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Subject[PATCH 01/12] paravirt: refactor struct paravirt_ops into smaller pv_*_ops
This patch refactors the paravirt_ops structure into groups of
functionally related ops:

pv_info - random info, rather than function entrypoints
pv_init_ops - functions used at boot time (some for module_init too)
pv_misc_ops - lazy mode, which didn't fit well anywhere else
pv_time_ops - time-related functions
pv_cpu_ops - various privileged instruction ops
pv_irq_ops - operations for managing interrupt state
pv_apic_ops - APIC operations
pv_mmu_ops - operations for managing pagetables

There are several motivations for this:

1. Some of these ops will be general to all x86, and some will be
i386/x86-64 specific. This makes it easier to share common stuff
while allowing separate implementations where needed.

2. At the moment we must export all of paravirt_ops, but modules only
need selected parts of it. This allows us to export on a case by case
basis (and also choose which export license we want to apply).

3. Functional groupings make things a bit more readable.

Struct paravirt_ops is now only used as a template to generate
patch-site identifiers, and to extract function pointers for inserting
into jmp/calls when patching. It is only instantiated when needed.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Cc: Zach Amsden <zach@vmware.com>
Cc: Avi Kivity <avi@qumranet.com>
Cc: Anthony Liguory <aliguori@us.ibm.com>
Cc: "Glauber de Oliveira Costa" <glommer@gmail.com>
Cc: Jun Nakajima <jun.nakajima@intel.com>
---
arch/x86/kernel/alternative.c | 4
arch/x86/kernel/asm-offsets_32.c | 14
arch/x86/kernel/entry_32.S | 2
arch/x86/kernel/paravirt_32.c | 182 +++++++-----
arch/x86/kernel/vmi_32.c | 168 +++++------
arch/x86/xen/enlighten.c | 152 ++++++----
drivers/char/hvc_lguest.c | 2
drivers/lguest/core.c | 6
drivers/lguest/lguest.c | 124 ++++----
drivers/lguest/lguest_bus.c | 2
include/asm-x86/paravirt.h | 477 ++++++++++++++++++---------------
include/asm-x86/pgtable-3level-defs.h | 2
12 files changed, 630 insertions(+), 505 deletions(-)
===================================================================
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -369,8 +369,8 @@ void apply_paravirt(struct paravirt_patc
BUG_ON(p->len > MAX_PATCH_LEN);
/* prep the buffer with the original instructions */
memcpy(insnbuf, p->instr, p->len);
- used = paravirt_ops.patch(p->instrtype, p->clobbers, insnbuf,
- (unsigned long)p->instr, p->len);
+ used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf,
+ (unsigned long)p->instr, p->len);

BUG_ON(used > p->len);

===================================================================
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -116,12 +116,14 @@ void foo(void)

#ifdef CONFIG_PARAVIRT
BLANK();
- OFFSET(PARAVIRT_enabled, paravirt_ops, paravirt_enabled);
- OFFSET(PARAVIRT_irq_disable, paravirt_ops, irq_disable);
- OFFSET(PARAVIRT_irq_enable, paravirt_ops, irq_enable);
- OFFSET(PARAVIRT_irq_enable_sysexit, paravirt_ops, irq_enable_sysexit);
- OFFSET(PARAVIRT_iret, paravirt_ops, iret);
- OFFSET(PARAVIRT_read_cr0, paravirt_ops, read_cr0);
+ OFFSET(PARAVIRT_enabled, pv_info, paravirt_enabled);
+ OFFSET(PARAVIRT_PATCH_pv_cpu_ops, paravirt_patch_template, pv_cpu_ops);
+ OFFSET(PARAVIRT_PATCH_pv_irq_ops, paravirt_patch_template, pv_irq_ops);
+ OFFSET(PV_IRQ_irq_disable, pv_irq_ops, irq_disable);
+ OFFSET(PV_IRQ_irq_enable, pv_irq_ops, irq_enable);
+ OFFSET(PV_CPU_iret, pv_cpu_ops, iret);
+ OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit);
+ OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0);
#endif

#ifdef CONFIG_XEN
===================================================================
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -434,7 +434,7 @@ ldt_ss:
* is still available to implement the setting of the high
* 16-bits in the INTERRUPT_RETURN paravirt-op.
*/
- cmpl $0, paravirt_ops+PARAVIRT_enabled
+ cmpl $0, pv_info+PARAVIRT_enabled
jne restore_nocheck
#endif

===================================================================
--- a/arch/x86/kernel/paravirt_32.c
+++ b/arch/x86/kernel/paravirt_32.c
@@ -42,32 +42,33 @@ static void __init default_banner(void)
static void __init default_banner(void)
{
printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
- paravirt_ops.name);
+ pv_info.name);
}

char *memory_setup(void)
{
- return paravirt_ops.memory_setup();
+ return pv_init_ops.memory_setup();
}

/* Simple instruction patching code. */
-#define DEF_NATIVE(name, code) \
- extern const char start_##name[], end_##name[]; \
- asm("start_" #name ": " code "; end_" #name ":")
-
-DEF_NATIVE(irq_disable, "cli");
-DEF_NATIVE(irq_enable, "sti");
-DEF_NATIVE(restore_fl, "push %eax; popf");
-DEF_NATIVE(save_fl, "pushf; pop %eax");
-DEF_NATIVE(iret, "iret");
-DEF_NATIVE(irq_enable_sysexit, "sti; sysexit");
-DEF_NATIVE(read_cr2, "mov %cr2, %eax");
-DEF_NATIVE(write_cr3, "mov %eax, %cr3");
-DEF_NATIVE(read_cr3, "mov %cr3, %eax");
-DEF_NATIVE(clts, "clts");
-DEF_NATIVE(read_tsc, "rdtsc");
-
-DEF_NATIVE(ud2a, "ud2a");
+#define DEF_NATIVE(ops, name, code) \
+ extern const char start_##ops##_##name[], end_##ops##_##name[]; \
+ asm("start_" #ops "_" #name ": " code "; end_" #ops "_" #name ":")
+
+DEF_NATIVE(pv_irq_ops, irq_disable, "cli");
+DEF_NATIVE(pv_irq_ops, irq_enable, "sti");
+DEF_NATIVE(pv_irq_ops, restore_fl, "push %eax; popf");
+DEF_NATIVE(pv_irq_ops, save_fl, "pushf; pop %eax");
+DEF_NATIVE(pv_cpu_ops, iret, "iret");
+DEF_NATIVE(pv_cpu_ops, irq_enable_sysexit, "sti; sysexit");
+DEF_NATIVE(pv_mmu_ops, read_cr2, "mov %cr2, %eax");
+DEF_NATIVE(pv_mmu_ops, write_cr3, "mov %eax, %cr3");
+DEF_NATIVE(pv_mmu_ops, read_cr3, "mov %cr3, %eax");
+DEF_NATIVE(pv_cpu_ops, clts, "clts");
+DEF_NATIVE(pv_cpu_ops, read_tsc, "rdtsc");
+
+/* Undefined instruction for dealing with missing ops pointers. */
+static const unsigned char ud2a[] = { 0x0f, 0x0b };

static unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
unsigned long addr, unsigned len)
@@ -76,35 +77,27 @@ static unsigned native_patch(u8 type, u1
unsigned ret;

switch(type) {
-#define SITE(x) case PARAVIRT_PATCH(x): start = start_##x; end = end_##x; goto patch_site
- SITE(irq_disable);
- SITE(irq_enable);
- SITE(restore_fl);
- SITE(save_fl);
- SITE(iret);
- SITE(irq_enable_sysexit);
- SITE(read_cr2);
- SITE(read_cr3);
- SITE(write_cr3);
- SITE(clts);
- SITE(read_tsc);
+#define SITE(ops, x) \
+ case PARAVIRT_PATCH(ops.x): \
+ start = start_##ops##_##x; \
+ end = end_##ops##_##x; \
+ goto patch_site
+
+ SITE(pv_irq_ops, irq_disable);
+ SITE(pv_irq_ops, irq_enable);
+ SITE(pv_irq_ops, restore_fl);
+ SITE(pv_irq_ops, save_fl);
+ SITE(pv_cpu_ops, iret);
+ SITE(pv_cpu_ops, irq_enable_sysexit);
+ SITE(pv_mmu_ops, read_cr2);
+ SITE(pv_mmu_ops, read_cr3);
+ SITE(pv_mmu_ops, write_cr3);
+ SITE(pv_cpu_ops, clts);
+ SITE(pv_cpu_ops, read_tsc);
#undef SITE

patch_site:
ret = paravirt_patch_insns(ibuf, len, start, end);
- break;
-
- case PARAVIRT_PATCH(make_pgd):
- case PARAVIRT_PATCH(make_pte):
- case PARAVIRT_PATCH(pgd_val):
- case PARAVIRT_PATCH(pte_val):
-#ifdef CONFIG_X86_PAE
- case PARAVIRT_PATCH(make_pmd):
- case PARAVIRT_PATCH(pmd_val):
-#endif
- /* These functions end up returning exactly what
- they're passed, in the same registers. */
- ret = paravirt_patch_nop();
break;

default:
@@ -150,7 +143,7 @@ unsigned paravirt_patch_call(void *insnb
return 5;
}

-unsigned paravirt_patch_jmp(const void *target, void *insnbuf,
+unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
unsigned long addr, unsigned len)
{
struct branch *b = insnbuf;
@@ -165,22 +158,38 @@ unsigned paravirt_patch_jmp(const void *
return 5;
}

+/* Neat trick to map patch type back to the call within the
+ * corresponding structure. */
+static void *get_call_destination(u8 type)
+{
+ struct paravirt_patch_template tmpl = {
+ .pv_init_ops = pv_init_ops,
+ .pv_misc_ops = pv_misc_ops,
+ .pv_time_ops = pv_time_ops,
+ .pv_cpu_ops = pv_cpu_ops,
+ .pv_irq_ops = pv_irq_ops,
+ .pv_apic_ops = pv_apic_ops,
+ .pv_mmu_ops = pv_mmu_ops,
+ };
+ return *((void **)&tmpl + type);
+}
+
unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
unsigned long addr, unsigned len)
{
- void *opfunc = *((void **)&paravirt_ops + type);
+ void *opfunc = get_call_destination(type);
unsigned ret;

if (opfunc == NULL)
/* If there's no function, patch it with a ud2a (BUG) */
- ret = paravirt_patch_insns(insnbuf, len, start_ud2a, end_ud2a);
+ ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
else if (opfunc == paravirt_nop)
/* If the operation is a nop, then nop the callsite */
ret = paravirt_patch_nop();
- else if (type == PARAVIRT_PATCH(iret) ||
- type == PARAVIRT_PATCH(irq_enable_sysexit))
+ else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
+ type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit))
/* If operation requires a jmp, then jmp */
- ret = paravirt_patch_jmp(opfunc, insnbuf, addr, len);
+ ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
else
/* Otherwise call the function; assume target could
clobber any caller-save reg */
@@ -205,7 +214,7 @@ unsigned paravirt_patch_insns(void *insn

void init_IRQ(void)
{
- paravirt_ops.init_IRQ();
+ pv_irq_ops.init_IRQ();
}

static void native_flush_tlb(void)
@@ -233,7 +242,7 @@ extern void native_irq_enable_sysexit(vo

static int __init print_banner(void)
{
- paravirt_ops.banner();
+ pv_init_ops.banner();
return 0;
}
core_initcall(print_banner);
@@ -273,47 +282,53 @@ int paravirt_disable_iospace(void)
return ret;
}

-struct paravirt_ops paravirt_ops = {
+struct pv_info pv_info = {
.name = "bare hardware",
.paravirt_enabled = 0,
.kernel_rpl = 0,
.shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */
-
- .patch = native_patch,
+};
+
+struct pv_init_ops pv_init_ops = {
+ .patch = native_patch,
.banner = default_banner,
.arch_setup = paravirt_nop,
.memory_setup = machine_specific_memory_setup,
+};
+
+struct pv_time_ops pv_time_ops = {
+ .time_init = hpet_time_init,
.get_wallclock = native_get_wallclock,
.set_wallclock = native_set_wallclock,
- .time_init = hpet_time_init,
+ .sched_clock = native_sched_clock,
+ .get_cpu_khz = native_calculate_cpu_khz,
+};
+
+struct pv_irq_ops pv_irq_ops = {
.init_IRQ = native_init_IRQ,
-
+ .save_fl = native_save_fl,
+ .restore_fl = native_restore_fl,
+ .irq_disable = native_irq_disable,
+ .irq_enable = native_irq_enable,
+ .safe_halt = native_safe_halt,
+ .halt = native_halt,
+};
+
+struct pv_cpu_ops pv_cpu_ops = {
.cpuid = native_cpuid,
.get_debugreg = native_get_debugreg,
.set_debugreg = native_set_debugreg,
.clts = native_clts,
.read_cr0 = native_read_cr0,
.write_cr0 = native_write_cr0,
- .read_cr2 = native_read_cr2,
- .write_cr2 = native_write_cr2,
- .read_cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
.read_cr4 = native_read_cr4,
.read_cr4_safe = native_read_cr4_safe,
.write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
.wbinvd = native_wbinvd,
.read_msr = native_read_msr_safe,
.write_msr = native_write_msr_safe,
.read_tsc = native_read_tsc,
.read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
.load_tr_desc = native_load_tr_desc,
.set_ldt = native_set_ldt,
.load_gdt = native_load_gdt,
@@ -327,9 +342,14 @@ struct paravirt_ops paravirt_ops = {
.write_idt_entry = write_dt_entry,
.load_esp0 = native_load_esp0,

+ .irq_enable_sysexit = native_irq_enable_sysexit,
+ .iret = native_iret,
+
.set_iopl_mask = native_set_iopl_mask,
.io_delay = native_io_delay,
-
+};
+
+struct pv_apic_ops pv_apic_ops = {
#ifdef CONFIG_X86_LOCAL_APIC
.apic_write = native_apic_write,
.apic_write_atomic = native_apic_write_atomic,
@@ -338,10 +358,20 @@ struct paravirt_ops paravirt_ops = {
.setup_secondary_clock = setup_secondary_APIC_clock,
.startup_ipi_hook = paravirt_nop,
#endif
+};
+
+struct pv_misc_ops pv_misc_ops = {
.set_lazy_mode = paravirt_nop,
-
+};
+
+struct pv_mmu_ops pv_mmu_ops = {
.pagetable_setup_start = native_pagetable_setup_start,
.pagetable_setup_done = native_pagetable_setup_done,
+
+ .read_cr2 = native_read_cr2,
+ .write_cr2 = native_write_cr2,
+ .read_cr3 = native_read_cr3,
+ .write_cr3 = native_write_cr3,

.flush_tlb_user = native_flush_tlb,
.flush_tlb_kernel = native_flush_tlb_global,
@@ -381,12 +411,14 @@ struct paravirt_ops paravirt_ops = {
.make_pte = native_make_pte,
.make_pgd = native_make_pgd,

- .irq_enable_sysexit = native_irq_enable_sysexit,
- .iret = native_iret,
-
.dup_mmap = paravirt_nop,
.exit_mmap = paravirt_nop,
.activate_mm = paravirt_nop,
};

-EXPORT_SYMBOL(paravirt_ops);
+EXPORT_SYMBOL_GPL(pv_time_ops);
+EXPORT_SYMBOL_GPL(pv_cpu_ops);
+EXPORT_SYMBOL_GPL(pv_mmu_ops);
+EXPORT_SYMBOL_GPL(pv_apic_ops);
+EXPORT_SYMBOL_GPL(pv_info);
+EXPORT_SYMBOL (pv_irq_ops);
===================================================================
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -134,21 +134,21 @@ static unsigned vmi_patch(u8 type, u16 c
unsigned long eip, unsigned len)
{
switch (type) {
- case PARAVIRT_PATCH(irq_disable):
+ case PARAVIRT_PATCH(pv_irq_ops.irq_disable):
return patch_internal(VMI_CALL_DisableInterrupts, len,
insns, eip);
- case PARAVIRT_PATCH(irq_enable):
+ case PARAVIRT_PATCH(pv_irq_ops.irq_enable):
return patch_internal(VMI_CALL_EnableInterrupts, len,
insns, eip);
- case PARAVIRT_PATCH(restore_fl):
+ case PARAVIRT_PATCH(pv_irq_ops.restore_fl):
return patch_internal(VMI_CALL_SetInterruptMask, len,
insns, eip);
- case PARAVIRT_PATCH(save_fl):
+ case PARAVIRT_PATCH(pv_irq_ops.save_fl):
return patch_internal(VMI_CALL_GetInterruptMask, len,
insns, eip);
- case PARAVIRT_PATCH(iret):
+ case PARAVIRT_PATCH(pv_cpu_ops.iret):
return patch_internal(VMI_CALL_IRET, len, insns, eip);
- case PARAVIRT_PATCH(irq_enable_sysexit):
+ case PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit):
return patch_internal(VMI_CALL_SYSEXIT, len, insns, eip);
default:
break;
@@ -690,9 +690,9 @@ do { \
reloc = call_vrom_long_func(vmi_rom, get_reloc, \
VMI_CALL_##vmicall); \
if (rel->type == VMI_RELOCATION_CALL_REL) \
- paravirt_ops.opname = (void *)rel->eip; \
+ opname = (void *)rel->eip; \
else if (rel->type == VMI_RELOCATION_NOP) \
- paravirt_ops.opname = (void *)vmi_nop; \
+ opname = (void *)vmi_nop; \
else if (rel->type != VMI_RELOCATION_NONE) \
printk(KERN_WARNING "VMI: Unknown relocation " \
"type %d for " #vmicall"\n",\
@@ -712,7 +712,7 @@ do { \
VMI_CALL_##vmicall); \
BUG_ON(rel->type == VMI_RELOCATION_JUMP_REL); \
if (rel->type == VMI_RELOCATION_CALL_REL) { \
- paravirt_ops.opname = wrapper; \
+ opname = wrapper; \
vmi_ops.cache = (void *)rel->eip; \
} \
} while (0)
@@ -732,11 +732,11 @@ static inline int __init activate_vmi(vo
}
savesegment(cs, kernel_cs);

- paravirt_ops.paravirt_enabled = 1;
- paravirt_ops.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK;
-
- paravirt_ops.patch = vmi_patch;
- paravirt_ops.name = "vmi";
+ pv_info.paravirt_enabled = 1;
+ pv_info.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK;
+ pv_info.name = "vmi";
+
+ pv_init_ops.patch = vmi_patch;

/*
* Many of these operations are ABI compatible with VMI.
@@ -754,26 +754,26 @@ static inline int __init activate_vmi(vo
*/

/* CPUID is special, so very special it gets wrapped like a present */
- para_wrap(cpuid, vmi_cpuid, cpuid, CPUID);
-
- para_fill(clts, CLTS);
- para_fill(get_debugreg, GetDR);
- para_fill(set_debugreg, SetDR);
- para_fill(read_cr0, GetCR0);
- para_fill(read_cr2, GetCR2);
- para_fill(read_cr3, GetCR3);
- para_fill(read_cr4, GetCR4);
- para_fill(write_cr0, SetCR0);
- para_fill(write_cr2, SetCR2);
- para_fill(write_cr3, SetCR3);
- para_fill(write_cr4, SetCR4);
- para_fill(save_fl, GetInterruptMask);
- para_fill(restore_fl, SetInterruptMask);
- para_fill(irq_disable, DisableInterrupts);
- para_fill(irq_enable, EnableInterrupts);
-
- para_fill(wbinvd, WBINVD);
- para_fill(read_tsc, RDTSC);
+ para_wrap(pv_cpu_ops.cpuid, vmi_cpuid, cpuid, CPUID);
+
+ para_fill(pv_cpu_ops.clts, CLTS);
+ para_fill(pv_cpu_ops.get_debugreg, GetDR);
+ para_fill(pv_cpu_ops.set_debugreg, SetDR);
+ para_fill(pv_cpu_ops.read_cr0, GetCR0);
+ para_fill(pv_mmu_ops.read_cr2, GetCR2);
+ para_fill(pv_mmu_ops.read_cr3, GetCR3);
+ para_fill(pv_cpu_ops.read_cr4, GetCR4);
+ para_fill(pv_cpu_ops.write_cr0, SetCR0);
+ para_fill(pv_mmu_ops.write_cr2, SetCR2);
+ para_fill(pv_mmu_ops.write_cr3, SetCR3);
+ para_fill(pv_cpu_ops.write_cr4, SetCR4);
+ para_fill(pv_irq_ops.save_fl, GetInterruptMask);
+ para_fill(pv_irq_ops.restore_fl, SetInterruptMask);
+ para_fill(pv_irq_ops.irq_disable, DisableInterrupts);
+ para_fill(pv_irq_ops.irq_enable, EnableInterrupts);
+
+ para_fill(pv_cpu_ops.wbinvd, WBINVD);
+ para_fill(pv_cpu_ops.read_tsc, RDTSC);

/* The following we emulate with trap and emulate for now */
/* paravirt_ops.read_msr = vmi_rdmsr */
@@ -781,29 +781,29 @@ static inline int __init activate_vmi(vo
/* paravirt_ops.rdpmc = vmi_rdpmc */

/* TR interface doesn't pass TR value, wrap */
- para_wrap(load_tr_desc, vmi_set_tr, set_tr, SetTR);
+ para_wrap(pv_cpu_ops.load_tr_desc, vmi_set_tr, set_tr, SetTR);

/* LDT is special, too */
- para_wrap(set_ldt, vmi_set_ldt, _set_ldt, SetLDT);
-
- para_fill(load_gdt, SetGDT);
- para_fill(load_idt, SetIDT);
- para_fill(store_gdt, GetGDT);
- para_fill(store_idt, GetIDT);
- para_fill(store_tr, GetTR);
- paravirt_ops.load_tls = vmi_load_tls;
- para_fill(write_ldt_entry, WriteLDTEntry);
- para_fill(write_gdt_entry, WriteGDTEntry);
- para_fill(write_idt_entry, WriteIDTEntry);
- para_wrap(load_esp0, vmi_load_esp0, set_kernel_stack, UpdateKernelStack);
- para_fill(set_iopl_mask, SetIOPLMask);
- para_fill(io_delay, IODelay);
- para_wrap(set_lazy_mode, vmi_set_lazy_mode, set_lazy_mode, SetLazyMode);
+ para_wrap(pv_cpu_ops.set_ldt, vmi_set_ldt, _set_ldt, SetLDT);
+
+ para_fill(pv_cpu_ops.load_gdt, SetGDT);
+ para_fill(pv_cpu_ops.load_idt, SetIDT);
+ para_fill(pv_cpu_ops.store_gdt, GetGDT);
+ para_fill(pv_cpu_ops.store_idt, GetIDT);
+ para_fill(pv_cpu_ops.store_tr, GetTR);
+ pv_cpu_ops.load_tls = vmi_load_tls;
+ para_fill(pv_cpu_ops.write_ldt_entry, WriteLDTEntry);
+ para_fill(pv_cpu_ops.write_gdt_entry, WriteGDTEntry);
+ para_fill(pv_cpu_ops.write_idt_entry, WriteIDTEntry);
+ para_wrap(pv_cpu_ops.load_esp0, vmi_load_esp0, set_kernel_stack, UpdateKernelStack);
+ para_fill(pv_cpu_ops.set_iopl_mask, SetIOPLMask);
+ para_fill(pv_cpu_ops.io_delay, IODelay);
+ para_wrap(pv_misc_ops.set_lazy_mode, vmi_set_lazy_mode, set_lazy_mode, SetLazyMode);

/* user and kernel flush are just handled with different flags to FlushTLB */
- para_wrap(flush_tlb_user, vmi_flush_tlb_user, _flush_tlb, FlushTLB);
- para_wrap(flush_tlb_kernel, vmi_flush_tlb_kernel, _flush_tlb, FlushTLB);
- para_fill(flush_tlb_single, InvalPage);
+ para_wrap(pv_mmu_ops.flush_tlb_user, vmi_flush_tlb_user, _flush_tlb, FlushTLB);
+ para_wrap(pv_mmu_ops.flush_tlb_kernel, vmi_flush_tlb_kernel, _flush_tlb, FlushTLB);
+ para_fill(pv_mmu_ops.flush_tlb_single, InvalPage);

/*
* Until a standard flag format can be agreed on, we need to
@@ -819,41 +819,41 @@ static inline int __init activate_vmi(vo
#endif

if (vmi_ops.set_pte) {
- paravirt_ops.set_pte = vmi_set_pte;
- paravirt_ops.set_pte_at = vmi_set_pte_at;
- paravirt_ops.set_pmd = vmi_set_pmd;
+ pv_mmu_ops.set_pte = vmi_set_pte;
+ pv_mmu_ops.set_pte_at = vmi_set_pte_at;
+ pv_mmu_ops.set_pmd = vmi_set_pmd;
#ifdef CONFIG_X86_PAE
- paravirt_ops.set_pte_atomic = vmi_set_pte_atomic;
- paravirt_ops.set_pte_present = vmi_set_pte_present;
- paravirt_ops.set_pud = vmi_set_pud;
- paravirt_ops.pte_clear = vmi_pte_clear;
- paravirt_ops.pmd_clear = vmi_pmd_clear;
+ pv_mmu_ops.set_pte_atomic = vmi_set_pte_atomic;
+ pv_mmu_ops.set_pte_present = vmi_set_pte_present;
+ pv_mmu_ops.set_pud = vmi_set_pud;
+ pv_mmu_ops.pte_clear = vmi_pte_clear;
+ pv_mmu_ops.pmd_clear = vmi_pmd_clear;
#endif
}

if (vmi_ops.update_pte) {
- paravirt_ops.pte_update = vmi_update_pte;
- paravirt_ops.pte_update_defer = vmi_update_pte_defer;
+ pv_mmu_ops.pte_update = vmi_update_pte;
+ pv_mmu_ops.pte_update_defer = vmi_update_pte_defer;
}

vmi_ops.allocate_page = vmi_get_function(VMI_CALL_AllocatePage);
if (vmi_ops.allocate_page) {
- paravirt_ops.alloc_pt = vmi_allocate_pt;
- paravirt_ops.alloc_pd = vmi_allocate_pd;
- paravirt_ops.alloc_pd_clone = vmi_allocate_pd_clone;
+ pv_mmu_ops.alloc_pt = vmi_allocate_pt;
+ pv_mmu_ops.alloc_pd = vmi_allocate_pd;
+ pv_mmu_ops.alloc_pd_clone = vmi_allocate_pd_clone;
}

vmi_ops.release_page = vmi_get_function(VMI_CALL_ReleasePage);
if (vmi_ops.release_page) {
- paravirt_ops.release_pt = vmi_release_pt;
- paravirt_ops.release_pd = vmi_release_pd;
+ pv_mmu_ops.release_pt = vmi_release_pt;
+ pv_mmu_ops.release_pd = vmi_release_pd;
}

/* Set linear is needed in all cases */
vmi_ops.set_linear_mapping = vmi_get_function(VMI_CALL_SetLinearMapping);
#ifdef CONFIG_HIGHPTE
if (vmi_ops.set_linear_mapping)
- paravirt_ops.kmap_atomic_pte = vmi_kmap_atomic_pte;
+ pv_mmu_ops.kmap_atomic_pte = vmi_kmap_atomic_pte;
#endif

/*
@@ -863,17 +863,17 @@ static inline int __init activate_vmi(vo
* the backend. They are performance critical anyway, so requiring
* a patch is not a big problem.
*/
- paravirt_ops.irq_enable_sysexit = (void *)0xfeedbab0;
- paravirt_ops.iret = (void *)0xbadbab0;
+ pv_cpu_ops.irq_enable_sysexit = (void *)0xfeedbab0;
+ pv_cpu_ops.iret = (void *)0xbadbab0;

#ifdef CONFIG_SMP
- para_wrap(startup_ipi_hook, vmi_startup_ipi_hook, set_initial_ap_state, SetInitialAPState);
+ para_wrap(pv_apic_ops.startup_ipi_hook, vmi_startup_ipi_hook, set_initial_ap_state, SetInitialAPState);
#endif

#ifdef CONFIG_X86_LOCAL_APIC
- para_fill(apic_read, APICRead);
- para_fill(apic_write, APICWrite);
- para_fill(apic_write_atomic, APICWrite);
+ para_fill(pv_apic_ops.apic_read, APICRead);
+ para_fill(pv_apic_ops.apic_write, APICWrite);
+ para_fill(pv_apic_ops.apic_write_atomic, APICWrite);
#endif

/*
@@ -891,15 +891,15 @@ static inline int __init activate_vmi(vo
vmi_timer_ops.set_alarm = vmi_get_function(VMI_CALL_SetAlarm);
vmi_timer_ops.cancel_alarm =
vmi_get_function(VMI_CALL_CancelAlarm);
- paravirt_ops.time_init = vmi_time_init;
- paravirt_ops.get_wallclock = vmi_get_wallclock;
- paravirt_ops.set_wallclock = vmi_set_wallclock;
+ pv_time_ops.time_init = vmi_time_init;
+ pv_time_ops.get_wallclock = vmi_get_wallclock;
+ pv_time_ops.set_wallclock = vmi_set_wallclock;
#ifdef CONFIG_X86_LOCAL_APIC
- paravirt_ops.setup_boot_clock = vmi_time_bsp_init;
- paravirt_ops.setup_secondary_clock = vmi_time_ap_init;
-#endif
- paravirt_ops.sched_clock = vmi_sched_clock;
- paravirt_ops.get_cpu_khz = vmi_cpu_khz;
+ pv_apic_ops.setup_boot_clock = vmi_time_bsp_init;
+ pv_apic_ops.setup_secondary_clock = vmi_time_ap_init;
+#endif
+ pv_time_ops.sched_clock = vmi_sched_clock;
+ pv_time_ops.get_cpu_khz = vmi_cpu_khz;

/* We have true wallclock functions; disable CMOS clock sync */
no_sync_cmos_clock = 1;
@@ -908,7 +908,7 @@ static inline int __init activate_vmi(vo
disable_vmi_timer = 1;
}

- para_fill(safe_halt, Halt);
+ para_fill(pv_irq_ops.safe_halt, Halt);

/*
* Alternative instruction rewriting doesn't happen soon enough
===================================================================
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -139,7 +139,7 @@ static void __init xen_banner(void)
static void __init xen_banner(void)
{
printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
- paravirt_ops.name);
+ pv_info.name);
printk(KERN_INFO "Hypervisor signature: %s\n", xen_start_info->magic);
}

@@ -769,7 +769,7 @@ static __init void xen_pagetable_setup_s
pgd_t *xen_pgd = (pgd_t *)xen_start_info->pt_base;

/* special set_pte for pagetable initialization */
- paravirt_ops.set_pte = xen_set_pte_init;
+ pv_mmu_ops.set_pte = xen_set_pte_init;

init_mm.pgd = base;
/*
@@ -816,8 +816,8 @@ static __init void xen_pagetable_setup_d
{
/* This will work as long as patching hasn't happened yet
(which it hasn't) */
- paravirt_ops.alloc_pt = xen_alloc_pt;
- paravirt_ops.set_pte = xen_set_pte;
+ pv_mmu_ops.alloc_pt = xen_alloc_pt;
+ pv_mmu_ops.set_pte = xen_set_pte;

if (!xen_feature(XENFEAT_auto_translated_physmap)) {
/*
@@ -864,12 +864,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");

- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_ops.irq_enable = xen_irq_enable_direct;
+ pv_mmu_ops.read_cr2 = xen_read_cr2_direct;
+ pv_cpu_ops.iret = xen_iret_direct;
}
}

@@ -881,8 +881,8 @@ static unsigned xen_patch(u8 type, u16 c

start = end = reloc = NULL;

-#define SITE(x) \
- case PARAVIRT_PATCH(x): \
+#define SITE(op, x) \
+ case PARAVIRT_PATCH(op.x): \
if (have_vcpu_info_placement) { \
start = (char *)xen_##x##_direct; \
end = xen_##x##_direct_end; \
@@ -891,10 +891,10 @@ static unsigned xen_patch(u8 type, u16 c
goto patch_site

switch (type) {
- SITE(irq_enable);
- SITE(irq_disable);
- SITE(save_fl);
- SITE(restore_fl);
+ SITE(pv_irq_ops, irq_enable);
+ SITE(pv_irq_ops, irq_disable);
+ SITE(pv_irq_ops, save_fl);
+ SITE(pv_irq_ops, restore_fl);
#undef SITE

patch_site:
@@ -926,26 +926,32 @@ static unsigned xen_patch(u8 type, u16 c
return ret;
}

-static const struct paravirt_ops xen_paravirt_ops __initdata = {
+static const struct pv_info xen_info __initdata = {
.paravirt_enabled = 1,
.shared_kernel_pmd = 0,

.name = "Xen",
+};
+
+static const struct pv_init_ops xen_init_ops __initdata = {
+ .patch = xen_patch,
+
.banner = xen_banner,
-
- .patch = xen_patch,
-
.memory_setup = xen_memory_setup,
.arch_setup = xen_arch_setup,
- .init_IRQ = xen_init_IRQ,
.post_allocator_init = xen_mark_init_mm_pinned,
-
+};
+
+static const struct pv_time_ops xen_time_ops __initdata = {
.time_init = xen_time_init,
+
.set_wallclock = xen_set_wallclock,
.get_wallclock = xen_get_wallclock,
.get_cpu_khz = xen_cpu_khz,
.sched_clock = xen_sched_clock,
-
+};
+
+static const struct pv_cpu_ops xen_cpu_ops __initdata = {
.cpuid = xen_cpuid,

.set_debugreg = xen_set_debugreg,
@@ -955,51 +961,51 @@ static const struct paravirt_ops xen_par

.read_cr0 = native_read_cr0,
.write_cr0 = native_write_cr0,
-
- .read_cr2 = xen_read_cr2,
- .write_cr2 = xen_write_cr2,
-
- .read_cr3 = xen_read_cr3,
- .write_cr3 = xen_write_cr3,

.read_cr4 = native_read_cr4,
.read_cr4_safe = native_read_cr4_safe,
.write_cr4 = xen_write_cr4,

+ .wbinvd = native_wbinvd,
+
+ .read_msr = native_read_msr_safe,
+ .write_msr = native_write_msr_safe,
+ .read_tsc = native_read_tsc,
+ .read_pmc = native_read_pmc,
+
+ .iret = (void *)&hypercall_page[__HYPERVISOR_iret],
+ .irq_enable_sysexit = NULL, /* never called */
+
+ .load_tr_desc = paravirt_nop,
+ .set_ldt = xen_set_ldt,
+ .load_gdt = xen_load_gdt,
+ .load_idt = xen_load_idt,
+ .load_tls = xen_load_tls,
+
+ .store_gdt = native_store_gdt,
+ .store_idt = native_store_idt,
+ .store_tr = xen_store_tr,
+
+ .write_ldt_entry = xen_write_ldt_entry,
+ .write_gdt_entry = xen_write_gdt_entry,
+ .write_idt_entry = xen_write_idt_entry,
+ .load_esp0 = xen_load_esp0,
+
+ .set_iopl_mask = xen_set_iopl_mask,
+ .io_delay = xen_io_delay,
+};
+
+static const struct pv_irq_ops xen_irq_ops __initdata = {
+ .init_IRQ = xen_init_IRQ,
.save_fl = xen_save_fl,
.restore_fl = xen_restore_fl,
.irq_disable = xen_irq_disable,
.irq_enable = xen_irq_enable,
.safe_halt = xen_safe_halt,
.halt = xen_halt,
- .wbinvd = native_wbinvd,
-
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
-
- .iret = (void *)&hypercall_page[__HYPERVISOR_iret],
- .irq_enable_sysexit = NULL, /* never called */
-
- .load_tr_desc = paravirt_nop,
- .set_ldt = xen_set_ldt,
- .load_gdt = xen_load_gdt,
- .load_idt = xen_load_idt,
- .load_tls = xen_load_tls,
-
- .store_gdt = native_store_gdt,
- .store_idt = native_store_idt,
- .store_tr = xen_store_tr,
-
- .write_ldt_entry = xen_write_ldt_entry,
- .write_gdt_entry = xen_write_gdt_entry,
- .write_idt_entry = xen_write_idt_entry,
- .load_esp0 = xen_load_esp0,
-
- .set_iopl_mask = xen_set_iopl_mask,
- .io_delay = xen_io_delay,
-
+};
+
+static const struct pv_apic_ops xen_apic_ops __initdata = {
#ifdef CONFIG_X86_LOCAL_APIC
.apic_write = xen_apic_write,
.apic_write_atomic = xen_apic_write,
@@ -1008,6 +1014,17 @@ static const struct paravirt_ops xen_par
.setup_secondary_clock = paravirt_nop,
.startup_ipi_hook = paravirt_nop,
#endif
+};
+
+static const struct pv_mmu_ops xen_mmu_ops __initdata = {
+ .pagetable_setup_start = xen_pagetable_setup_start,
+ .pagetable_setup_done = xen_pagetable_setup_done,
+
+ .read_cr2 = xen_read_cr2,
+ .write_cr2 = xen_write_cr2,
+
+ .read_cr3 = xen_read_cr3,
+ .write_cr3 = xen_write_cr3,

.flush_tlb_user = xen_flush_tlb,
.flush_tlb_kernel = xen_flush_tlb,
@@ -1016,9 +1033,6 @@ static const struct paravirt_ops xen_par

.pte_update = paravirt_nop,
.pte_update_defer = paravirt_nop,
-
- .pagetable_setup_start = xen_pagetable_setup_start,
- .pagetable_setup_done = xen_pagetable_setup_done,

.alloc_pt = xen_alloc_pt_init,
.release_pt = xen_release_pt,
@@ -1054,7 +1068,9 @@ static const struct paravirt_ops xen_par
.activate_mm = xen_activate_mm,
.dup_mmap = xen_dup_mmap,
.exit_mmap = xen_exit_mmap,
-
+};
+
+static const struct pv_misc_ops xen_misc_ops __initdata = {
.set_lazy_mode = xen_set_lazy_mode,
};

@@ -1133,7 +1149,15 @@ asmlinkage void __init xen_start_kernel(
BUG_ON(memcmp(xen_start_info->magic, "xen-3.0", 7) != 0);

/* Install Xen paravirt ops */
- paravirt_ops = xen_paravirt_ops;
+ pv_info = xen_info;
+ pv_init_ops = xen_init_ops;
+ pv_time_ops = xen_time_ops;
+ pv_cpu_ops = xen_cpu_ops;
+ pv_irq_ops = xen_irq_ops;
+ pv_apic_ops = xen_apic_ops;
+ pv_mmu_ops = xen_mmu_ops;
+ pv_misc_ops = xen_misc_ops;
+
machine_ops = xen_machine_ops;

#ifdef CONFIG_SMP
@@ -1167,9 +1191,9 @@ asmlinkage void __init xen_start_kernel(
xen_setup_vcpu_info_placement();
#endif

- paravirt_ops.kernel_rpl = 1;
+ pv_info.kernel_rpl = 1;
if (xen_feature(XENFEAT_supervisor_mode_kernel))
- paravirt_ops.kernel_rpl = 0;
+ pv_info.kernel_rpl = 0;

/* set the limit of our address space */
xen_reserve_top();
===================================================================
--- a/drivers/char/hvc_lguest.c
+++ b/drivers/char/hvc_lguest.c
@@ -115,7 +115,7 @@ static struct hv_ops lguest_cons = {
* (0), and the struct hv_ops containing the put_chars() function. */
static int __init cons_init(void)
{
- if (strcmp(paravirt_ops.name, "lguest") != 0)
+ if (strcmp(pv_info.name, "lguest") != 0)
return 0;

return hvc_instantiate(0, 0, &lguest_cons);
===================================================================
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -248,8 +248,8 @@ static void unmap_switcher(void)
}

/*H:130 Our Guest is usually so well behaved; it never tries to do things it
- * isn't allowed to. Unfortunately, "struct paravirt_ops" isn't quite
- * complete, because it doesn't contain replacements for the Intel I/O
+ * isn't allowed to. Unfortunately, Linux's paravirtual infrastructure isn't
+ * quite complete, because it doesn't contain replacements for the Intel I/O
* instructions. As a result, the Guest sometimes fumbles across one during
* the boot process as it probes for various things which are usually attached
* to a PC.
@@ -694,7 +694,7 @@ static int __init init(void)

/* Lguest can't run under Xen, VMI or itself. It does Tricky Stuff. */
if (paravirt_enabled()) {
- printk("lguest is afraid of %s\n", paravirt_ops.name);
+ printk("lguest is afraid of %s\n", pv_info.name);
return -EPERM;
}

===================================================================
--- a/drivers/lguest/lguest.c
+++ b/drivers/lguest/lguest.c
@@ -23,7 +23,7 @@
*
* So how does the kernel know it's a Guest? The Guest starts at a special
* entry point marked with a magic string, which sets up a few things then
- * calls here. We replace the native functions in "struct paravirt_ops"
+ * calls here. We replace the native functions various "paravirt" structures
* with our Guest versions, then boot like normal. :*/

/*
@@ -331,7 +331,7 @@ static void lguest_load_tls(struct threa
}

/*G:038 That's enough excitement for now, back to ploughing through each of
- * the paravirt_ops (we're about 1/3 of the way through).
+ * the different pv_ops structures (we're about 1/3 of the way through).
*
* This is the Local Descriptor Table, another weird Intel thingy. Linux only
* uses this for some strange applications like Wine. We don't do anything
@@ -558,7 +558,7 @@ static void lguest_set_pte(pte_t *ptep,
lazy_hcall(LHCALL_FLUSH_TLB, 1, 0, 0);
}

-/* Unfortunately for Lguest, the paravirt_ops for page tables were based on
+/* Unfortunately for Lguest, the pv_mmu_ops for page tables were based on
* native page table operations. On native hardware you can set a new page
* table entry whenever you want, but if you want to remove one you have to do
* a TLB flush (a TLB is a little cache of page table entries kept by the CPU).
@@ -782,7 +782,7 @@ static void lguest_time_init(void)
clocksource_register(&lguest_clock);

/* Now we've set up our clock, we can use it as the scheduler clock */
- paravirt_ops.sched_clock = lguest_sched_clock;
+ pv_time_ops.sched_clock = lguest_sched_clock;

/* We can't set cpumask in the initializer: damn C limitations! Set it
* here and register our timer device. */
@@ -902,7 +902,7 @@ static __init char *lguest_memory_setup(
/*G:050
* Patching (Powerfully Placating Performance Pedants)
*
- * We have already seen that "struct paravirt_ops" lets us replace simple
+ * We have already seen that pv_ops structures let us replace simple
* native instructions with calls to the appropriate back end all throughout
* the kernel. This allows the same kernel to run as a Guest and as a native
* kernel, but it's slow because of all the indirect branches.
@@ -927,10 +927,10 @@ static const struct lguest_insns
{
const char *start, *end;
} lguest_insns[] = {
- [PARAVIRT_PATCH(irq_disable)] = { lgstart_cli, lgend_cli },
- [PARAVIRT_PATCH(irq_enable)] = { lgstart_sti, lgend_sti },
- [PARAVIRT_PATCH(restore_fl)] = { lgstart_popf, lgend_popf },
- [PARAVIRT_PATCH(save_fl)] = { lgstart_pushf, lgend_pushf },
+ [PARAVIRT_PATCH(pv_irq_ops.irq_disable)] = { lgstart_cli, lgend_cli },
+ [PARAVIRT_PATCH(pv_irq_ops.irq_enable)] = { lgstart_sti, lgend_sti },
+ [PARAVIRT_PATCH(pv_irq_ops.restore_fl)] = { lgstart_popf, lgend_popf },
+ [PARAVIRT_PATCH(pv_irq_ops.save_fl)] = { lgstart_pushf, lgend_pushf },
};

/* Now our patch routine is fairly simple (based on the native one in
@@ -957,9 +957,9 @@ static unsigned lguest_patch(u8 type, u1
return insn_len;
}

-/*G:030 Once we get to lguest_init(), we know we're a Guest. The paravirt_ops
- * structure in the kernel provides a single point for (almost) every routine
- * we have to override to avoid privileged instructions. */
+/*G:030 Once we get to lguest_init(), we know we're a Guest. The pv_ops
+ * structures in the kernel provide points for (almost) every routine we have
+ * to override to avoid privileged instructions. */
__init void lguest_init(void *boot)
{
/* Copy boot parameters first: the Launcher put the physical location
@@ -974,54 +974,68 @@ __init void lguest_init(void *boot)

/* We're under lguest, paravirt is enabled, and we're running at
* privilege level 1, not 0 as normal. */
- paravirt_ops.name = "lguest";
- paravirt_ops.paravirt_enabled = 1;
- paravirt_ops.kernel_rpl = 1;
+ pv_info.name = "lguest";
+ pv_info.paravirt_enabled = 1;
+ pv_info.kernel_rpl = 1;

/* We set up all the lguest overrides for sensitive operations. These
* are detailed with the operations themselves. */
- paravirt_ops.save_fl = save_fl;
- paravirt_ops.restore_fl = restore_fl;
- paravirt_ops.irq_disable = irq_disable;
- paravirt_ops.irq_enable = irq_enable;
- paravirt_ops.load_gdt = lguest_load_gdt;
- paravirt_ops.memory_setup = lguest_memory_setup;
- paravirt_ops.cpuid = lguest_cpuid;
- paravirt_ops.write_cr3 = lguest_write_cr3;
- paravirt_ops.flush_tlb_user = lguest_flush_tlb_user;
- paravirt_ops.flush_tlb_single = lguest_flush_tlb_single;
- paravirt_ops.flush_tlb_kernel = lguest_flush_tlb_kernel;
- paravirt_ops.set_pte = lguest_set_pte;
- paravirt_ops.set_pte_at = lguest_set_pte_at;
- paravirt_ops.set_pmd = lguest_set_pmd;
+
+ /* interrupt-related operations */
+ pv_irq_ops.init_IRQ = lguest_init_IRQ;
+ pv_irq_ops.save_fl = save_fl;
+ pv_irq_ops.restore_fl = restore_fl;
+ pv_irq_ops.irq_disable = irq_disable;
+ pv_irq_ops.irq_enable = irq_enable;
+ pv_irq_ops.safe_halt = lguest_safe_halt;
+
+ /* init-time operations */
+ pv_init_ops.memory_setup = lguest_memory_setup;
+ pv_init_ops.patch = lguest_patch;
+
+ /* Intercepts of various cpu instructions */
+ pv_cpu_ops.load_gdt = lguest_load_gdt;
+ pv_cpu_ops.cpuid = lguest_cpuid;
+ pv_cpu_ops.load_idt = lguest_load_idt;
+ pv_cpu_ops.iret = lguest_iret;
+ pv_cpu_ops.load_esp0 = lguest_load_esp0;
+ pv_cpu_ops.load_tr_desc = lguest_load_tr_desc;
+ pv_cpu_ops.set_ldt = lguest_set_ldt;
+ pv_cpu_ops.load_tls = lguest_load_tls;
+ pv_cpu_ops.set_debugreg = lguest_set_debugreg;
+ pv_cpu_ops.clts = lguest_clts;
+ pv_cpu_ops.read_cr0 = lguest_read_cr0;
+ pv_cpu_ops.write_cr0 = lguest_write_cr0;
+ pv_cpu_ops.read_cr4 = lguest_read_cr4;
+ pv_cpu_ops.write_cr4 = lguest_write_cr4;
+ pv_cpu_ops.write_gdt_entry = lguest_write_gdt_entry;
+ pv_cpu_ops.write_idt_entry = lguest_write_idt_entry;
+ pv_cpu_ops.wbinvd = lguest_wbinvd;
+
+ /* pagetable management */
+ pv_mmu_ops.write_cr3 = lguest_write_cr3;
+ pv_mmu_ops.flush_tlb_user = lguest_flush_tlb_user;
+ pv_mmu_ops.flush_tlb_single = lguest_flush_tlb_single;
+ pv_mmu_ops.flush_tlb_kernel = lguest_flush_tlb_kernel;
+ pv_mmu_ops.set_pte = lguest_set_pte;
+ pv_mmu_ops.set_pte_at = lguest_set_pte_at;
+ pv_mmu_ops.set_pmd = lguest_set_pmd;
+ pv_mmu_ops.read_cr2 = lguest_read_cr2;
+ pv_mmu_ops.read_cr3 = lguest_read_cr3;
+
#ifdef CONFIG_X86_LOCAL_APIC
- paravirt_ops.apic_write = lguest_apic_write;
- paravirt_ops.apic_write_atomic = lguest_apic_write;
- paravirt_ops.apic_read = lguest_apic_read;
+ /* apic read/write intercepts */
+ pv_apic_ops.apic_write = lguest_apic_write;
+ pv_apic_ops.apic_write_atomic = lguest_apic_write;
+ pv_apic_ops.apic_read = lguest_apic_read;
#endif
- paravirt_ops.load_idt = lguest_load_idt;
- paravirt_ops.iret = lguest_iret;
- paravirt_ops.load_esp0 = lguest_load_esp0;
- paravirt_ops.load_tr_desc = lguest_load_tr_desc;
- paravirt_ops.set_ldt = lguest_set_ldt;
- paravirt_ops.load_tls = lguest_load_tls;
- paravirt_ops.set_debugreg = lguest_set_debugreg;
- paravirt_ops.clts = lguest_clts;
- paravirt_ops.read_cr0 = lguest_read_cr0;
- paravirt_ops.write_cr0 = lguest_write_cr0;
- paravirt_ops.init_IRQ = lguest_init_IRQ;
- paravirt_ops.read_cr2 = lguest_read_cr2;
- paravirt_ops.read_cr3 = lguest_read_cr3;
- paravirt_ops.read_cr4 = lguest_read_cr4;
- paravirt_ops.write_cr4 = lguest_write_cr4;
- paravirt_ops.write_gdt_entry = lguest_write_gdt_entry;
- paravirt_ops.write_idt_entry = lguest_write_idt_entry;
- paravirt_ops.patch = lguest_patch;
- paravirt_ops.safe_halt = lguest_safe_halt;
- paravirt_ops.get_wallclock = lguest_get_wallclock;
- paravirt_ops.time_init = lguest_time_init;
- paravirt_ops.set_lazy_mode = lguest_lazy_mode;
- paravirt_ops.wbinvd = lguest_wbinvd;
+
+ /* time operations */
+ pv_time_ops.get_wallclock = lguest_get_wallclock;
+ pv_time_ops.time_init = lguest_time_init;
+
+ pv_misc_ops.set_lazy_mode = lguest_lazy_mode;
+
/* Now is a good time to look at the implementations of these functions
* before returning to the rest of lguest_init(). */

===================================================================
--- a/drivers/lguest/lguest_bus.c
+++ b/drivers/lguest/lguest_bus.c
@@ -201,7 +201,7 @@ static void scan_devices(void)
* "struct lguest_device_desc" array. */
static int __init lguest_bus_init(void)
{
- if (strcmp(paravirt_ops.name, "lguest") != 0)
+ if (strcmp(pv_info.name, "lguest") != 0)
return 0;

/* Devices are in a single page above top of "normal" mem */
===================================================================
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -33,19 +33,23 @@ enum paravirt_lazy_mode {
PARAVIRT_LAZY_FLUSH = 3,
};

-struct paravirt_ops
-{
+
+/* general info */
+struct pv_info {
unsigned int kernel_rpl;
int shared_kernel_pmd;
- int paravirt_enabled;
+ int paravirt_enabled;
const char *name;
-
+};
+
+struct pv_init_ops {
/*
- * Patch may replace one of the defined code sequences with arbitrary
- * code, subject to the same register constraints. This generally
- * means the code is not free to clobber any registers other than EAX.
- * The patch function should return the number of bytes of code
- * generated, as we nop pad the rest in generic code.
+ * Patch may replace one of the defined code sequences with
+ * arbitrary code, subject to the same register constraints.
+ * This generally means the code is not free to clobber any
+ * registers other than EAX. The patch function should return
+ * the number of bytes of code generated, as we nop pad the
+ * rest in generic code.
*/
unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
unsigned long addr, unsigned len);
@@ -55,29 +59,28 @@ struct paravirt_ops
char *(*memory_setup)(void);
void (*post_allocator_init)(void);

- void (*init_IRQ)(void);
- void (*time_init)(void);
-
- /*
- * Called before/after init_mm pagetable setup. setup_start
- * may reset %cr3, and may pre-install parts of the pagetable;
- * pagetable setup is expected to preserve any existing
- * mapping.
- */
- void (*pagetable_setup_start)(pgd_t *pgd_base);
- void (*pagetable_setup_done)(pgd_t *pgd_base);
-
/* Print a banner to identify the environment */
void (*banner)(void);
+};
+
+
+struct pv_misc_ops {
+ /* Set deferred update mode, used for batching operations. */
+ void (*set_lazy_mode)(enum paravirt_lazy_mode mode);
+};
+
+struct pv_time_ops {
+ void (*time_init)(void);

/* Set and set time of day */
unsigned long (*get_wallclock)(void);
int (*set_wallclock)(unsigned long);

- /* cpuid emulation, mostly so that caps bits can be disabled */
- void (*cpuid)(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx);
-
+ unsigned long long (*sched_clock)(void);
+ unsigned long (*get_cpu_khz)(void);
+};
+
+struct pv_cpu_ops {
/* hooks for various privileged instructions */
unsigned long (*get_debugreg)(int regno);
void (*set_debugreg)(int regno, unsigned long value);
@@ -87,40 +90,9 @@ struct paravirt_ops
unsigned long (*read_cr0)(void);
void (*write_cr0)(unsigned long);

- unsigned long (*read_cr2)(void);
- void (*write_cr2)(unsigned long);
-
- unsigned long (*read_cr3)(void);
- void (*write_cr3)(unsigned long);
-
unsigned long (*read_cr4_safe)(void);
unsigned long (*read_cr4)(void);
void (*write_cr4)(unsigned long);
-
- /*
- * Get/set interrupt state. save_fl and restore_fl are only
- * expected to use X86_EFLAGS_IF; all other bits
- * returned from save_fl are undefined, and may be ignored by
- * restore_fl.
- */
- unsigned long (*save_fl)(void);
- void (*restore_fl)(unsigned long);
- void (*irq_disable)(void);
- void (*irq_enable)(void);
- void (*safe_halt)(void);
- void (*halt)(void);
-
- void (*wbinvd)(void);
-
- /* MSR, PMC and TSR operations.
- err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */
- u64 (*read_msr)(unsigned int msr, int *err);
- int (*write_msr)(unsigned int msr, u64 val);
-
- u64 (*read_tsc)(void);
- u64 (*read_pmc)(void);
- unsigned long long (*sched_clock)(void);
- unsigned long (*get_cpu_khz)(void);

/* Segment descriptor handling */
void (*load_tr_desc)(void);
@@ -140,18 +112,45 @@ struct paravirt_ops
void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);

void (*set_iopl_mask)(unsigned mask);
+
+ void (*wbinvd)(void);
void (*io_delay)(void);

+ /* cpuid emulation, mostly so that caps bits can be disabled */
+ void (*cpuid)(unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx);
+
+ /* MSR, PMC and TSR operations.
+ err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */
+ u64 (*read_msr)(unsigned int msr, int *err);
+ int (*write_msr)(unsigned int msr, u64 val);
+
+ u64 (*read_tsc)(void);
+ u64 (*read_pmc)(void);
+
+ /* These two are jmp to, not actually called. */
+ void (*irq_enable_sysexit)(void);
+ void (*iret)(void);
+};
+
+struct pv_irq_ops {
+ void (*init_IRQ)(void);
+
/*
- * Hooks for intercepting the creation/use/destruction of an
- * mm_struct.
+ * Get/set interrupt state. save_fl and restore_fl are only
+ * expected to use X86_EFLAGS_IF; all other bits
+ * returned from save_fl are undefined, and may be ignored by
+ * restore_fl.
*/
- void (*activate_mm)(struct mm_struct *prev,
- struct mm_struct *next);
- void (*dup_mmap)(struct mm_struct *oldmm,
- struct mm_struct *mm);
- void (*exit_mmap)(struct mm_struct *mm);
-
+ unsigned long (*save_fl)(void);
+ void (*restore_fl)(unsigned long);
+ void (*irq_disable)(void);
+ void (*irq_enable)(void);
+ void (*safe_halt)(void);
+ void (*halt)(void);
+};
+
+struct pv_apic_ops {
#ifdef CONFIG_X86_LOCAL_APIC
/*
* Direct APIC operations, principally for VMI. Ideally
@@ -167,6 +166,34 @@ struct paravirt_ops
unsigned long start_eip,
unsigned long start_esp);
#endif
+};
+
+struct pv_mmu_ops {
+ /*
+ * Called before/after init_mm pagetable setup. setup_start
+ * may reset %cr3, and may pre-install parts of the pagetable;
+ * pagetable setup is expected to preserve any existing
+ * mapping.
+ */
+ void (*pagetable_setup_start)(pgd_t *pgd_base);
+ void (*pagetable_setup_done)(pgd_t *pgd_base);
+
+ unsigned long (*read_cr2)(void);
+ void (*write_cr2)(unsigned long);
+
+ unsigned long (*read_cr3)(void);
+ void (*write_cr3)(unsigned long);
+
+ /*
+ * Hooks for intercepting the creation/use/destruction of an
+ * mm_struct.
+ */
+ void (*activate_mm)(struct mm_struct *prev,
+ struct mm_struct *next);
+ void (*dup_mmap)(struct mm_struct *oldmm,
+ struct mm_struct *mm);
+ void (*exit_mmap)(struct mm_struct *mm);
+

/* TLB operations */
void (*flush_tlb_user)(void);
@@ -191,15 +218,12 @@ struct paravirt_ops
void (*pte_update_defer)(struct mm_struct *mm,
unsigned long addr, pte_t *ptep);

-#ifdef CONFIG_HIGHPTE
- void *(*kmap_atomic_pte)(struct page *page, enum km_type type);
-#endif
-
#ifdef CONFIG_X86_PAE
void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
- void (*set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
+ void (*set_pte_present)(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte);
void (*set_pud)(pud_t *pudp, pud_t pudval);
- void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+ void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
void (*pmd_clear)(pmd_t *pmdp);

unsigned long long (*pte_val)(pte_t);
@@ -217,21 +241,40 @@ struct paravirt_ops
pgd_t (*make_pgd)(unsigned long pgd);
#endif

- /* Set deferred update mode, used for batching operations. */
- void (*set_lazy_mode)(enum paravirt_lazy_mode mode);
-
- /* These two are jmp to, not actually called. */
- void (*irq_enable_sysexit)(void);
- void (*iret)(void);
+#ifdef CONFIG_HIGHPTE
+ void *(*kmap_atomic_pte)(struct page *page, enum km_type type);
+#endif
};

-extern struct paravirt_ops paravirt_ops;
+/* This contains all the paravirt structures: we get a convenient
+ * number for each function using the offset which we use to indicate
+ * what to patch. */
+struct paravirt_patch_template
+{
+ struct pv_init_ops pv_init_ops;
+ struct pv_misc_ops pv_misc_ops;
+ struct pv_time_ops pv_time_ops;
+ struct pv_cpu_ops pv_cpu_ops;
+ struct pv_irq_ops pv_irq_ops;
+ struct pv_apic_ops pv_apic_ops;
+ struct pv_mmu_ops pv_mmu_ops;
+};
+
+extern struct pv_info pv_info;
+extern struct pv_init_ops pv_init_ops;
+extern struct pv_misc_ops pv_misc_ops;
+extern struct pv_time_ops pv_time_ops;
+extern struct pv_cpu_ops pv_cpu_ops;
+extern struct pv_irq_ops pv_irq_ops;
+extern struct pv_apic_ops pv_apic_ops;
+extern struct pv_mmu_ops pv_mmu_ops;

#define PARAVIRT_PATCH(x) \
- (offsetof(struct paravirt_ops, x) / sizeof(void *))
-
-#define paravirt_type(type) \
- [paravirt_typenum] "i" (PARAVIRT_PATCH(type))
+ (offsetof(struct paravirt_patch_template, x) / sizeof(void *))
+
+#define paravirt_type(op) \
+ [paravirt_typenum] "i" (PARAVIRT_PATCH(op)), \
+ [paravirt_opptr] "m" (op)
#define paravirt_clobber(clobber) \
[paravirt_clobber] "i" (clobber)

@@ -258,7 +301,7 @@ unsigned paravirt_patch_call(void *insnb
const void *target, u16 tgt_clobbers,
unsigned long addr, u16 site_clobbers,
unsigned len);
-unsigned paravirt_patch_jmp(const void *target, void *insnbuf,
+unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
unsigned long addr, unsigned len);
unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
unsigned long addr, unsigned len);
@@ -271,14 +314,14 @@ int paravirt_disable_iospace(void);
/*
* This generates an indirect call based on the operation type number.
* The type number, computed in PARAVIRT_PATCH, is derived from the
- * offset into the paravirt_ops structure, and can therefore be freely
- * converted back into a structure offset.
+ * offset into the paravirt_patch_template structure, and can therefore be
+ * freely converted back into a structure offset.
*/
-#define PARAVIRT_CALL "call *(paravirt_ops+%c[paravirt_typenum]*4);"
+#define PARAVIRT_CALL "call *%[paravirt_opptr];"

/*
- * These macros are intended to wrap calls into a paravirt_ops
- * operation, so that they can be later identified and patched at
+ * These macros are intended to wrap calls through one of the paravirt
+ * ops structs, so that they can be later identified and patched at
* runtime.
*
* Normally, a call to a pv_op function is a simple indirect call:
@@ -301,7 +344,7 @@ int paravirt_disable_iospace(void);
* The call instruction itself is marked by placing its start address
* and size into the .parainstructions section, so that
* apply_paravirt() in arch/i386/kernel/alternative.c can do the
- * appropriate patching under the control of the backend paravirt_ops
+ * appropriate patching under the control of the backend pv_init_ops
* implementation.
*
* Unfortunately there's no way to get gcc to generate the args setup
@@ -409,36 +452,36 @@ int paravirt_disable_iospace(void);

static inline int paravirt_enabled(void)
{
- return paravirt_ops.paravirt_enabled;
+ return pv_info.paravirt_enabled;
}

static inline void load_esp0(struct tss_struct *tss,
struct thread_struct *thread)
{
- PVOP_VCALL2(load_esp0, tss, thread);
-}
-
-#define ARCH_SETUP paravirt_ops.arch_setup();
+ PVOP_VCALL2(pv_cpu_ops.load_esp0, tss, thread);
+}
+
+#define ARCH_SETUP pv_init_ops.arch_setup();
static inline unsigned long get_wallclock(void)
{
- return PVOP_CALL0(unsigned long, get_wallclock);
+ return PVOP_CALL0(unsigned long, pv_time_ops.get_wallclock);
}

static inline int set_wallclock(unsigned long nowtime)
{
- return PVOP_CALL1(int, set_wallclock, nowtime);
+ return PVOP_CALL1(int, pv_time_ops.set_wallclock, nowtime);
}

static inline void (*choose_time_init(void))(void)
{
- return paravirt_ops.time_init;
+ return pv_time_ops.time_init;
}

/* The paravirtualized CPUID instruction. */
static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx)
{
- PVOP_VCALL4(cpuid, eax, ebx, ecx, edx);
+ PVOP_VCALL4(pv_cpu_ops.cpuid, eax, ebx, ecx, edx);
}

/*
@@ -446,87 +489,87 @@ static inline void __cpuid(unsigned int
*/
static inline unsigned long paravirt_get_debugreg(int reg)
{
- return PVOP_CALL1(unsigned long, get_debugreg, reg);
+ return PVOP_CALL1(unsigned long, pv_cpu_ops.get_debugreg, reg);
}
#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
static inline void set_debugreg(unsigned long val, int reg)
{
- PVOP_VCALL2(set_debugreg, reg, val);
+ PVOP_VCALL2(pv_cpu_ops.set_debugreg, reg, val);
}

static inline void clts(void)
{
- PVOP_VCALL0(clts);
+ PVOP_VCALL0(pv_cpu_ops.clts);
}

static inline unsigned long read_cr0(void)
{
- return PVOP_CALL0(unsigned long, read_cr0);
+ return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr0);
}

static inline void write_cr0(unsigned long x)
{
- PVOP_VCALL1(write_cr0, x);
+ PVOP_VCALL1(pv_cpu_ops.write_cr0, x);
}

static inline unsigned long read_cr2(void)
{
- return PVOP_CALL0(unsigned long, read_cr2);
+ return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr2);
}

static inline void write_cr2(unsigned long x)
{
- PVOP_VCALL1(write_cr2, x);
+ PVOP_VCALL1(pv_mmu_ops.write_cr2, x);
}

static inline unsigned long read_cr3(void)
{
- return PVOP_CALL0(unsigned long, read_cr3);
+ return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr3);
}

static inline void write_cr3(unsigned long x)
{
- PVOP_VCALL1(write_cr3, x);
+ PVOP_VCALL1(pv_mmu_ops.write_cr3, x);
}

static inline unsigned long read_cr4(void)
{
- return PVOP_CALL0(unsigned long, read_cr4);
+ return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4);
}
static inline unsigned long read_cr4_safe(void)
{
- return PVOP_CALL0(unsigned long, read_cr4_safe);
+ return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4_safe);
}

static inline void write_cr4(unsigned long x)
{
- PVOP_VCALL1(write_cr4, x);
+ PVOP_VCALL1(pv_cpu_ops.write_cr4, x);
}

static inline void raw_safe_halt(void)
{
- PVOP_VCALL0(safe_halt);
+ PVOP_VCALL0(pv_irq_ops.safe_halt);
}

static inline void halt(void)
{
- PVOP_VCALL0(safe_halt);
+ PVOP_VCALL0(pv_irq_ops.safe_halt);
}

static inline void wbinvd(void)
{
- PVOP_VCALL0(wbinvd);
-}
-
-#define get_kernel_rpl() (paravirt_ops.kernel_rpl)
+ PVOP_VCALL0(pv_cpu_ops.wbinvd);
+}
+
+#define get_kernel_rpl() (pv_info.kernel_rpl)

static inline u64 paravirt_read_msr(unsigned msr, int *err)
{
- return PVOP_CALL2(u64, read_msr, msr, err);
+ return PVOP_CALL2(u64, pv_cpu_ops.read_msr, msr, err);
}
static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high)
{
- return PVOP_CALL3(int, write_msr, msr, low, high);
+ return PVOP_CALL3(int, pv_cpu_ops.write_msr, msr, low, high);
}

/* These should all do BUG_ON(_err), but our headers are too tangled. */
@@ -560,7 +603,7 @@ static inline int paravirt_write_msr(uns

static inline u64 paravirt_read_tsc(void)
{
- return PVOP_CALL0(u64, read_tsc);
+ return PVOP_CALL0(u64, pv_cpu_ops.read_tsc);
}

#define rdtscl(low) do { \
@@ -572,15 +615,15 @@ static inline u64 paravirt_read_tsc(void

static inline unsigned long long paravirt_sched_clock(void)
{
- return PVOP_CALL0(unsigned long long, sched_clock);
-}
-#define calculate_cpu_khz() (paravirt_ops.get_cpu_khz())
+ return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
+}
+#define calculate_cpu_khz() (pv_time_ops.get_cpu_khz())

#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)

static inline unsigned long long paravirt_read_pmc(int counter)
{
- return PVOP_CALL1(u64, read_pmc, counter);
+ return PVOP_CALL1(u64, pv_cpu_ops.read_pmc, counter);
}

#define rdpmc(counter,low,high) do { \
@@ -591,61 +634,61 @@ static inline unsigned long long paravir

static inline void load_TR_desc(void)
{
- PVOP_VCALL0(load_tr_desc);
+ PVOP_VCALL0(pv_cpu_ops.load_tr_desc);
}
static inline void load_gdt(const struct Xgt_desc_struct *dtr)
{
- PVOP_VCALL1(load_gdt, dtr);
+ PVOP_VCALL1(pv_cpu_ops.load_gdt, dtr);
}
static inline void load_idt(const struct Xgt_desc_struct *dtr)
{
- PVOP_VCALL1(load_idt, dtr);
+ PVOP_VCALL1(pv_cpu_ops.load_idt, dtr);
}
static inline void set_ldt(const void *addr, unsigned entries)
{
- PVOP_VCALL2(set_ldt, addr, entries);
+ PVOP_VCALL2(pv_cpu_ops.set_ldt, addr, entries);
}
static inline void store_gdt(struct Xgt_desc_struct *dtr)
{
- PVOP_VCALL1(store_gdt, dtr);
+ PVOP_VCALL1(pv_cpu_ops.store_gdt, dtr);
}
static inline void store_idt(struct Xgt_desc_struct *dtr)
{
- PVOP_VCALL1(store_idt, dtr);
+ PVOP_VCALL1(pv_cpu_ops.store_idt, dtr);
}
static inline unsigned long paravirt_store_tr(void)
{
- return PVOP_CALL0(unsigned long, store_tr);
+ return PVOP_CALL0(unsigned long, pv_cpu_ops.store_tr);
}
#define store_tr(tr) ((tr) = paravirt_store_tr())
static inline void load_TLS(struct thread_struct *t, unsigned cpu)
{
- PVOP_VCALL2(load_tls, t, cpu);
+ PVOP_VCALL2(pv_cpu_ops.load_tls, t, cpu);
}
static inline void write_ldt_entry(void *dt, int entry, u32 low, u32 high)
{
- PVOP_VCALL4(write_ldt_entry, dt, entry, low, high);
+ PVOP_VCALL4(pv_cpu_ops.write_ldt_entry, dt, entry, low, high);
}
static inline void write_gdt_entry(void *dt, int entry, u32 low, u32 high)
{
- PVOP_VCALL4(write_gdt_entry, dt, entry, low, high);
+ PVOP_VCALL4(pv_cpu_ops.write_gdt_entry, dt, entry, low, high);
}
static inline void write_idt_entry(void *dt, int entry, u32 low, u32 high)
{
- PVOP_VCALL4(write_idt_entry, dt, entry, low, high);
+ PVOP_VCALL4(pv_cpu_ops.write_idt_entry, dt, entry, low, high);
}
static inline void set_iopl_mask(unsigned mask)
{
- PVOP_VCALL1(set_iopl_mask, mask);
+ PVOP_VCALL1(pv_cpu_ops.set_iopl_mask, mask);
}

/* The paravirtualized I/O functions */
static inline void slow_down_io(void) {
- paravirt_ops.io_delay();
+ pv_cpu_ops.io_delay();
#ifdef REALLY_SLOW_IO
- paravirt_ops.io_delay();
- paravirt_ops.io_delay();
- paravirt_ops.io_delay();
+ pv_cpu_ops.io_delay();
+ pv_cpu_ops.io_delay();
+ pv_cpu_ops.io_delay();
#endif
}

@@ -655,121 +698,120 @@ static inline void slow_down_io(void) {
*/
static inline void apic_write(unsigned long reg, unsigned long v)
{
- PVOP_VCALL2(apic_write, reg, v);
+ PVOP_VCALL2(pv_apic_ops.apic_write, reg, v);
}

static inline void apic_write_atomic(unsigned long reg, unsigned long v)
{
- PVOP_VCALL2(apic_write_atomic, reg, v);
+ PVOP_VCALL2(pv_apic_ops.apic_write_atomic, reg, v);
}

static inline unsigned long apic_read(unsigned long reg)
{
- return PVOP_CALL1(unsigned long, apic_read, reg);
+ return PVOP_CALL1(unsigned long, pv_apic_ops.apic_read, reg);
}

static inline void setup_boot_clock(void)
{
- PVOP_VCALL0(setup_boot_clock);
+ PVOP_VCALL0(pv_apic_ops.setup_boot_clock);
}

static inline void setup_secondary_clock(void)
{
- PVOP_VCALL0(setup_secondary_clock);
+ PVOP_VCALL0(pv_apic_ops.setup_secondary_clock);
}
#endif

static inline void paravirt_post_allocator_init(void)
{
- if (paravirt_ops.post_allocator_init)
- (*paravirt_ops.post_allocator_init)();
+ if (pv_init_ops.post_allocator_init)
+ (*pv_init_ops.post_allocator_init)();
}

static inline void paravirt_pagetable_setup_start(pgd_t *base)
{
- if (paravirt_ops.pagetable_setup_start)
- (*paravirt_ops.pagetable_setup_start)(base);
+ (*pv_mmu_ops.pagetable_setup_start)(base);
}

static inline void paravirt_pagetable_setup_done(pgd_t *base)
{
- if (paravirt_ops.pagetable_setup_done)
- (*paravirt_ops.pagetable_setup_done)(base);
+ (*pv_mmu_ops.pagetable_setup_done)(base);
}

#ifdef CONFIG_SMP
static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
unsigned long start_esp)
{
- PVOP_VCALL3(startup_ipi_hook, phys_apicid, start_eip, start_esp);
+ PVOP_VCALL3(pv_apic_ops.startup_ipi_hook,
+ phys_apicid, start_eip, start_esp);
}
#endif

static inline void paravirt_activate_mm(struct mm_struct *prev,
struct mm_struct *next)
{
- PVOP_VCALL2(activate_mm, prev, next);
+ PVOP_VCALL2(pv_mmu_ops.activate_mm, prev, next);
}

static inline void arch_dup_mmap(struct mm_struct *oldmm,
struct mm_struct *mm)
{
- PVOP_VCALL2(dup_mmap, oldmm, mm);
+ PVOP_VCALL2(pv_mmu_ops.dup_mmap, oldmm, mm);
}

static inline void arch_exit_mmap(struct mm_struct *mm)
{
- PVOP_VCALL1(exit_mmap, mm);
+ PVOP_VCALL1(pv_mmu_ops.exit_mmap, mm);
}

static inline void __flush_tlb(void)
{
- PVOP_VCALL0(flush_tlb_user);
+ PVOP_VCALL0(pv_mmu_ops.flush_tlb_user);
}
static inline void __flush_tlb_global(void)
{
- PVOP_VCALL0(flush_tlb_kernel);
+ PVOP_VCALL0(pv_mmu_ops.flush_tlb_kernel);
}
static inline void __flush_tlb_single(unsigned long addr)
{
- PVOP_VCALL1(flush_tlb_single, addr);
+ PVOP_VCALL1(pv_mmu_ops.flush_tlb_single, addr);
}

static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
unsigned long va)
{
- PVOP_VCALL3(flush_tlb_others, &cpumask, mm, va);
+ PVOP_VCALL3(pv_mmu_ops.flush_tlb_others, &cpumask, mm, va);
}

static inline void paravirt_alloc_pt(struct mm_struct *mm, unsigned pfn)
{
- PVOP_VCALL2(alloc_pt, mm, pfn);
+ PVOP_VCALL2(pv_mmu_ops.alloc_pt, mm, pfn);
}
static inline void paravirt_release_pt(unsigned pfn)
{
- PVOP_VCALL1(release_pt, pfn);
+ PVOP_VCALL1(pv_mmu_ops.release_pt, pfn);
}

static inline void paravirt_alloc_pd(unsigned pfn)
{
- PVOP_VCALL1(alloc_pd, pfn);
+ PVOP_VCALL1(pv_mmu_ops.alloc_pd, pfn);
}

static inline void paravirt_alloc_pd_clone(unsigned pfn, unsigned clonepfn,
unsigned start, unsigned count)
{
- PVOP_VCALL4(alloc_pd_clone, pfn, clonepfn, start, count);
+ PVOP_VCALL4(pv_mmu_ops.alloc_pd_clone, pfn, clonepfn, start, count);
}
static inline void paravirt_release_pd(unsigned pfn)
{
- PVOP_VCALL1(release_pd, pfn);
+ PVOP_VCALL1(pv_mmu_ops.release_pd, pfn);
}

#ifdef CONFIG_HIGHPTE
static inline void *kmap_atomic_pte(struct page *page, enum km_type type)
{
unsigned long ret;
- ret = PVOP_CALL2(unsigned long, kmap_atomic_pte, page, type);
+ ret = PVOP_CALL2(unsigned long, pv_mmu_ops.kmap_atomic_pte, page, type);
return (void *)ret;
}
#endif
@@ -777,162 +819,171 @@ static inline void pte_update(struct mm_
static inline void pte_update(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
- PVOP_VCALL3(pte_update, mm, addr, ptep);
+ PVOP_VCALL3(pv_mmu_ops.pte_update, mm, addr, ptep);
}

static inline void pte_update_defer(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
- PVOP_VCALL3(pte_update_defer, mm, addr, ptep);
+ PVOP_VCALL3(pv_mmu_ops.pte_update_defer, mm, addr, ptep);
}

#ifdef CONFIG_X86_PAE
static inline pte_t __pte(unsigned long long val)
{
- unsigned long long ret = PVOP_CALL2(unsigned long long, make_pte,
+ unsigned long long ret = PVOP_CALL2(unsigned long long,
+ pv_mmu_ops.make_pte,
val, val >> 32);
return (pte_t) { ret, ret >> 32 };
}

static inline pmd_t __pmd(unsigned long long val)
{
- return (pmd_t) { PVOP_CALL2(unsigned long long, make_pmd, val, val >> 32) };
+ return (pmd_t) { PVOP_CALL2(unsigned long long, pv_mmu_ops.make_pmd,
+ val, val >> 32) };
}

static inline pgd_t __pgd(unsigned long long val)
{
- return (pgd_t) { PVOP_CALL2(unsigned long long, make_pgd, val, val >> 32) };
+ return (pgd_t) { PVOP_CALL2(unsigned long long, pv_mmu_ops.make_pgd,
+ val, val >> 32) };
}

static inline unsigned long long pte_val(pte_t x)
{
- return PVOP_CALL2(unsigned long long, pte_val, x.pte_low, x.pte_high);
+ return PVOP_CALL2(unsigned long long, pv_mmu_ops.pte_val,
+ x.pte_low, x.pte_high);
}

static inline unsigned long long pmd_val(pmd_t x)
{
- return PVOP_CALL2(unsigned long long, pmd_val, x.pmd, x.pmd >> 32);
+ return PVOP_CALL2(unsigned long long, pv_mmu_ops.pmd_val,
+ x.pmd, x.pmd >> 32);
}

static inline unsigned long long pgd_val(pgd_t x)
{
- return PVOP_CALL2(unsigned long long, pgd_val, x.pgd, x.pgd >> 32);
+ return PVOP_CALL2(unsigned long long, pv_mmu_ops.pgd_val,
+ x.pgd, x.pgd >> 32);
}

static inline void set_pte(pte_t *ptep, pte_t pteval)
{
- PVOP_VCALL3(set_pte, ptep, pteval.pte_low, pteval.pte_high);
+ PVOP_VCALL3(pv_mmu_ops.set_pte, ptep, pteval.pte_low, pteval.pte_high);
}

static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval)
{
/* 5 arg words */
- paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
+ pv_mmu_ops.set_pte_at(mm, addr, ptep, pteval);
}

static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
{
- PVOP_VCALL3(set_pte_atomic, ptep, pteval.pte_low, pteval.pte_high);
+ PVOP_VCALL3(pv_mmu_ops.set_pte_atomic, ptep,
+ pteval.pte_low, pteval.pte_high);
}

static inline void set_pte_present(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
/* 5 arg words */
- paravirt_ops.set_pte_present(mm, addr, ptep, pte);
+ pv_mmu_ops.set_pte_present(mm, addr, ptep, pte);
}

static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
{
- PVOP_VCALL3(set_pmd, pmdp, pmdval.pmd, pmdval.pmd >> 32);
+ PVOP_VCALL3(pv_mmu_ops.set_pmd, pmdp,
+ pmdval.pmd, pmdval.pmd >> 32);
}

static inline void set_pud(pud_t *pudp, pud_t pudval)
{
- PVOP_VCALL3(set_pud, pudp, pudval.pgd.pgd, pudval.pgd.pgd >> 32);
+ PVOP_VCALL3(pv_mmu_ops.set_pud, pudp,
+ pudval.pgd.pgd, pudval.pgd.pgd >> 32);
}

static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
- PVOP_VCALL3(pte_clear, mm, addr, ptep);
+ PVOP_VCALL3(pv_mmu_ops.pte_clear, mm, addr, ptep);
}

static inline void pmd_clear(pmd_t *pmdp)
{
- PVOP_VCALL1(pmd_clear, pmdp);
+ PVOP_VCALL1(pv_mmu_ops.pmd_clear, pmdp);
}

#else /* !CONFIG_X86_PAE */

static inline pte_t __pte(unsigned long val)
{
- return (pte_t) { PVOP_CALL1(unsigned long, make_pte, val) };
+ return (pte_t) { PVOP_CALL1(unsigned long, pv_mmu_ops.make_pte, val) };
}

static inline pgd_t __pgd(unsigned long val)
{
- return (pgd_t) { PVOP_CALL1(unsigned long, make_pgd, val) };
+ return (pgd_t) { PVOP_CALL1(unsigned long, pv_mmu_ops.make_pgd, val) };
}

static inline unsigned long pte_val(pte_t x)
{
- return PVOP_CALL1(unsigned long, pte_val, x.pte_low);
+ return PVOP_CALL1(unsigned long, pv_mmu_ops.pte_val, x.pte_low);
}

static inline unsigned long pgd_val(pgd_t x)
{
- return PVOP_CALL1(unsigned long, pgd_val, x.pgd);
+ return PVOP_CALL1(unsigned long, pv_mmu_ops.pgd_val, x.pgd);
}

static inline void set_pte(pte_t *ptep, pte_t pteval)
{
- PVOP_VCALL2(set_pte, ptep, pteval.pte_low);
+ PVOP_VCALL2(pv_mmu_ops.set_pte, ptep, pteval.pte_low);
}

static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval)
{
- PVOP_VCALL4(set_pte_at, mm, addr, ptep, pteval.pte_low);
+ PVOP_VCALL4(pv_mmu_ops.set_pte_at, mm, addr, ptep, pteval.pte_low);
}

static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
{
- PVOP_VCALL2(set_pmd, pmdp, pmdval.pud.pgd.pgd);
+ PVOP_VCALL2(pv_mmu_ops.set_pmd, pmdp, pmdval.pud.pgd.pgd);
}
#endif /* CONFIG_X86_PAE */

#define __HAVE_ARCH_ENTER_LAZY_CPU_MODE
static inline void arch_enter_lazy_cpu_mode(void)
{
- PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_CPU);
+ PVOP_VCALL1(pv_misc_ops.set_lazy_mode, PARAVIRT_LAZY_CPU);
}

static inline void arch_leave_lazy_cpu_mode(void)
{
- PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
+ PVOP_VCALL1(pv_misc_ops.set_lazy_mode, PARAVIRT_LAZY_NONE);
}

static inline void arch_flush_lazy_cpu_mode(void)
{
- PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
+ PVOP_VCALL1(pv_misc_ops.set_lazy_mode, PARAVIRT_LAZY_FLUSH);
}


#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
static inline void arch_enter_lazy_mmu_mode(void)
{
- PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_MMU);
+ PVOP_VCALL1(pv_misc_ops.set_lazy_mode, PARAVIRT_LAZY_MMU);
}

static inline void arch_leave_lazy_mmu_mode(void)
{
- PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
+ PVOP_VCALL1(pv_misc_ops.set_lazy_mode, PARAVIRT_LAZY_NONE);
}

static inline void arch_flush_lazy_mmu_mode(void)
{
- PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
+ PVOP_VCALL1(pv_misc_ops.set_lazy_mode, PARAVIRT_LAZY_FLUSH);
}

void _paravirt_nop(void);
@@ -957,7 +1008,7 @@ static inline unsigned long __raw_local_
PARAVIRT_CALL
"popl %%edx; popl %%ecx")
: "=a"(f)
- : paravirt_type(save_fl),
+ : paravirt_type(pv_irq_ops.save_fl),
paravirt_clobber(CLBR_EAX)
: "memory", "cc");
return f;
@@ -970,7 +1021,7 @@ static inline void raw_local_irq_restore
"popl %%edx; popl %%ecx")
: "=a"(f)
: "0"(f),
- paravirt_type(restore_fl),
+ paravirt_type(pv_irq_ops.restore_fl),
paravirt_clobber(CLBR_EAX)
: "memory", "cc");
}
@@ -981,7 +1032,7 @@ static inline void raw_local_irq_disable
PARAVIRT_CALL
"popl %%edx; popl %%ecx")
:
- : paravirt_type(irq_disable),
+ : paravirt_type(pv_irq_ops.irq_disable),
paravirt_clobber(CLBR_EAX)
: "memory", "eax", "cc");
}
@@ -992,7 +1043,7 @@ static inline void raw_local_irq_enable(
PARAVIRT_CALL
"popl %%edx; popl %%ecx")
:
- : paravirt_type(irq_enable),
+ : paravirt_type(pv_irq_ops.irq_enable),
paravirt_clobber(CLBR_EAX)
: "memory", "eax", "cc");
}
@@ -1008,21 +1059,23 @@ static inline unsigned long __raw_local_

#define CLI_STRING \
_paravirt_alt("pushl %%ecx; pushl %%edx;" \
- "call *paravirt_ops+%c[paravirt_cli_type]*4;" \
+ "call *%[paravirt_cli_opptr];" \
"popl %%edx; popl %%ecx", \
"%c[paravirt_cli_type]", "%c[paravirt_clobber]")

#define STI_STRING \
_paravirt_alt("pushl %%ecx; pushl %%edx;" \
- "call *paravirt_ops+%c[paravirt_sti_type]*4;" \
+ "call *%[paravirt_sti_opptr];" \
"popl %%edx; popl %%ecx", \
"%c[paravirt_sti_type]", "%c[paravirt_clobber]")

#define CLI_STI_CLOBBERS , "%eax"
#define CLI_STI_INPUT_ARGS \
, \
- [paravirt_cli_type] "i" (PARAVIRT_PATCH(irq_disable)), \
- [paravirt_sti_type] "i" (PARAVIRT_PATCH(irq_enable)), \
+ [paravirt_cli_type] "i" (PARAVIRT_PATCH(pv_irq_ops.irq_disable)), \
+ [paravirt_cli_opptr] "m" (pv_irq_ops.irq_disable), \
+ [paravirt_sti_type] "i" (PARAVIRT_PATCH(pv_irq_ops.irq_enable)), \
+ [paravirt_sti_opptr] "m" (pv_irq_ops.irq_enable), \
paravirt_clobber(CLBR_EAX)

/* Make sure as little as possible of this mess escapes. */
@@ -1042,7 +1095,7 @@ static inline unsigned long __raw_local_

#else /* __ASSEMBLY__ */

-#define PARA_PATCH(off) ((off) / 4)
+#define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4)

#define PARA_SITE(ptype, clobbers, ops) \
771:; \
@@ -1055,29 +1108,29 @@ 772:; \
.short clobbers; \
.popsection

-#define INTERRUPT_RETURN \
- PARA_SITE(PARA_PATCH(PARAVIRT_iret), CLBR_NONE, \
- jmp *%cs:paravirt_ops+PARAVIRT_iret)
+#define INTERRUPT_RETURN \
+ PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), CLBR_NONE, \
+ jmp *%cs:pv_cpu_ops+PV_CPU_iret)

#define DISABLE_INTERRUPTS(clobbers) \
- PARA_SITE(PARA_PATCH(PARAVIRT_irq_disable), clobbers, \
+ PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_disable), clobbers, \
pushl %eax; pushl %ecx; pushl %edx; \
- call *%cs:paravirt_ops+PARAVIRT_irq_disable; \
+ call *%cs:pv_irq_ops+PV_IRQ_irq_disable; \
popl %edx; popl %ecx; popl %eax) \

#define ENABLE_INTERRUPTS(clobbers) \
- PARA_SITE(PARA_PATCH(PARAVIRT_irq_enable), clobbers, \
+ PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_enable), clobbers, \
pushl %eax; pushl %ecx; pushl %edx; \
- call *%cs:paravirt_ops+PARAVIRT_irq_enable; \
+ call *%cs:pv_irq_ops+PV_IRQ_irq_enable; \
popl %edx; popl %ecx; popl %eax)

-#define ENABLE_INTERRUPTS_SYSEXIT \
- PARA_SITE(PARA_PATCH(PARAVIRT_irq_enable_sysexit), CLBR_NONE, \
- jmp *%cs:paravirt_ops+PARAVIRT_irq_enable_sysexit)
+#define ENABLE_INTERRUPTS_SYSEXIT \
+ PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), CLBR_NONE,\
+ jmp *%cs:pv_cpu_ops+PV_CPU_irq_enable_sysexit)

#define GET_CR0_INTO_EAX \
push %ecx; push %edx; \
- call *paravirt_ops+PARAVIRT_read_cr0; \
+ call *pv_cpu_ops+PV_CPU_read_cr0; \
pop %edx; pop %ecx

#endif /* __ASSEMBLY__ */
===================================================================
--- a/include/asm-x86/pgtable-3level-defs.h
+++ b/include/asm-x86/pgtable-3level-defs.h
@@ -2,7 +2,7 @@
#define _I386_PGTABLE_3LEVEL_DEFS_H

#ifdef CONFIG_PARAVIRT
-#define SHARED_KERNEL_PMD (paravirt_ops.shared_kernel_pmd)
+#define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd)
#else
#define SHARED_KERNEL_PMD 1
#endif
--

-
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