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[kvm-ia64-devel] [PATCH 26/50] ia64/pv_ops: introduce pv_init_ops and its hooks.
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From: Isaku Y. <yam...@va...> - 2008-03-05 18:19:23
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Signed-off-by: Isaku Yamahata <yam...@va...>
---
arch/ia64/kernel/module.c | 32 +++++++++++
arch/ia64/kernel/paravirt.c | 8 +++
arch/ia64/kernel/setup.c | 14 +++++
arch/ia64/kernel/smpboot.c | 2 +
include/asm-ia64/paravirt.h | 122 ++++++++++++++++++++++++++++++++++++++++++-
5 files changed, 177 insertions(+), 1 deletions(-)
diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
index e58f436..edf7cca 100644
--- a/arch/ia64/kernel/module.c
+++ b/arch/ia64/kernel/module.c
@@ -454,6 +454,14 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
mod->arch.opd = s;
else if (strcmp(".IA_64.unwind", secstrings + s->sh_name) == 0)
mod->arch.unwind = s;
+#ifdef CONFIG_PARAVIRT_ALT
+ else if (strcmp(".paravirt_bundles",
+ secstrings + s->sh_name) == 0)
+ mod->arch.paravirt_bundles = s;
+ else if (strcmp(".paravirt_insts",
+ secstrings + s->sh_name) == 0)
+ mod->arch.paravirt_insts = s;
+#endif
if (!mod->arch.core_plt || !mod->arch.init_plt || !mod->arch.got || !mod->arch.opd) {
printk(KERN_ERR "%s: sections missing\n", mod->name);
@@ -929,6 +937,30 @@ module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mo
DEBUGP("%s: init: entry=%p\n", __FUNCTION__, mod->init);
if (mod->arch.unwind)
register_unwind_table(mod);
+#ifdef CONFIG_PARAVIRT_ALT
+ if (mod->arch.paravirt_bundles) {
+ struct paravirt_alt_bundle_patch *start =
+ (struct paravirt_alt_bundle_patch *)
+ mod->arch.paravirt_bundles->sh_addr;
+ struct paravirt_alt_bundle_patch *end =
+ (struct paravirt_alt_bundle_patch *)
+ (mod->arch.paravirt_bundles->sh_addr +
+ mod->arch.paravirt_bundles->sh_size);
+
+ paravirt_bundle_patch_module(start, end);
+ }
+ if (mod->arch.paravirt_insts) {
+ struct paravirt_alt_inst_patch *start =
+ (struct paravirt_alt_inst_patch *)
+ mod->arch.paravirt_insts->sh_addr;
+ struct paravirt_alt_inst_patch *end =
+ (struct paravirt_alt_inst_patch *)
+ (mod->arch.paravirt_insts->sh_addr +
+ mod->arch.paravirt_insts->sh_size);
+
+ paravirt_inst_patch_module(start, end);
+ }
+#endif
return 0;
}
diff --git a/arch/ia64/kernel/paravirt.c b/arch/ia64/kernel/paravirt.c
index b31fa91..4282b00 100644
--- a/arch/ia64/kernel/paravirt.c
+++ b/arch/ia64/kernel/paravirt.c
@@ -32,3 +32,11 @@ struct pv_info pv_info = {
.paravirt_enabled = 0,
.name = "bare hardware"
};
+
+/***************************************************************************
+ * pv_init_ops
+ * initialization hooks.
+ */
+
+struct pv_init_ops pv_init_ops;
+
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index ebd1a09..bfccf54 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -51,6 +51,7 @@
#include <asm/mca.h>
#include <asm/meminit.h>
#include <asm/page.h>
+#include <asm/paravirt.h>
#include <asm/patch.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -288,6 +289,8 @@ reserve_memory (void)
rsvd_region[n].end = (unsigned long) ia64_imva(_end);
n++;
+ n += paravirt_reserve_memory(&rsvd_region[n]);
+
#ifdef CONFIG_BLK_DEV_INITRD
if (ia64_boot_param->initrd_start) {
rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start);
@@ -466,6 +469,8 @@ setup_arch (char **cmdline_p)
{
unw_init();
+ paravirt_arch_setup_early();
+
ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist);
*cmdline_p = __va(ia64_boot_param->command_line);
@@ -518,6 +523,9 @@ setup_arch (char **cmdline_p)
acpi_boot_init();
#endif
+ paravirt_banner();
+ paravirt_arch_setup_console(cmdline_p);
+
#ifdef CONFIG_VT
if (!conswitchp) {
# if defined(CONFIG_DUMMY_CONSOLE)
@@ -537,11 +545,15 @@ setup_arch (char **cmdline_p)
#endif
/* enable IA-64 Machine Check Abort Handling unless disabled */
+ if (paravirt_arch_setup_nomca())
+ nomca = 1;
if (!nomca)
ia64_mca_init();
platform_setup(cmdline_p);
+ paravirt_post_platform_setup();
paging_init();
+ paravirt_post_paging_init();
}
/*
@@ -969,6 +981,8 @@ cpu_init (void)
max_num_phys_stacked = num_phys_stacked;
}
platform_cpu_init();
+ paravirt_cpu_init();
+
pm_idle = default_idle;
}
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 32ee597..e7ce751 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -50,6 +50,7 @@
#include <asm/machvec.h>
#include <asm/mca.h>
#include <asm/page.h>
+#include <asm/paravirt.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@@ -642,6 +643,7 @@ void __devinit smp_prepare_boot_cpu(void)
cpu_set(smp_processor_id(), cpu_online_map);
cpu_set(smp_processor_id(), cpu_callin_map);
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
+ paravirt_post_smp_prepare_boot_cpu();
}
#ifdef CONFIG_HOTPLUG_CPU
diff --git a/include/asm-ia64/paravirt.h b/include/asm-ia64/paravirt.h
index c2d4809..dd585fc 100644
--- a/include/asm-ia64/paravirt.h
+++ b/include/asm-ia64/paravirt.h
@@ -28,6 +28,8 @@
#ifndef __ASSEMBLY__
+#include <asm/meminit.h>
+
/******************************************************************************
* general info
*/
@@ -49,12 +51,130 @@ 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_platform_setup)(void);
+ void (*post_paging_init)(void);
+
+ void (*cpu_init)(void);
+
+
+ void (*post_smp_prepare_boot_cpu)(void);
+
+ void (*bundle_patch_module)(struct paravirt_alt_bundle_patch *start,
+ struct paravirt_alt_bundle_patch *end);
+ void (*inst_patch_module)(struct paravirt_alt_inst_patch *start,
+ struct paravirt_alt_inst_patch *end);
+};
+
+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_platform_setup(void)
+{
+ if (pv_init_ops.post_platform_setup)
+ pv_init_ops.post_platform_setup();
+}
+
+static inline void paravirt_post_paging_init(void)
+{
+ if (pv_init_ops.post_paging_init)
+ pv_init_ops.post_paging_init();
+}
+
+static inline void paravirt_cpu_init(void)
+{
+ if (pv_init_ops.cpu_init)
+ pv_init_ops.cpu_init();
+}
+
+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();
+}
+
+static inline void
+paravirt_bundle_patch_module(struct paravirt_alt_bundle_patch *start,
+ struct paravirt_alt_bundle_patch *end)
+{
+ if (pv_init_ops.bundle_patch_module)
+ pv_init_ops.bundle_patch_module(start, end);
+}
+
+static inline void
+paravirt_inst_patch_module(struct paravirt_alt_inst_patch *start,
+ struct paravirt_alt_inst_patch *end)
+{
+ if (pv_init_ops.inst_patch_module)
+ pv_init_ops.inst_patch_module(start, end);
+}
+
#endif /* __ASSEMBLY__ */
#else
/* fallback for native case */
-/* XXX: TODO */
+#ifdef __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_platform_setup() do { } while (0)
+#define paravirt_post_paging_init() do { } while (0)
+#define paravirt_cpu_init() do { } while (0)
+#define paravirt_post_smp_prepare_boot_cpu() do { } while (0)
+
+#define paravirt_bundle_patch_module(start, end) do { } while (0)
+#define paravirt_inst_patch_module(start, end) do { } while (0)
+
+#endif /* __ASSEMBLY__ */
+
#endif /* CONFIG_PARAVIRT_GUEST */
--
1.5.3
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