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paravirt: refactor struct paravirt_ops into smaller pv_*_ops

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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>
This commit is contained in:
Jeremy Fitzhardinge 2007-10-16 11:51:29 -07:00 committed by Jeremy Fitzhardinge
parent ab9c232286
commit 93b1eab3d2
12 changed files with 590 additions and 465 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/alternative.c
View File

@ -368,8 +368,8 @@ void apply_paravirt(struct paravirt_patch_site *start,
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);

14
arch/x86/kernel/asm-offsets_32.c
View File

@ -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

2
arch/x86/kernel/entry_32.S
View File

@ -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

180
arch/x86/kernel/paravirt_32.c
View File

@ -42,32 +42,33 @@ void _paravirt_nop(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 ":")
#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(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(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");
DEF_NATIVE(ud2a, "ud2a");
/* 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)
@ -76,37 +77,29 @@ static unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
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:
ret = paravirt_patch_default(type, clobbers, ibuf, addr, len);
break;
@ -150,7 +143,7 @@ unsigned paravirt_patch_call(void *insnbuf,
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 *target, void *insnbuf,
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 *insnbuf, unsigned len,
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(void);
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,
.init_IRQ = native_init_IRQ,
.sched_clock = native_sched_clock,
.get_cpu_khz = native_calculate_cpu_khz,
};
.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,
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_cr4 = native_read_cr4,
.read_cr4_safe = native_read_cr4_safe,
.write_cr4 = native_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,
.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,
@ -338,11 +358,21 @@ struct paravirt_ops paravirt_ops = {
.setup_secondary_clock = setup_secondary_APIC_clock,
.startup_ipi_hook = paravirt_nop,
#endif
.set_lazy_mode = paravirt_nop,
};
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,
.flush_tlb_single = native_flush_tlb_single,
@ -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);

158
arch/x86/kernel/vmi_32.c
View File

@ -134,21 +134,21 @@ static unsigned vmi_patch(u8 type, u16 clobbers, void *insns,
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(void)
}
savesegment(cs, kernel_cs);
paravirt_ops.paravirt_enabled = 1;
paravirt_ops.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK;
pv_info.paravirt_enabled = 1;
pv_info.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK;
pv_info.name = "vmi";
paravirt_ops.patch = vmi_patch;
paravirt_ops.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(void)
*/
/* CPUID is special, so very special it gets wrapped like a present */
para_wrap(cpuid, vmi_cpuid, cpuid, CPUID);
para_wrap(pv_cpu_ops.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(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(wbinvd, WBINVD);
para_fill(read_tsc, RDTSC);
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(void)
/* 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_wrap(pv_cpu_ops.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_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(void)
#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(void)
* 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(void)
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;
pv_apic_ops.setup_boot_clock = vmi_time_bsp_init;
pv_apic_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_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(void)
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

98
arch/x86/xen/enlighten.c
View File

@ -124,7 +124,7 @@ static void __init xen_vcpu_setup(int cpu)
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);
}
@ -738,7 +738,7 @@ static __init void xen_pagetable_setup_start(pgd_t *base)
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;
/*
@ -785,8 +785,8 @@ static __init void xen_pagetable_setup_done(pgd_t *base)
{
/* 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)) {
/*
@ -833,12 +833,12 @@ void __init xen_setup_vcpu_info_placement(void)
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;
}
}
@ -850,8 +850,8 @@ static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf,
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; \
@ -860,10 +860,10 @@ static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf,
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:
@ -895,26 +895,32 @@ static unsigned xen_patch(u8 type, u16 clobbers, void *insnbuf,
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",
.banner = xen_banner,
};
static const struct pv_init_ops xen_init_ops __initdata = {
.patch = xen_patch,
.banner = xen_banner,
.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,
@ -925,22 +931,10 @@ static const struct paravirt_ops xen_paravirt_ops __initdata = {
.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,
.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,
@ -968,7 +962,19 @@ static const struct paravirt_ops xen_paravirt_ops __initdata = {
.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,
};
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,
@ -977,6 +983,17 @@ static const struct paravirt_ops xen_paravirt_ops __initdata = {
.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,
@ -986,9 +1003,6 @@ static const struct paravirt_ops xen_paravirt_ops __initdata = {
.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,
.alloc_pd = paravirt_nop,
@ -1023,7 +1037,9 @@ static const struct paravirt_ops xen_paravirt_ops __initdata = {
.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,
};
@ -1091,7 +1107,15 @@ asmlinkage void __init xen_start_kernel(void)
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
@ -1124,9 +1148,9 @@ asmlinkage void __init xen_start_kernel(void)
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 */
reserve_top_address(-HYPERVISOR_VIRT_START + 2 * PAGE_SIZE);

2
drivers/char/hvc_lguest.c
View File

@ -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);

6
drivers/lguest/core.c
View File

@ -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;
}

124
drivers/lguest/lguest.c
View File

@ -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 thread_struct *t, unsigned int cpu)
}
/*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, pte_t pteval)
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(void)
/*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, u16 clobber, void *ibuf,
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(). */

2
drivers/lguest/lguest_bus.c
View File

@ -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 */

463
include/asm-x86/paravirt.h
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File diff suppressed because it is too large Load Diff

2
include/asm-x86/pgtable-3level-defs.h
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@ -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