Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (25 commits)
  mmtimer: Push BKL down into the ioctl handler
  [IA64] Remove experimental status of kdump
  [IA64] Update ia64 mmr list for SGI uv
  [IA64] Avoid overflowing ia64_cpu_to_sapicid in acpi_map_lsapic()
  [IA64] adding parameter check to module_free()
  [IA64] improper printk format in acpi-cpufreq
  [IA64] pv_ops: move some functions in ivt.S to avoid lack of space.
  [IA64] pvops: documentation on ia64/pv_ops
  [IA64] pvops: add to hooks, pv_time_ops, for steal time accounting.
  [IA64] pvops: add hooks, pv_irq_ops, to paravirtualized irq related operations.
  [IA64] pvops: add hooks, pv_iosapic_ops, to paravirtualize iosapic.
  [IA64] pvops: define initialization hooks, pv_init_ops, for paravirtualized environment.
  [IA64] pvops: paravirtualize NR_IRQS
  [IA64] pvops: paravirtualize entry.S
  [IA64] pvops: paravirtualize ivt.S
  [IA64] pvops: paravirtualize minstate.h.
  [IA64] pvops: define paravirtualized instructions for native.
  [IA64] pvops: preparation for paravirtulization of hand written assembly code.
  [IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.
  [IA64] pvops: add an early setup hook for pv_ops.
  ...

1 files changed, 255 insertions, 0 deletions

diff --git a/include/asm-ia64/paravirt.h b/include/asm-ia64/paravirt.h
new file mode 100644
index 0000000..1b4df12
--- /dev/null
+++ b/include/asm-ia64/paravirt.h
@@ -0,0 +1,255 @@
+/******************************************************************************
+ * include/asm-ia64/paravirt.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+
+#ifndef __ASM_PARAVIRT_H
+#define __ASM_PARAVIRT_H
+
+#ifdef CONFIG_PARAVIRT_GUEST
+
+#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT	0
+#define PARAVIRT_HYPERVISOR_TYPE_XEN		1
+
+#ifndef __ASSEMBLY__
+
+#include <asm/hw_irq.h>
+#include <asm/meminit.h>
+
+/******************************************************************************
+ * general info
+ */
+struct pv_info {
+	unsigned int kernel_rpl;
+	int paravirt_enabled;
+	const char *name;
+};
+
+extern struct pv_info pv_info;
+
+static inline int paravirt_enabled(void)
+{
+	return pv_info.paravirt_enabled;
+}
+
+static inline unsigned int get_kernel_rpl(void)
+{
+	return pv_info.kernel_rpl;
+}
+
+/******************************************************************************
+ * initialization hooks.
+ */
+struct rsvd_region;
+
+struct pv_init_ops {
+	void (*banner)(void);
+
+	int (*reserve_memory)(struct rsvd_region *region);
+
+	void (*arch_setup_early)(void);
+	void (*arch_setup_console)(char **cmdline_p);
+	int (*arch_setup_nomca)(void);
+
+	void (*post_smp_prepare_boot_cpu)(void);
+};
+
+extern struct pv_init_ops pv_init_ops;
+
+static inline void paravirt_banner(void)
+{
+	if (pv_init_ops.banner)
+		pv_init_ops.banner();
+}
+
+static inline int paravirt_reserve_memory(struct rsvd_region *region)
+{
+	if (pv_init_ops.reserve_memory)
+		return pv_init_ops.reserve_memory(region);
+	return 0;
+}
+
+static inline void paravirt_arch_setup_early(void)
+{
+	if (pv_init_ops.arch_setup_early)
+		pv_init_ops.arch_setup_early();
+}
+
+static inline void paravirt_arch_setup_console(char **cmdline_p)
+{
+	if (pv_init_ops.arch_setup_console)
+		pv_init_ops.arch_setup_console(cmdline_p);
+}
+
+static inline int paravirt_arch_setup_nomca(void)
+{
+	if (pv_init_ops.arch_setup_nomca)
+		return pv_init_ops.arch_setup_nomca();
+	return 0;
+}
+
+static inline void paravirt_post_smp_prepare_boot_cpu(void)
+{
+	if (pv_init_ops.post_smp_prepare_boot_cpu)
+		pv_init_ops.post_smp_prepare_boot_cpu();
+}
+
+/******************************************************************************
+ * replacement of iosapic operations.
+ */
+
+struct pv_iosapic_ops {
+	void (*pcat_compat_init)(void);
+
+	struct irq_chip *(*get_irq_chip)(unsigned long trigger);
+
+	unsigned int (*__read)(char __iomem *iosapic, unsigned int reg);
+	void (*__write)(char __iomem *iosapic, unsigned int reg, u32 val);
+};
+
+extern struct pv_iosapic_ops pv_iosapic_ops;
+
+static inline void
+iosapic_pcat_compat_init(void)
+{
+	if (pv_iosapic_ops.pcat_compat_init)
+		pv_iosapic_ops.pcat_compat_init();
+}
+
+static inline struct irq_chip*
+iosapic_get_irq_chip(unsigned long trigger)
+{
+	return pv_iosapic_ops.get_irq_chip(trigger);
+}
+
+static inline unsigned int
+__iosapic_read(char __iomem *iosapic, unsigned int reg)
+{
+	return pv_iosapic_ops.__read(iosapic, reg);
+}
+
+static inline void
+__iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
+{
+	return pv_iosapic_ops.__write(iosapic, reg, val);
+}
+
+/******************************************************************************
+ * replacement of irq operations.
+ */
+
+struct pv_irq_ops {
+	void (*register_ipi)(void);
+
+	int (*assign_irq_vector)(int irq);
+	void (*free_irq_vector)(int vector);
+
+	void (*register_percpu_irq)(ia64_vector vec,
+				    struct irqaction *action);
+
+	void (*resend_irq)(unsigned int vector);
+};
+
+extern struct pv_irq_ops pv_irq_ops;
+
+static inline void
+ia64_register_ipi(void)
+{
+	pv_irq_ops.register_ipi();
+}
+
+static inline int
+assign_irq_vector(int irq)
+{
+	return pv_irq_ops.assign_irq_vector(irq);
+}
+
+static inline void
+free_irq_vector(int vector)
+{
+	return pv_irq_ops.free_irq_vector(vector);
+}
+
+static inline void
+register_percpu_irq(ia64_vector vec, struct irqaction *action)
+{
+	pv_irq_ops.register_percpu_irq(vec, action);
+}
+
+static inline void
+ia64_resend_irq(unsigned int vector)
+{
+	pv_irq_ops.resend_irq(vector);
+}
+
+/******************************************************************************
+ * replacement of time operations.
+ */
+
+extern struct itc_jitter_data_t itc_jitter_data;
+extern volatile int time_keeper_id;
+
+struct pv_time_ops {
+	void (*init_missing_ticks_accounting)(int cpu);
+	int (*do_steal_accounting)(unsigned long *new_itm);
+
+	void (*clocksource_resume)(void);
+};
+
+extern struct pv_time_ops pv_time_ops;
+
+static inline void
+paravirt_init_missing_ticks_accounting(int cpu)
+{
+	if (pv_time_ops.init_missing_ticks_accounting)
+		pv_time_ops.init_missing_ticks_accounting(cpu);
+}
+
+static inline int
+paravirt_do_steal_accounting(unsigned long *new_itm)
+{
+	return pv_time_ops.do_steal_accounting(new_itm);
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#else
+/* fallback for native case */
+
+#ifndef __ASSEMBLY__
+
+#define paravirt_banner()				do { } while (0)
+#define paravirt_reserve_memory(region)			0
+
+#define paravirt_arch_setup_early()			do { } while (0)
+#define paravirt_arch_setup_console(cmdline_p)		do { } while (0)
+#define paravirt_arch_setup_nomca()			0
+#define paravirt_post_smp_prepare_boot_cpu()		do { } while (0)
+
+#define paravirt_init_missing_ticks_accounting(cpu)	do { } while (0)
+#define paravirt_do_steal_accounting(new_itm)		0
+
+#endif /* __ASSEMBLY__ */
+
+
+#endif /* CONFIG_PARAVIRT_GUEST */
+
+#endif /* __ASM_PARAVIRT_H */