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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [XenPPC][Patch] Kernel patch for xm save/restore
diff -r f4d382795e57 arch/powerpc/platforms/xen/hcall.c
--- a/arch/powerpc/platforms/xen/hcall.c Wed Oct 25 17:22:54 2006 -0400
+++ b/arch/powerpc/platforms/xen/hcall.c Fri Oct 13 13:56:04 2006 -0500
@@ -256,6 +256,7 @@ static int xenppc_privcmd_domctl(privcmd
case XEN_DOMCTL_pausedomain:
case XEN_DOMCTL_unpausedomain:
case XEN_DOMCTL_getdomaininfo:
+ case XEN_DOMCTL_getshadowlist:
break;
case XEN_DOMCTL_getmemlist:
ret = xencomm_create(
diff -r f4d382795e57 arch/powerpc/platforms/xen/reboot.c
--- a/arch/powerpc/platforms/xen/reboot.c Wed Oct 25 17:22:54 2006 -0400
+++ b/arch/powerpc/platforms/xen/reboot.c Wed Nov 01 17:11:58 2006 -0500
@@ -1,9 +1,19 @@
#include <linux/module.h>
+#include <linux/kernel.h>
#include <xen/interface/xen.h>
#include <xen/interface/io/console.h>
#include <xen/xencons.h>
#include <asm/hypervisor.h>
#include <asm/machdep.h>
+#include <asm/mmu_context.h>
+#include <xen/cpu_hotplug.h>
+#include <xen/xenbus.h>
+#include <xen/gnttab.h>
+#include <xen/evtchn.h>
+
+#define SHUTDOWN_INVALID -1
+
+static int shutting_down ;
static void domain_machine_restart(char * __unused)
{
@@ -31,3 +41,86 @@ void xen_reboot_init(struct machdep_call
ppc_md.halt = domain_machine_power_off;
}
}
+
+static void switch_idle_mm(void)
+{
+ struct mm_struct *mm = current->active_mm;
+
+ if (mm == &init_mm)
+ return;
+
+ atomic_inc(&init_mm.mm_count);
+ switch_mm(mm, &init_mm, current);
+ current->active_mm = &init_mm;
+ mmdrop(mm);
+}
+
+int ppc_do_suspend(void *ignore)
+{
+ int err;
+ enum system_states temp_state;
+
+ BUG_ON(smp_processor_id() != 0);
+ BUG_ON(in_interrupt());
+
+#ifndef CONFIG_PPC_XEN
+ 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)
+ return err;
+
+ xenbus_suspend();
+
+ preempt_disable();
+
+ __cli();
+
+ temp_state = system_state;
+ system_state = SYSTEM_SUSPEND_DISK;
+
+ preempt_enable();
+
+ gnttab_suspend();
+
+ HYPERVISOR_shared_info = (shared_info_t *)empty_zero_page;
+
+ 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);
+
+ /*
+ * We'll stop somewhere inside this hypercall. When it returns,
+ * we'll start resuming after the restore.
+ */
+ HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
+
+ shutting_down = SHUTDOWN_INVALID;
+
+ printk("Here we're resuming \n"); //DEBUG
+
+ HYPERVISOR_shared_info = (shared_info_t
*)__va(xen_start_info->shared_info);
+ memset(empty_zero_page, 0, PAGE_SIZE);
+
+ gnttab_resume();
+
+ irq_resume();
+
+ switch_idle_mm();
+
+ system_state = temp_state;
+
+ __sti();
+
+ xencons_resume();
+
+ xenbus_resume();
+
+ smp_resume();
+
+ return err;
+}
+
diff -r f4d382795e57 drivers/xen/core/reboot.c
--- a/drivers/xen/core/reboot.c Wed Oct 25 17:22:54 2006 -0400
+++ b/drivers/xen/core/reboot.c Wed Nov 01 17:14:40 2006 -0500
@@ -151,7 +151,7 @@ static int __do_suspend(void *ignore)
HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
shutting_down = SHUTDOWN_INVALID;
-
+
set_fixmap(FIX_SHARED_INFO, xen_start_info->shared_info);
HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO);
@@ -192,13 +192,15 @@ static int __do_suspend(void *ignore)
return err;
}
-#else /* CONFIG_PPC_XEN */
+
+#else
+int ppc_do_suspend(void *ignore);
static int __do_suspend(void *ignore)
{
printk("SUSPEND!!??\n");
- return 0;
-}
-#endif /* CONFIG_PPC_XEN */
+ return ppc_do_suspend(ignore);
+}
+#endif
static int shutdown_process(void *__unused)
{
diff -r f4d382795e57 include/asm-powerpc/system.h
--- a/include/asm-powerpc/system.h Wed Oct 25 17:22:54 2006 -0400
+++ b/include/asm-powerpc/system.h Thu Oct 05 15:13:38 2006 -0500
@@ -433,5 +433,12 @@ extern void account_system_vtime(struct
extern void account_system_vtime(struct task_struct *);
#endif
+#ifndef __cli
+
+#define __cli() local_irq_disable()
+#define __sti() local_irq_enable()
+#endif /* __cli */
+
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SYSTEM_H */
diff -r f4d382795e57 include/asm-powerpc/xen/asm/hypercall.h
--- a/include/asm-powerpc/xen/asm/hypercall.h Wed Oct 25 17:22:54 2006 -0400
+++ b/include/asm-powerpc/xen/asm/hypercall.h Thu Oct 05 15:16:40 2006 -0500
@@ -60,6 +60,16 @@ static inline int HYPERVISOR_shutdown(un
return HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
}
+
+static inline int HYPERVISOR_suspend(unsigned long srec)
+{
+ struct sched_shutdown sched_shutdown = {
+ .reason = SHUTDOWN_suspend
+ };
+
+ return HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
+}
+
static inline int HYPERVISOR_set_timer_op(unsigned long arg)
{
return plpar_hcall_norets(XEN_MARK(__HYPERVISOR_set_timer_op), arg);
diff -r f4d382795e57 include/xen/interface/arch-powerpc.h
--- a/include/xen/interface/arch-powerpc.h Wed Oct 25 17:22:54 2006 -0400
+++ b/include/xen/interface/arch-powerpc.h Wed Nov 01 16:16:35 2006 -0500
@@ -29,7 +29,6 @@
#define DEFINE_XEN_GUEST_HANDLE(name) __DEFINE_XEN_GUEST_HANDLE(name,
name)
#define XEN_GUEST_HANDLE(name) __guest_handle_ ## name
-#define XEN_GUEST_HANDLE_64(name) __guest_handle_ ## name
#define set_xen_guest_handle(hnd, val) \
do { \
if (sizeof ((hnd).__pad)) \
@@ -42,9 +41,6 @@
#endif
#ifndef __ASSEMBLY__
-
-typedef uint64_t uint64_aligned_t;
-
/* Guest handles for primitive C types. */
__DEFINE_XEN_GUEST_HANDLE(uchar, unsigned char);
__DEFINE_XEN_GUEST_HANDLE(uint, unsigned int);
@@ -98,11 +94,66 @@ typedef struct cpu_user_regs cpu_user_re
typedef uint64_t tsc_timestamp_t; /* RDTSC timestamp */ /* XXX timebase */
+#define NUM_SLB_ENTRIES 64
+struct slb_entry {
+ uint64_t slb_vsid;
+ uint64_t slb_esid;
+};
+typedef struct slb_entry slb_entry_t;
+
+#ifndef HAS_VMX
+#define HAS_VMX 1
+#endif
+
+#ifndef HAS_FLOAT
+#define HAS_FLOAT 1
+#endif
+
+#ifdef HAS_VMX
+typedef struct {
+ uint32_t u[4];
+} __attribute__((aligned(16))) _vector128;
+#endif /* HAS_VMX */
+
+
/* ONLY used to communicate with dom0! See also struct exec_domain. */
struct vcpu_guest_context {
cpu_user_regs_t user_regs; /* User-level CPU registers */
+ slb_entry_t slb_entries[NUM_SLB_ENTRIES]; /* Segment
Lookaside Buffer */
+
+ /* Special-Purpose Registers */
+ uint64_t sprg[4];
+ uint64_t timebase;
+ uint64_t dar;
+ uint64_t dsisr;
+
+ struct cpu_vcpu_tag {
+ uint64_t hid4;
+ } cpu; /* CPU-specific bits */
+
+ uint32_t dec;
+
+ /* XXX etc */
+#ifdef HAS_FLOAT
+#define NUM_FPRS 32
+ double fprs[NUM_FPRS];
+#endif
+#ifdef HAS_VMX
+ _vector128 vrs[32];
+ _vector128 vscr;
+ uint32_t vrsave;
+#endif
+
+#if 0
+ struct xencomm *xencomm;
+
+ /* I/O-port access bitmap. */
+ u8 *iobmp; /* Guest kernel virtual address of the bitmap. */
+ int iobmp_limit; /* Number of ports represented in the bitmap. */
+ int iopl; /* Current IOPL for this VCPU. */
+#endif
+
uint64_t sdr1; /* Pagetable base */
- /* XXX etc */
};
typedef struct vcpu_guest_context vcpu_guest_context_t;
DEFINE_XEN_GUEST_HANDLE(vcpu_guest_context_t);
diff -r f4d382795e57 include/xen/interface/domctl.h
--- a/include/xen/interface/domctl.h Wed Oct 25 17:22:54 2006 -0400
+++ b/include/xen/interface/domctl.h Fri Oct 13 14:28:14 2006 -0500
@@ -354,6 +354,17 @@ struct xen_domctl_real_mode_area {
};
typedef struct xen_domctl_real_mode_area xen_domctl_real_mode_area_t;
DEFINE_XEN_GUEST_HANDLE(xen_domctl_real_mode_area_t);
+
+#define XEN_DOMCTL_getshadowlist 29
+struct xen_domctl_getshadowlist {
+ /* OUT variables. */
+ /* Start of htab array */
+ uint64_t htab_map;
+ /* Numver of ptes within htab */
+ uint htab_num_ptes;
+};
+typedef struct xen_domctl_getshadowlist xen_domctl_getshadowlist_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domctl_getshadowlist_t);
struct xen_domctl {
uint32_t cmd;
@@ -381,6 +392,7 @@ struct xen_domctl {
struct xen_domctl_arch_setup arch_setup;
struct xen_domctl_settimeoffset settimeoffset;
struct xen_domctl_real_mode_area real_mode_area;
+ struct xen_domctl_getshadowlist getshadowlist;
uint8_t pad[128];
} u;
};
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