off.
#if/#endif added in reboot.c for ia64.
Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
---
linux-2.6-xen-sparse/arch/ia64/Kconfig | 2
linux-2.6-xen-sparse/arch/ia64/kernel/irq_ia64.c | 75 ++++-
linux-2.6-xen-sparse/arch/ia64/xen/hypervisor.c | 10
linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S | 20 +
linux-2.6-xen-sparse/drivers/xen/core/reboot.c | 27 +
linux-2.6-xen-sparse/include/asm-ia64/hypercall.h | 18 -
tools/libxc/ia64/Makefile | 2
tools/libxc/ia64/xc_ia64_linux_restore.c | 320 ++++++++++++++++++++++
tools/libxc/ia64/xc_ia64_linux_save.c | 295 ++++++++++++++++++++
tools/libxc/ia64/xc_ia64_stubs.c | 18 -
tools/libxc/xc_linux_build.c | 1
xen/arch/ia64/xen/dom0_ops.c | 46 ++-
xen/arch/ia64/xen/domain.c | 42 ++
xen/arch/ia64/xen/vcpu.c | 56 +++
xen/include/asm-ia64/vcpu.h | 5
xen/include/public/arch-ia64.h | 17 +
xen/include/public/dom0_ops.h | 4
17 files changed, 886 insertions(+), 72 deletions(-)
diff -r dab0a5650e6d -r 306d7857928c linux-2.6-xen-sparse/arch/ia64/Kconfig
--- a/linux-2.6-xen-sparse/arch/ia64/Kconfig Tue Jul 11 11:29:25 2006 -0600
+++ b/linux-2.6-xen-sparse/arch/ia64/Kconfig Tue Jul 11 12:51:18 2006 -0600
@@ -518,7 +518,7 @@ config XEN_DEVMEM
default n
config XEN_REBOOT
- default n
+ default y
config XEN_SMPBOOT
default n
diff -r dab0a5650e6d -r 306d7857928c
linux-2.6-xen-sparse/arch/ia64/kernel/irq_ia64.c
--- a/linux-2.6-xen-sparse/arch/ia64/kernel/irq_ia64.c Tue Jul 11 11:29:25
2006 -0600
+++ b/linux-2.6-xen-sparse/arch/ia64/kernel/irq_ia64.c Tue Jul 11 12:51:18
2006 -0600
@@ -31,6 +31,9 @@
#include <linux/smp_lock.h>
#include <linux/threads.h>
#include <linux/bitops.h>
+#ifdef CONFIG_XEN
+#include <linux/cpu.h>
+#endif
#include <asm/delay.h>
#include <asm/intrinsics.h>
@@ -235,6 +238,9 @@ static struct irqaction ipi_irqaction =
#include <xen/evtchn.h>
#include <xen/interface/callback.h>
+static DEFINE_PER_CPU(int, timer_irq) = -1;
+static DEFINE_PER_CPU(int, ipi_irq) = -1;
+static DEFINE_PER_CPU(int, resched_irq) = -1;
static char timer_name[NR_CPUS][15];
static char ipi_name[NR_CPUS][15];
static char resched_name[NR_CPUS][15];
@@ -294,6 +300,7 @@ xen_register_percpu_irq (unsigned int ir
ret = bind_virq_to_irqhandler(VIRQ_ITC, cpu,
action->handler, action->flags,
timer_name[cpu], action->dev_id);
+ per_cpu(timer_irq,cpu) = ret;
printk(KERN_INFO "register VIRQ_ITC (%s) to xen irq
(%d)\n", timer_name[cpu], ret);
break;
case IA64_IPI_RESCHEDULE:
@@ -301,6 +308,7 @@ xen_register_percpu_irq (unsigned int ir
ret = bind_ipi_to_irqhandler(RESCHEDULE_VECTOR, cpu,
action->handler, action->flags,
resched_name[cpu], action->dev_id);
+ per_cpu(resched_irq,cpu) = ret;
printk(KERN_INFO "register RESCHEDULE_VECTOR (%s) to
xen irq (%d)\n", resched_name[cpu], ret);
break;
case IA64_IPI_VECTOR:
@@ -308,6 +316,7 @@ xen_register_percpu_irq (unsigned int ir
ret = bind_ipi_to_irqhandler(IPI_VECTOR, cpu,
action->handler, action->flags,
ipi_name[cpu], action->dev_id);
+ per_cpu(ipi_irq,cpu) = ret;
printk(KERN_INFO "register IPI_VECTOR (%s) to xen irq
(%d)\n", ipi_name[cpu], ret);
break;
case IA64_SPURIOUS_INT_VECTOR:
@@ -343,7 +352,7 @@ xen_bind_early_percpu_irq (void)
*/
for (i = 0; i < late_irq_cnt; i++)
xen_register_percpu_irq(saved_percpu_irqs[i].irq,
- saved_percpu_irqs[i].action, 0);
+ saved_percpu_irqs[i].action, 0);
}
/* FIXME: There's no obvious point to check whether slab is ready. So
@@ -352,6 +361,38 @@ extern void (*late_time_init)(void);
extern void (*late_time_init)(void);
extern char xen_event_callback;
extern void xen_init_IRQ(void);
+
+#ifdef CONFIG_HOTPLUG_CPU
+static int __devinit
+unbind_evtchn_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+
+ if (action == CPU_DEAD) {
+ /* Unregister evtchn. */
+ if (per_cpu(ipi_irq,cpu) >= 0) {
+ unbind_from_irqhandler (per_cpu(ipi_irq, cpu), NULL);
+ per_cpu(ipi_irq, cpu) = -1;
+ }
+ if (per_cpu(resched_irq,cpu) >= 0) {
+ unbind_from_irqhandler (per_cpu(resched_irq, cpu),
+ NULL);
+ per_cpu(resched_irq, cpu) = -1;
+ }
+ if (per_cpu(timer_irq,cpu) >= 0) {
+ unbind_from_irqhandler (per_cpu(timer_irq, cpu), NULL);
+ per_cpu(timer_irq, cpu) = -1;
+ }
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block unbind_evtchn_notifier = {
+ .notifier_call = unbind_evtchn_callback,
+ .priority = 0
+};
+#endif
DECLARE_PER_CPU(int, ipi_to_irq[NR_IPIS]);
void xen_smp_intr_init(void)
@@ -363,21 +404,22 @@ void xen_smp_intr_init(void)
.type = CALLBACKTYPE_event,
.address = (unsigned long)&xen_event_callback,
};
- static cpumask_t registered_cpumask;
-
- if (!cpu)
+
+ if (cpu == 0) {
+ /* Initialization was already done for boot cpu. */
+#ifdef CONFIG_HOTPLUG_CPU
+ /* Register the notifier only once. */
+ register_cpu_notifier(&unbind_evtchn_notifier);
+#endif
return;
+ }
/* This should be piggyback when setup vcpu guest context */
BUG_ON(HYPERVISOR_callback_op(CALLBACKOP_register, &event));
- if (!cpu_isset(cpu, registered_cpumask)) {
- cpu_set(cpu, registered_cpumask);
- for (i = 0; i < saved_irq_cnt; i++)
- xen_register_percpu_irq(saved_percpu_irqs[i].irq,
- saved_percpu_irqs[i].action,
- 0);
- }
+ for (i = 0; i < saved_irq_cnt; i++)
+ xen_register_percpu_irq(saved_percpu_irqs[i].irq,
+ saved_percpu_irqs[i].action, 0);
#endif /* CONFIG_SMP */
}
#endif /* CONFIG_XEN */
@@ -388,12 +430,13 @@ register_percpu_irq (ia64_vector vec, st
irq_desc_t *desc;
unsigned int irq;
+#ifdef CONFIG_XEN
+ if (is_running_on_xen())
+ return xen_register_percpu_irq(vec, action, 1);
+#endif
+
for (irq = 0; irq < NR_IRQS; ++irq)
if (irq_to_vector(irq) == vec) {
-#ifdef CONFIG_XEN
- if (is_running_on_xen())
- return xen_register_percpu_irq(vec, action, 1);
-#endif
desc = irq_descp(irq);
desc->status |= IRQ_PER_CPU;
desc->handler = &irq_type_ia64_lsapic;
@@ -406,6 +449,8 @@ init_IRQ (void)
init_IRQ (void)
{
#ifdef CONFIG_XEN
+ printk(KERN_INFO "init_IRQ called from %p\n",
+ __builtin_return_address (0));
/* Maybe put into platform_irq_init later */
if (is_running_on_xen()) {
struct callback_register event = {
diff -r dab0a5650e6d -r 306d7857928c
linux-2.6-xen-sparse/arch/ia64/xen/hypervisor.c
--- a/linux-2.6-xen-sparse/arch/ia64/xen/hypervisor.c Tue Jul 11 11:29:25
2006 -0600
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/hypervisor.c Tue Jul 11 12:51:18
2006 -0600
@@ -795,3 +795,13 @@ direct_remap_pfn_range(struct vm_area_st
return error;
}
+
+/* Called after suspend, to resume time. */
+void
+time_resume(void)
+{
+ extern void ia64_cpu_local_tick(void);
+
+ /* Just trigger a tick. */
+ ia64_cpu_local_tick();
+}
diff -r dab0a5650e6d -r 306d7857928c
linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S
--- a/linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S Tue Jul 11 11:29:25
2006 -0600
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S Tue Jul 11 12:51:18
2006 -0600
@@ -33,3 +33,23 @@ GLOBAL_ENTRY(early_xen_setup)
br.ret.sptk.many rp
;;
END(early_xen_setup)
+
+#include <xen/interface/xen.h>
+
+/* Stub for suspend.
+ Just force the stacked registers to be written in memory. */
+GLOBAL_ENTRY(HYPERVISOR_suspend)
+ alloc r20=ar.pfs,0,0,0,0
+ mov r14=2
+ mov r15=r12
+ ;;
+ /* We don't want to deal with RSE. */
+ flushrs
+ mov r2=__HYPERVISOR_sched_op
+ st4 [r12]=r14
+ ;;
+ break 0x1000
+ ;;
+ mov ar.pfs=r20
+ br.ret.sptk.many b0
+END(HYPERVISOR_suspend)
diff -r dab0a5650e6d -r 306d7857928c
linux-2.6-xen-sparse/drivers/xen/core/reboot.c
--- a/linux-2.6-xen-sparse/drivers/xen/core/reboot.c Tue Jul 11 11:29:25
2006 -0600
+++ b/linux-2.6-xen-sparse/drivers/xen/core/reboot.c Tue Jul 11 12:51:18
2006 -0600
@@ -39,6 +39,7 @@ extern void ctrl_alt_del(void);
*/
#define SHUTDOWN_HALT 4
+#if defined(__i386__) || defined(__x86_64__)
void machine_emergency_restart(void)
{
/* We really want to get pending console data out before we die. */
@@ -60,10 +61,8 @@ void machine_power_off(void)
{
/* We really want to get pending console data out before we die. */
xencons_force_flush();
-#if defined(__i386__) || defined(__x86_64__)
if (pm_power_off)
pm_power_off();
-#endif
HYPERVISOR_shutdown(SHUTDOWN_poweroff);
}
@@ -71,7 +70,7 @@ EXPORT_SYMBOL(machine_restart);
EXPORT_SYMBOL(machine_restart);
EXPORT_SYMBOL(machine_halt);
EXPORT_SYMBOL(machine_power_off);
-
+#endif
/******************************************************************************
* Stop/pickle callback handling.
@@ -82,6 +81,7 @@ static void __shutdown_handler(void *unu
static void __shutdown_handler(void *unused);
static DECLARE_WORK(shutdown_work, __shutdown_handler, NULL);
+#if defined(__i386__) || defined(__x86_64__)
/* Ensure we run on the idle task page tables so that we will
switch page tables before running user space. This is needed
on architectures with separate kernel and user page tables
@@ -98,25 +98,30 @@ static void switch_idle_mm(void)
current->active_mm = &init_mm;
mmdrop(mm);
}
+#endif
static int __do_suspend(void *ignore)
{
- int i, j, k, fpp, err;
-
+ int err;
+#if defined(__i386__) || defined(__x86_64__)
+ int i, j, k, fpp;
extern unsigned long max_pfn;
extern unsigned long *pfn_to_mfn_frame_list_list;
extern unsigned long *pfn_to_mfn_frame_list[];
+#endif
extern void time_resume(void);
BUG_ON(smp_processor_id() != 0);
BUG_ON(in_interrupt());
+#if defined(__i386__) || defined(__x86_64__)
if (xen_feature(XENFEAT_auto_translated_physmap)) {
printk(KERN_WARNING "Cannot suspend in "
"auto_translated_physmap mode.\n");
return -EOPNOTSUPP;
}
+#endif
err = smp_suspend();
if (err)
@@ -129,18 +134,24 @@ static int __do_suspend(void *ignore)
#ifdef __i386__
kmem_cache_shrink(pgd_cache);
#endif
+#if defined(__i386__) || defined(__x86_64__)
mm_pin_all();
__cli();
+#elif defined(__ia64__)
+ local_irq_disable();
+#endif
preempt_enable();
gnttab_suspend();
+#if defined(__i386__) || defined(__x86_64__)
HYPERVISOR_shared_info = (shared_info_t *)empty_zero_page;
clear_fixmap(FIX_SHARED_INFO);
xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
xen_start_info->console_mfn = mfn_to_pfn(xen_start_info->console_mfn);
+#endif
/*
* We'll stop somewhere inside this hypercall. When it returns,
@@ -150,6 +161,7 @@ static int __do_suspend(void *ignore)
shutting_down = SHUTDOWN_INVALID;
+#if defined(__i386__) || defined(__x86_64__)
set_fixmap(FIX_SHARED_INFO, xen_start_info->shared_info);
HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO);
@@ -171,6 +183,7 @@ static int __do_suspend(void *ignore)
virt_to_mfn(&phys_to_machine_mapping[i]);
}
HYPERVISOR_shared_info->arch.max_pfn = max_pfn;
+#endif
gnttab_resume();
@@ -178,9 +191,13 @@ static int __do_suspend(void *ignore)
time_resume();
+#if defined(__i386__) || defined(__x86_64__)
switch_idle_mm();
__sti();
+#elif defined(__ia64__)
+ local_irq_enable();
+#endif
xencons_resume();
diff -r dab0a5650e6d -r 306d7857928c
linux-2.6-xen-sparse/include/asm-ia64/hypercall.h
--- a/linux-2.6-xen-sparse/include/asm-ia64/hypercall.h Tue Jul 11 11:29:25
2006 -0600
+++ b/linux-2.6-xen-sparse/include/asm-ia64/hypercall.h Tue Jul 11 12:51:18
2006 -0600
@@ -302,23 +302,7 @@ HYPERVISOR_vcpu_op(
return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
}
-static inline int
-HYPERVISOR_suspend(
- unsigned long srec)
-{
- struct sched_shutdown sched_shutdown = {
- .reason = SHUTDOWN_suspend
- };
-
- int rc = _hypercall3(int, sched_op, SCHEDOP_shutdown,
- &sched_shutdown, srec);
-
- if (rc == -ENOSYS)
- rc = _hypercall3(int, sched_op_compat, SCHEDOP_shutdown,
- SHUTDOWN_suspend, srec);
-
- return rc;
-}
+extern int HYPERVISOR_suspend(unsigned long srec);
static inline int
HYPERVISOR_callback_op(
diff -r dab0a5650e6d -r 306d7857928c tools/libxc/ia64/Makefile
--- a/tools/libxc/ia64/Makefile Tue Jul 11 11:29:25 2006 -0600
+++ b/tools/libxc/ia64/Makefile Tue Jul 11 12:51:18 2006 -0600
@@ -1,3 +1,5 @@ CTRL_SRCS-$(CONFIG_IA64) += ia64/xc_ia64
CTRL_SRCS-$(CONFIG_IA64) += ia64/xc_ia64_stubs.c
GUEST_SRCS-$(CONFIG_IA64) += ia64/xc_ia64_hvm_build.c
+GUEST_SRCS-$(CONFIG_IA64) += ia64/xc_ia64_linux_save.c
+GUEST_SRCS-$(CONFIG_IA64) += ia64/xc_ia64_linux_restore.c
diff -r dab0a5650e6d -r 306d7857928c tools/libxc/ia64/xc_ia64_stubs.c
--- a/tools/libxc/ia64/xc_ia64_stubs.c Tue Jul 11 11:29:25 2006 -0600
+++ b/tools/libxc/ia64/xc_ia64_stubs.c Tue Jul 11 12:51:18 2006 -0600
@@ -21,24 +21,6 @@ xc_ia64_fpsr_default(void)
xc_ia64_fpsr_default(void)
{
return FPSR_DEFAULT;
-}
-
-int
-xc_linux_save(int xc_handle, int io_fd, uint32_t dom, uint32_t max_iters,
- uint32_t max_factor, uint32_t flags /* XCFLAGS_xxx */,
- int (*suspend)(int domid))
-{
- PERROR("xc_linux_save not implemented\n");
- return -1;
-}
-
-int
-xc_linux_restore(int xc_handle, int io_fd, uint32_t dom, unsigned long nr_pfns,
- unsigned int store_evtchn, unsigned long *store_mfn,
- unsigned int console_evtchn, unsigned long *console_mfn)
-{
- PERROR("xc_linux_restore not implemented\n");
- return -1;
}
/*
diff -r dab0a5650e6d -r 306d7857928c tools/libxc/xc_linux_build.c
--- a/tools/libxc/xc_linux_build.c Tue Jul 11 11:29:25 2006 -0600
+++ b/tools/libxc/xc_linux_build.c Tue Jul 11 12:51:18 2006 -0600
@@ -498,6 +498,7 @@ static int setup_guest(int xc_handle,
start_info_mpa = (nr_pages - 3) << PAGE_SHIFT;
/* Build firmware. */
+ memset(&op.u.domain_setup, 0, sizeof(op.u.domain_setup));
op.u.domain_setup.flags = 0;
op.u.domain_setup.domain = (domid_t)dom;
op.u.domain_setup.bp = start_info_mpa + sizeof (start_info_t);
diff -r dab0a5650e6d -r 306d7857928c xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c Tue Jul 11 11:29:25 2006 -0600
+++ b/xen/arch/ia64/xen/dom0_ops.c Tue Jul 11 12:51:18 2006 -0600
@@ -224,19 +224,43 @@ long arch_do_dom0_op(dom0_op_t *op, XEN_
break;
}
- if (ds->flags & XEN_DOMAINSETUP_hvm_guest) {
- if (!vmx_enabled) {
- printk("No VMX hardware feature for vmx domain.\n");
- ret = -EINVAL;
- break;
- }
- d->arch.is_vti = 1;
- vmx_setup_platform(d);
+ if (ds->flags & XEN_DOMAINSETUP_query) {
+ /* Set flags. */
+ if (d->arch.is_vti)
+ ds->flags |= XEN_DOMAINSETUP_hvm_guest;
+ /* Set params. */
+ ds->bp = 0; /* unknown. */
+ ds->maxmem = 0; /* unknown. */
+ ds->xsi_va = d->arch.shared_info_va;
+ ds->hypercall_imm = d->arch.breakimm;
+ /* Copy back. */
+ if ( copy_to_guest(u_dom0_op, op, 1) )
+ ret = -EFAULT;
}
else {
- build_physmap_table(d);
- dom_fw_setup(d, ds->bp, ds->maxmem);
- }
+ if (ds->flags & XEN_DOMAINSETUP_hvm_guest) {
+ if (!vmx_enabled) {
+ printk("No VMX hardware feature for vmx domain.\n");
+ ret = -EINVAL;
+ break;
+ }
+ d->arch.is_vti = 1;
+ vmx_setup_platform(d);
+ }
+ else {
+ build_physmap_table(d);
+ dom_fw_setup(d, ds->bp, ds->maxmem);
+ if (ds->xsi_va)
+ d->arch.shared_info_va = ds->xsi_va;
+ if (ds->hypercall_imm) {
+ struct vcpu *v;
+ d->arch.breakimm = ds->hypercall_imm;
+ for_each_vcpu (d, v)
+ v->arch.breakimm = d->arch.breakimm;
+ }
+ }
+ }
+
put_domain(d);
}
break;
diff -r dab0a5650e6d -r 306d7857928c xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c Tue Jul 11 11:29:25 2006 -0600
+++ b/xen/arch/ia64/xen/domain.c Tue Jul 11 12:51:18 2006 -0600
@@ -407,8 +407,28 @@ void arch_domain_destroy(struct domain *
void arch_getdomaininfo_ctxt(struct vcpu *v, struct vcpu_guest_context *c)
{
+ int i;
+ struct vcpu_extra_regs *er = &c->extra_regs;
+
c->user_regs = *vcpu_regs (v);
c->privregs_pfn = virt_to_maddr(v->arch.privregs) >> PAGE_SHIFT;
+
+ /* Fill extra regs. */
+ for (i = 0; i < 8; i++) {
+ er->itrs[i].pte = v->arch.itrs[i].pte.val;
+ er->itrs[i].itir = v->arch.itrs[i].itir;
+ er->itrs[i].vadr = v->arch.itrs[i].vadr;
+ er->itrs[i].rid = v->arch.itrs[i].rid;
+ }
+ for (i = 0; i < 8; i++) {
+ er->dtrs[i].pte = v->arch.dtrs[i].pte.val;
+ er->dtrs[i].itir = v->arch.dtrs[i].itir;
+ er->dtrs[i].vadr = v->arch.dtrs[i].vadr;
+ er->dtrs[i].rid = v->arch.dtrs[i].rid;
+ }
+ er->event_callback_ip = v->arch.event_callback_ip;
+ er->dcr = v->arch.dcr;
+ er->iva = v->arch.iva;
}
int arch_set_info_guest(struct vcpu *v, struct vcpu_guest_context *c)
@@ -423,6 +443,28 @@ int arch_set_info_guest(struct vcpu *v,
regs->cr_ipsr |= 2UL << IA64_PSR_CPL0_BIT;
regs->ar_rsc |= (2 << 2); /* force PL2/3 */
}
+
+ if (c->flags & VGCF_EXTRA_REGS) {
+ int i;
+ struct vcpu_extra_regs *er = &c->extra_regs;
+
+ for (i = 0; i < 8; i++) {
+ vcpu_set_itr(v, i, er->itrs[i].pte,
+ er->itrs[i].itir,
+ er->itrs[i].vadr,
+ er->itrs[i].rid);
+ }
+ for (i = 0; i < 8; i++) {
+ vcpu_set_dtr(v, i,
+ er->dtrs[i].pte,
+ er->dtrs[i].itir,
+ er->dtrs[i].vadr,
+ er->dtrs[i].rid);
+ }
+ v->arch.event_callback_ip = er->event_callback_ip;
+ v->arch.dcr = er->dcr;
+ v->arch.iva = er->iva;
+ }
if ( test_bit(_VCPUF_initialised, &v->vcpu_flags) )
return 0;
diff -r dab0a5650e6d -r 306d7857928c xen/arch/ia64/xen/vcpu.c
--- a/xen/arch/ia64/xen/vcpu.c Tue Jul 11 11:29:25 2006 -0600
+++ b/xen/arch/ia64/xen/vcpu.c Tue Jul 11 12:51:18 2006 -0600
@@ -1880,13 +1880,15 @@ IA64FAULT vcpu_set_pkr(VCPU *vcpu, UINT6
VCPU translation register access routines
**************************************************************************/
-static void vcpu_set_tr_entry(TR_ENTRY *trp, UINT64 pte, UINT64 itir, UINT64
ifa)
+static void
+vcpu_set_tr_entry_rid(TR_ENTRY *trp, UINT64 pte,
+ UINT64 itir, UINT64 ifa, UINT64 rid)
{
UINT64 ps;
union pte_flags new_pte;
trp->itir = itir;
- trp->rid = VCPU(current,rrs[ifa>>61]) & RR_RID_MASK;
+ trp->rid = rid;
ps = trp->ps;
new_pte.val = pte;
if (new_pte.pl < 2) new_pte.pl = 2;
@@ -1900,8 +1902,15 @@ static void vcpu_set_tr_entry(TR_ENTRY *
trp->pte.val = new_pte.val;
}
+static inline void
+vcpu_set_tr_entry(TR_ENTRY *trp, UINT64 pte, UINT64 itir, UINT64 ifa)
+{
+ vcpu_set_tr_entry_rid(trp, pte, itir, ifa,
+ VCPU(current, rrs[ifa>>61]) & RR_RID_MASK);
+}
+
IA64FAULT vcpu_itr_d(VCPU *vcpu, UINT64 slot, UINT64 pte,
- UINT64 itir, UINT64 ifa)
+ UINT64 itir, UINT64 ifa)
{
TR_ENTRY *trp;
@@ -1920,7 +1929,7 @@ IA64FAULT vcpu_itr_d(VCPU *vcpu, UINT64
}
IA64FAULT vcpu_itr_i(VCPU *vcpu, UINT64 slot, UINT64 pte,
- UINT64 itir, UINT64 ifa)
+ UINT64 itir, UINT64 ifa)
{
TR_ENTRY *trp;
@@ -1935,6 +1944,44 @@ IA64FAULT vcpu_itr_i(VCPU *vcpu, UINT64
vcpu_flush_tlb_vhpt_range(ifa & itir_mask(itir), itir_ps(itir));
+ return IA64_NO_FAULT;
+}
+
+IA64FAULT vcpu_set_itr(VCPU *vcpu, u64 slot, u64 pte,
+ u64 itir, u64 ifa, u64 rid)
+{
+ TR_ENTRY *trp;
+
+ if (slot >= NITRS)
+ return IA64_RSVDREG_FAULT;
+ trp = &PSCBX(vcpu, itrs[slot]);
+ vcpu_set_tr_entry_rid(trp, pte, itir, ifa, rid);
+
+ /* Recompute the itr_region. */
+ vcpu->arch.itr_regions = 0;
+ for (trp = vcpu->arch.itrs; trp < &vcpu->arch.itrs[NITRS]; trp++)
+ if (trp->pte.p)
+ vcpu_quick_region_set(vcpu->arch.itr_regions,
+ trp->vadr);
+ return IA64_NO_FAULT;
+}
+
+IA64FAULT vcpu_set_dtr(VCPU *vcpu, u64 slot, u64 pte,
+ u64 itir, u64 ifa, u64 rid)
+{
+ TR_ENTRY *trp;
+
+ if (slot >= NDTRS)
+ return IA64_RSVDREG_FAULT;
+ trp = &PSCBX(vcpu, dtrs[slot]);
+ vcpu_set_tr_entry_rid(trp, pte, itir, ifa, rid);
+
+ /* Recompute the dtr_region. */
+ vcpu->arch.dtr_regions = 0;
+ for (trp = vcpu->arch.dtrs; trp < &vcpu->arch.dtrs[NDTRS]; trp++)
+ if (trp->pte.p)
+ vcpu_quick_region_set(vcpu->arch.dtr_regions,
+ trp->vadr);
return IA64_NO_FAULT;
}
@@ -2159,7 +2206,6 @@ IA64FAULT vcpu_ptr_i(VCPU *vcpu,UINT64 v
vcpu_quick_region_set(vcpu->arch.itr_regions,
trp->vadr);
-
vcpu_flush_tlb_vhpt_range (vadr, log_range);
return IA64_NO_FAULT;
diff -r dab0a5650e6d -r 306d7857928c xen/include/asm-ia64/vcpu.h
--- a/xen/include/asm-ia64/vcpu.h Tue Jul 11 11:29:25 2006 -0600
+++ b/xen/include/asm-ia64/vcpu.h Tue Jul 11 12:51:18 2006 -0600
@@ -164,6 +164,11 @@ extern UINT64 vcpu_get_tmp(VCPU *, UINT6
extern UINT64 vcpu_get_tmp(VCPU *, UINT64);
extern void vcpu_set_tmp(VCPU *, UINT64, UINT64);
+extern IA64FAULT vcpu_set_dtr(VCPU *vcpu, u64 slot,
+ u64 pte, u64 itir, u64 ifa, u64 rid);
+extern IA64FAULT vcpu_set_itr(VCPU *vcpu, u64 slot,
+ u64 pte, u64 itir, u64 ifa, u64 rid);
+
/* Initialize vcpu regs. */
extern void vcpu_init_regs (struct vcpu *v);
diff -r dab0a5650e6d -r 306d7857928c xen/include/public/arch-ia64.h
--- a/xen/include/public/arch-ia64.h Tue Jul 11 11:29:25 2006 -0600
+++ b/xen/include/public/arch-ia64.h Tue Jul 11 12:51:18 2006 -0600
@@ -302,10 +302,27 @@ typedef struct arch_shared_info arch_sha
typedef unsigned long xen_callback_t;
+struct ia64_tr_entry {
+ unsigned long pte;
+ unsigned long itir;
+ unsigned long vadr;
+ unsigned long rid;
+};
+
+struct vcpu_extra_regs {
+ struct ia64_tr_entry itrs[8];
+ struct ia64_tr_entry dtrs[8];
+ unsigned long iva;
+ unsigned long dcr;
+ unsigned long event_callback_ip;
+};
+
struct vcpu_guest_context {
+#define VGCF_EXTRA_REGS (1<<1) /* Get/Set extra regs. */
unsigned long flags; /* VGCF_* flags */
struct cpu_user_regs user_regs;
+ struct vcpu_extra_regs extra_regs;
unsigned long privregs_pfn;
};
typedef struct vcpu_guest_context vcpu_guest_context_t;
diff -r dab0a5650e6d -r 306d7857928c xen/include/public/dom0_ops.h
--- a/xen/include/public/dom0_ops.h Tue Jul 11 11:29:25 2006 -0600
+++ b/xen/include/public/dom0_ops.h Tue Jul 11 12:51:18 2006 -0600
@@ -518,12 +518,16 @@ DEFINE_XEN_GUEST_HANDLE(dom0_hypercall_i
#define DOM0_DOMAIN_SETUP 49
#define _XEN_DOMAINSETUP_hvm_guest 0
#define XEN_DOMAINSETUP_hvm_guest (1UL<<_XEN_DOMAINSETUP_hvm_guest)
+#define _XEN_DOMAINSETUP_query 1 /* Get parameters (for save) */
+#define XEN_DOMAINSETUP_query (1UL<<_XEN_DOMAINSETUP_query)
typedef struct dom0_domain_setup {
domid_t domain; /* domain to be affected */
unsigned long flags; /* XEN_DOMAINSETUP_* */
#ifdef __ia64__
unsigned long bp; /* mpaddr of boot param area */
unsigned long maxmem; /* Highest memory address for MDT. */
+ unsigned long xsi_va; /* Xen shared_info area virtual address. */
+ unsigned int hypercall_imm; /* Break imm for Xen hypercalls. */
#endif
} dom0_domain_setup_t;
DEFINE_XEN_GUEST_HANDLE(dom0_domain_setup_t);
diff -r dab0a5650e6d -r 306d7857928c tools/libxc/ia64/xc_ia64_linux_restore.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/ia64/xc_ia64_linux_restore.c Tue Jul 11 12:51:18 2006 -0600
@@ -0,0 +1,320 @@
+/******************************************************************************
+ * xc_ia64_linux_restore.c
+ *
+ * Restore the state of a Linux session.
+ *
+ * Copyright (c) 2003, K A Fraser.
+ * Rewritten for ia64 by Tristan Gingold <tristan.gingold@xxxxxxxx>
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "xg_private.h"
+
+#define PFN_TO_KB(_pfn) ((_pfn) << (PAGE_SHIFT - 10))
+
+/* total number of pages used by the current guest */
+static unsigned long max_pfn;
+
+static ssize_t
+read_exact(int fd, void *buf, size_t count)
+{
+ int r = 0, s;
+ unsigned char *b = buf;
+
+ while (r < count) {
+ s = read(fd, &b[r], count - r);
+ if ((s == -1) && (errno == EINTR))
+ continue;
+ if (s <= 0) {
+ break;
+ }
+ r += s;
+ }
+
+ return (r == count) ? 1 : 0;
+}
+
+static int
+read_page(int xc_handle, int io_fd, uint32_t dom, unsigned long pfn)
+{
+ void *mem;
+
+ mem = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ|PROT_WRITE, pfn);
+ if (mem == NULL) {
+ ERR("cannot map page");
+ return -1;
+ }
+ if (!read_exact(io_fd, mem, PAGE_SIZE)) {
+ ERR("Error when reading from state file (5)");
+ return -1;
+ }
+ munmap(mem, PAGE_SIZE);
+ return 0;
+}
+
+int
+xc_linux_restore(int xc_handle, int io_fd, uint32_t dom,
+ unsigned long nr_pfns, unsigned int store_evtchn,
+ unsigned long *store_mfn, unsigned int console_evtchn,
+ unsigned long *console_mfn)
+{
+ DECLARE_DOM0_OP;
+ int rc = 1, i;
+ unsigned long mfn, pfn;
+ unsigned long ver;
+
+ /* The new domain's shared-info frame number. */
+ unsigned long shared_info_frame;
+ unsigned char shared_info_page[PAGE_SIZE]; /* saved contents from file */
+ shared_info_t *shared_info = (shared_info_t *)shared_info_page;
+
+ /* A copy of the CPU context of the guest. */
+ vcpu_guest_context_t ctxt;
+
+ unsigned long *page_array = NULL;
+
+ /* A temporary mapping of the guest's start_info page. */
+ start_info_t *start_info;
+
+ max_pfn = nr_pfns;
+
+ DPRINTF("xc_linux_restore start: max_pfn = %ld\n", max_pfn);
+
+
+ if (!read_exact(io_fd, &ver, sizeof(unsigned long))) {
+ ERR("Error when reading version");
+ goto out;
+ }
+ if (ver != 1) {
+ ERR("version of save doesn't match");
+ goto out;
+ }
+
+ if (mlock(&ctxt, sizeof(ctxt))) {
+ /* needed for build dom0 op, but might as well do early */
+ ERR("Unable to mlock ctxt");
+ return 1;
+ }
+
+ /* Get the domain's shared-info frame. */
+ op.cmd = DOM0_GETDOMAININFO;
+ op.u.getdomaininfo.domain = (domid_t)dom;
+ if (xc_dom0_op(xc_handle, &op) < 0) {
+ ERR("Could not get information on new domain");
+ goto out;
+ }
+ shared_info_frame = op.u.getdomaininfo.shared_info_frame;
+
+ if (xc_domain_setmaxmem(xc_handle, dom, PFN_TO_KB(max_pfn)) != 0) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ if (xc_domain_memory_increase_reservation(xc_handle, dom, max_pfn,
+ 0, 0, NULL) != 0) {
+ ERR("Failed to increase reservation by %ld KB", PFN_TO_KB(max_pfn));
+ errno = ENOMEM;
+ goto out;
+ }
+
+ DPRINTF("Increased domain reservation by %ld KB\n", PFN_TO_KB(max_pfn));
+
+ if (!read_exact(io_fd, &op.u.domain_setup, sizeof(op.u.domain_setup))) {
+ ERR("read: domain setup");
+ goto out;
+ }
+
+ /* Build firmware (will be overwritten). */
+ op.u.domain_setup.domain = (domid_t)dom;
+ op.u.domain_setup.flags &= ~XEN_DOMAINSETUP_query;
+ op.u.domain_setup.bp = ((nr_pfns - 3) << PAGE_SHIFT)
+ + sizeof (start_info_t);
+ op.u.domain_setup.maxmem = (nr_pfns - 3) << PAGE_SHIFT;
+
+ op.cmd = DOM0_DOMAIN_SETUP;
+ if (xc_dom0_op(xc_handle, &op))
+ goto out;
+
+ /* Get pages. */
+ page_array = malloc(max_pfn * sizeof(unsigned long));
+ if (page_array == NULL ) {
+ ERR("Could not allocate memory");
+ goto out;
+ }
+
+ if (xc_ia64_get_pfn_list(xc_handle, dom, page_array,
+ 0, max_pfn) != max_pfn) {
+ ERR("Could not get the page frame list");
+ goto out;
+ }
+
+ DPRINTF("Reloading memory pages: 0%%\n");
+
+ while (1) {
+ if (!read_exact(io_fd, &mfn, sizeof(unsigned long))) {
+ ERR("Error when reading batch size");
+ goto out;
+ }
+ if (mfn == INVALID_MFN)
+ break;
+
+ pfn = page_array[mfn];
+
+ DPRINTF ("xc_linux_restore: page %lu/%lu at %lx\n", mfn, max_pfn, pfn);
+
+ if (read_page(xc_handle, io_fd, dom, page_array[mfn]) < 0)
+ goto out;
+ }
+
+ DPRINTF("Received all pages\n");
+
+ /* Get the list of PFNs that are not in the psuedo-phys map */
+ {
+ unsigned int count;
+ unsigned long *pfntab;
+ int rc;
+
+ if (!read_exact(io_fd, &count, sizeof(count))) {
+ ERR("Error when reading pfn count");
+ goto out;
+ }
+
+ pfntab = malloc(sizeof(unsigned long) * count);
+ if (!pfntab) {
+ ERR("Out of memory");
+ goto out;
+ }
+
+ if (!read_exact(io_fd, pfntab, sizeof(unsigned long)*count)) {
+ ERR("Error when reading pfntab");
+ goto out;
+ }
+
+ DPRINTF ("Try to free %u pages\n", count);
+
+ for (i = 0; i < count; i++) {
+
+ volatile unsigned long pfn;
+
+ struct xen_memory_reservation reservation = {
+ .nr_extents = 1,
+ .extent_order = 0,
+ .domid = dom
+ };
+ set_xen_guest_handle(reservation.extent_start,
+ (unsigned long *)&pfn);
+
+ pfn = pfntab[i];
+ rc = xc_memory_op(xc_handle, XENMEM_decrease_reservation,
+ &reservation);
+ if (rc != 1) {
+ ERR("Could not decrease reservation : %d", rc);
+ goto out;
+ }
+ }
+
+ DPRINTF("Decreased reservation by %d pages\n", count);
+ }
+
+
+ if (!read_exact(io_fd, &ctxt, sizeof(ctxt))) {
+ ERR("Error when reading ctxt");
+ goto out;
+ }
+
+ /* First to initialize. */
+ op.cmd = DOM0_SETVCPUCONTEXT;
+ op.u.setvcpucontext.domain = (domid_t)dom;
+ op.u.setvcpucontext.vcpu = 0;
+ set_xen_guest_handle(op.u.setvcpucontext.ctxt, &ctxt);
+ if (xc_dom0_op(xc_handle, &op) != 0) {
+ ERR("Couldn't set vcpu context");
+ goto out;
+ }
+
+ /* Second to set registers... */
+ ctxt.flags = VGCF_EXTRA_REGS;
+ op.cmd = DOM0_SETVCPUCONTEXT;
+ op.u.setvcpucontext.domain = (domid_t)dom;
+ op.u.setvcpucontext.vcpu = 0;
+ set_xen_guest_handle(op.u.setvcpucontext.ctxt, &ctxt);
+ if (xc_dom0_op(xc_handle, &op) != 0) {
+ ERR("Couldn't set vcpu context");
+ goto out;
+ }
+
+ /* Just a check. */
+ if (xc_vcpu_getcontext(xc_handle, dom, 0 /* XXX */, &ctxt)) {
+ ERR("Could not get vcpu context");
+ goto out;
+ }
+
+ /* Then get privreg page. */
+ if (read_page(xc_handle, io_fd, dom, ctxt.privregs_pfn) < 0) {
+ ERR("Could not read vcpu privregs");
+ goto out;
+ }
+
+ /* Read shared info. */
+ shared_info = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ|PROT_WRITE,
shared_info_frame);
+ if (shared_info == NULL) {
+ ERR("cannot map page");
+ goto out;
+ }
+ if (!read_exact(io_fd, shared_info, PAGE_SIZE)) {
+ ERR("Error when reading shared_info page");
+ goto out;
+ }
+
+ /* clear any pending events and the selector */
+ memset(&(shared_info->evtchn_pending[0]), 0,
+ sizeof (shared_info->evtchn_pending));
+ for (i = 0; i < MAX_VIRT_CPUS; i++)
+ shared_info->vcpu_info[i].evtchn_pending_sel = 0;
+
+ mfn = page_array[shared_info->arch.start_info_pfn];
+
+ munmap (shared_info, PAGE_SIZE);
+
+ /* Uncanonicalise the suspend-record frame number and poke resume rec. */
+ start_info = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ | PROT_WRITE, mfn);
+ start_info->nr_pages = max_pfn;
+ start_info->shared_info = shared_info_frame << PAGE_SHIFT;
+ start_info->flags = 0;
+ *store_mfn = page_array[start_info->store_mfn];
+ start_info->store_evtchn = store_evtchn;
+ *console_mfn = page_array[start_info->console_mfn];
+ start_info->console_evtchn = console_evtchn;
+ munmap(start_info, PAGE_SIZE);
+
+ /*
+ * Safety checking of saved context:
+ * 1. user_regs is fine, as Xen checks that on context switch.
+ * 2. fpu_ctxt is fine, as it can't hurt Xen.
+ * 3. trap_ctxt needs the code selectors checked.
+ * 4. ldt base must be page-aligned, no more than 8192 ents, ...
+ * 5. gdt already done, and further checking is done by Xen.
+ * 6. check that kernel_ss is safe.
+ * 7. pt_base is already done.
+ * 8. debugregs are checked by Xen.
+ * 9. callback code selectors need checking.
+ */
+ DPRINTF("Domain ready to be built.\n");
+
+ rc = 0;
+
+ out:
+ if ((rc != 0) && (dom != 0))
+ xc_domain_destroy(xc_handle, dom);
+
+ free (page_array);
+
+ DPRINTF("Restore exit with rc=%d\n", rc);
+
+ return rc;
+}
diff -r dab0a5650e6d -r 306d7857928c tools/libxc/ia64/xc_ia64_linux_save.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/ia64/xc_ia64_linux_save.c Tue Jul 11 12:51:18 2006 -0600
@@ -0,0 +1,295 @@
+/******************************************************************************
+ * xc_ia64_linux_save.c
+ *
+ * Save the state of a running Linux session.
+ *
+ * Copyright (c) 2003, K A Fraser.
+ * Rewritten for ia64 by Tristan Gingold <tristan.gingold@xxxxxxxx>
+ */
+
+#include <inttypes.h>
+#include <time.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include "xg_private.h"
+
+/* total number of pages used by the current guest */
+static unsigned long max_pfn;
+
+static inline ssize_t
+write_exact(int fd, void *buf, size_t count)
+{
+ if (write(fd, buf, count) != count)
+ return 0;
+ return 1;
+}
+
+static int
+suspend_and_state(int (*suspend)(int), int xc_handle, int io_fd,
+ int dom, xc_dominfo_t *info)
+{
+ int i = 0;
+
+ if (!(*suspend)(dom)) {
+ ERR("Suspend request failed");
+ return -1;
+ }
+
+retry:
+
+ if (xc_domain_getinfo(xc_handle, dom, 1, info) != 1) {
+ ERR("Could not get domain info");
+ return -1;
+ }
+
+ if (info->shutdown && info->shutdown_reason == SHUTDOWN_suspend)
+ return 0; // success
+
+ if (info->paused) {
+ // try unpausing domain, wait, and retest
+ xc_domain_unpause(xc_handle, dom);
+
+ ERR("Domain was paused. Wait and re-test.");
+ usleep(10000); // 10ms
+
+ goto retry;
+ }
+
+
+ if(++i < 100) {
+ ERR("Retry suspend domain.");
+ usleep(10000); // 10ms
+ goto retry;
+ }
+
+ ERR("Unable to suspend domain.");
+
+ return -1;
+}
+
+int
+xc_linux_save(int xc_handle, int io_fd, uint32_t dom, uint32_t max_iters,
+ uint32_t max_factor, uint32_t flags, int (*suspend)(int))
+{
+ DECLARE_DOM0_OP;
+ xc_dominfo_t info;
+
+ int rc = 1;
+ unsigned long N;
+
+ //int live = (flags & XCFLAGS_LIVE);
+ int debug = (flags & XCFLAGS_DEBUG);
+
+ /* The new domain's shared-info frame number. */
+ unsigned long shared_info_frame;
+
+ /* A copy of the CPU context of the guest. */
+ vcpu_guest_context_t ctxt;
+
+ unsigned long *page_array = NULL;
+
+ /* Live mapping of shared info structure */
+ shared_info_t *live_shinfo = NULL;
+
+ char *mem;
+
+ if (debug)
+ fprintf (stderr, "xc_linux_save (ia64): started dom=%d\n", dom);
+
+ if (xc_domain_getinfo(xc_handle, dom, 1, &info) != 1) {
+ ERR("Could not get domain info");
+ return 1;
+ }
+
+ shared_info_frame = info.shared_info_frame;
+
+#if 0
+ /* cheesy sanity check */
+ if ((info.max_memkb >> (PAGE_SHIFT - 10)) > max_mfn) {
+ ERR("Invalid state record -- pfn count out of range: %lu",
+ (info.max_memkb >> (PAGE_SHIFT - 10)));
+ goto out;
+ }
+#endif
+
+ /* Map the shared info frame */
+ live_shinfo = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ, shared_info_frame);
+ if (!live_shinfo) {
+ ERR("Couldn't map live_shinfo");
+ goto out;
+ }
+
+ max_pfn = info.max_memkb >> (PAGE_SHIFT - 10);
+
+
+ /* This is a non-live suspend. Issue the call back to get the
+ domain suspended */
+
+ if (suspend_and_state(suspend, xc_handle, io_fd, dom, &info)) {
+ ERR("Domain appears not to have suspended");
+ goto out;
+ }
+
+ page_array = malloc(max_pfn * sizeof(unsigned long));
+ if (page_array == NULL) {
+ ERR("Could not allocate memory");
+ goto out;
+ }
+
+ if (xc_ia64_get_pfn_list(xc_handle, dom, page_array,
+ 0, max_pfn) != max_pfn) {
+ ERR("Could not get the page frame list");
+ goto out;
+ }
+
+ /* This is expected by xm restore. */
+ if (!write_exact(io_fd, &max_pfn, sizeof(unsigned long))) {
+ ERR("write: max_pfn");
+ goto out;
+ }
+
+ /* xc_linux_restore starts to read here. */
+ /* Write a version number. This can avoid searching for a stupid bug
+ if the format change.
+ The version is hard-coded, don't forget to change the restore code
+ too! */
+ N = 1;
+ if (!write_exact(io_fd, &N, sizeof(unsigned long))) {
+ ERR("write: version");
+ goto out;
+ }
+
+ op.cmd = DOM0_DOMAIN_SETUP;
+ op.u.domain_setup.domain = (domid_t)dom;
+ op.u.domain_setup.flags = XEN_DOMAINSETUP_query;
+ if (xc_dom0_op(xc_handle, &op) < 0) {
+ ERR("Could not get domain setup");
+ goto out;
+ }
+ op.u.domain_setup.domain = 0;
+ if (!write_exact(io_fd, &op.u.domain_setup, sizeof(op.u.domain_setup))) {
+ ERR("write: domain setup");
+ goto out;
+ }
+
+ /* Start writing out the saved-domain record. */
+ for (N = 0; N < max_pfn; N++) {
+ if (page_array[N] == INVALID_MFN)
+ continue;
+ if (debug)
+ fprintf (stderr, "xc_linux_save: page %lx (%lu/%lu)\n",
+ page_array[N], N, max_pfn);
+
+ if (!write_exact(io_fd, &N, sizeof(N))) {
+ ERR("write: max_pfn");
+ goto out;
+ }
+
+ mem = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ|PROT_WRITE, page_array[N]);
+ if (mem == NULL) {
+ ERR("cannot map page");
+ goto out;
+ }
+ if (write(io_fd, mem, PAGE_SIZE) != PAGE_SIZE) {
+ ERR("Error when writing to state file (5)");
+ goto out;
+ }
+ munmap(mem, PAGE_SIZE);
+ }
+
+ fprintf (stderr, "All memory is saved\n");
+
+ /* terminate */
+ N = INVALID_MFN;
+ if (!write_exact(io_fd, &N, sizeof(N))) {
+ ERR("Error when writing to state file (6)");
+ goto out;
+ }
+
+ /* Send through a list of all the PFNs that were not in map at the close */
+ {
+ unsigned int i,j;
+ unsigned long pfntab[1024];
+
+ for (i = 0, j = 0; i < max_pfn; i++) {
+ if (page_array[i] == INVALID_MFN)
+ j++;
+ }
+
+ if (!write_exact(io_fd, &j, sizeof(unsigned int))) {
+ ERR("Error when writing to state file (6a)");
+ goto out;
+ }
+
+ for (i = 0, j = 0; i < max_pfn; ) {
+
+ if (page_array[i] == INVALID_MFN)
+ pfntab[j++] = i;
+
+ i++;
+ if (j == 1024 || i == max_pfn) {
+ if (!write_exact(io_fd, &pfntab, sizeof(unsigned long)*j)) {
+ ERR("Error when writing to state file (6b)");
+ goto out;
+ }
+ j = 0;
+ }
+ }
+
+ }
+
+ if (xc_vcpu_getcontext(xc_handle, dom, 0, &ctxt)) {
+ ERR("Could not get vcpu context");
+ goto out;
+ }
+
+ if (!write_exact(io_fd, &ctxt, sizeof(ctxt))) {
+ ERR("Error when writing to state file (1)");
+ goto out;
+ }
+
+ mem = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ|PROT_WRITE, ctxt.privregs_pfn);
+ if (mem == NULL) {
+ ERR("cannot map privreg page");
+ goto out;
+ }
+ if (write(io_fd, mem, PAGE_SIZE) != PAGE_SIZE) {
+ ERR("Error when writing privreg to state file (5)");
+ goto out;
+ }
+ munmap(mem, PAGE_SIZE);
+
+ if (!write_exact(io_fd, live_shinfo, PAGE_SIZE)) {
+ ERR("Error when writing to state file (1)");
+ goto out;
+ }
+
+ /* Success! */
+ rc = 0;
+
+ out:
+
+ free (page_array);
+
+ if (live_shinfo)
+ munmap(live_shinfo, PAGE_SIZE);
+
+ fprintf(stderr,"Save exit rc=%d\n",rc);
+
+ return !!rc;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
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