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Rusty Russelld3561b72006-12-07 02:14:07 +01001/* Paravirtualization interfaces
2 Copyright (C) 2006 Rusty Russell IBM Corporation
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Glauber de Oliveira Costab1df07b2008-01-30 13:32:04 +010017
18 2007 - x86_64 support added by Glauber de Oliveira Costa, Red Hat Inc
Rusty Russelld3561b72006-12-07 02:14:07 +010019*/
Glauber de Oliveira Costab1df07b2008-01-30 13:32:04 +010020
Rusty Russelld3561b72006-12-07 02:14:07 +010021#include <linux/errno.h>
22#include <linux/module.h>
23#include <linux/efi.h>
24#include <linux/bcd.h>
Jeremy Fitzhardingece6234b2007-05-02 19:27:15 +020025#include <linux/highmem.h>
Masami Hiramatsu376e2422014-04-17 17:17:05 +090026#include <linux/kprobes.h>
Rusty Russelld3561b72006-12-07 02:14:07 +010027
28#include <asm/bug.h>
29#include <asm/paravirt.h>
Paul Gortmaker50af5ea2012-01-20 18:35:53 -050030#include <asm/debugreg.h>
Rusty Russelld3561b72006-12-07 02:14:07 +010031#include <asm/desc.h>
32#include <asm/setup.h>
Eduardo Habkosta312b372008-07-08 15:06:23 -070033#include <asm/pgtable.h>
Rusty Russelld3561b72006-12-07 02:14:07 +010034#include <asm/time.h>
Jeremy Fitzhardingeeba00452008-06-25 00:19:12 -040035#include <asm/pgalloc.h>
Rusty Russelld3561b72006-12-07 02:14:07 +010036#include <asm/irq.h>
37#include <asm/delay.h>
Rusty Russell13623d72006-12-07 02:14:08 +010038#include <asm/fixmap.h>
39#include <asm/apic.h>
Rusty Russellda181a82006-12-07 02:14:08 +010040#include <asm/tlbflush.h>
Zachary Amsden6cb9a832007-03-05 00:30:35 -080041#include <asm/timer.h>
David Howellsf05e7982012-03-28 18:11:12 +010042#include <asm/special_insns.h>
Rusty Russelld3561b72006-12-07 02:14:07 +010043
44/* nop stub */
Jeremy Fitzhardinge45876232007-05-02 19:27:13 +020045void _paravirt_nop(void)
Rusty Russelld3561b72006-12-07 02:14:07 +010046{
47}
48
Jeremy Fitzhardinge41edafd2009-01-28 14:35:02 -080049/* identity function, which can be inlined */
50u32 _paravirt_ident_32(u32 x)
51{
52 return x;
53}
54
55u64 _paravirt_ident_64(u64 x)
56{
57 return x;
58}
59
Thomas Gleixner6f30c1a2009-08-20 13:19:57 +020060void __init default_banner(void)
Rusty Russelld3561b72006-12-07 02:14:07 +010061{
62 printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -070063 pv_info.name);
Rusty Russelld3561b72006-12-07 02:14:07 +010064}
65
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -070066/* Undefined instruction for dealing with missing ops pointers. */
67static const unsigned char ud2a[] = { 0x0f, 0x0b };
Rusty Russell139ec7c2006-12-07 02:14:08 +010068
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +020069unsigned paravirt_patch_nop(void)
70{
71 return 0;
72}
73
74unsigned paravirt_patch_ignore(unsigned len)
75{
76 return len;
77}
78
Andi Kleen19d36cc2007-07-22 11:12:31 +020079struct branch {
80 unsigned char opcode;
81 u32 delta;
82} __attribute__((packed));
83
Andi Kleenab144f52007-08-10 22:31:03 +020084unsigned paravirt_patch_call(void *insnbuf,
85 const void *target, u16 tgt_clobbers,
86 unsigned long addr, u16 site_clobbers,
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +020087 unsigned len)
88{
Andi Kleenab144f52007-08-10 22:31:03 +020089 struct branch *b = insnbuf;
90 unsigned long delta = (unsigned long)target - (addr+5);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +020091
92 if (tgt_clobbers & ~site_clobbers)
93 return len; /* target would clobber too much for this site */
94 if (len < 5)
95 return len; /* call too long for patch site */
96
Andi Kleenab144f52007-08-10 22:31:03 +020097 b->opcode = 0xe8; /* call */
98 b->delta = delta;
99 BUILD_BUG_ON(sizeof(*b) != 5);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200100
101 return 5;
102}
103
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700104unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
Andi Kleenab144f52007-08-10 22:31:03 +0200105 unsigned long addr, unsigned len)
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200106{
Andi Kleenab144f52007-08-10 22:31:03 +0200107 struct branch *b = insnbuf;
108 unsigned long delta = (unsigned long)target - (addr+5);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200109
110 if (len < 5)
111 return len; /* call too long for patch site */
112
Andi Kleenab144f52007-08-10 22:31:03 +0200113 b->opcode = 0xe9; /* jmp */
114 b->delta = delta;
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200115
116 return 5;
117}
118
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700119/* Neat trick to map patch type back to the call within the
120 * corresponding structure. */
121static void *get_call_destination(u8 type)
122{
123 struct paravirt_patch_template tmpl = {
124 .pv_init_ops = pv_init_ops,
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700125 .pv_time_ops = pv_time_ops,
126 .pv_cpu_ops = pv_cpu_ops,
127 .pv_irq_ops = pv_irq_ops,
128 .pv_apic_ops = pv_apic_ops,
129 .pv_mmu_ops = pv_mmu_ops,
Jeremy Fitzhardingeb4ecc122009-05-13 17:16:55 -0700130#ifdef CONFIG_PARAVIRT_SPINLOCKS
Jeremy Fitzhardinge74d4aff2008-07-07 12:07:50 -0700131 .pv_lock_ops = pv_lock_ops,
Jeremy Fitzhardingeb4ecc122009-05-13 17:16:55 -0700132#endif
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700133 };
134 return *((void **)&tmpl + type);
135}
136
Andi Kleenab144f52007-08-10 22:31:03 +0200137unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
138 unsigned long addr, unsigned len)
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200139{
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700140 void *opfunc = get_call_destination(type);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200141 unsigned ret;
142
143 if (opfunc == NULL)
144 /* If there's no function, patch it with a ud2a (BUG) */
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700145 ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
Jeremy Fitzhardinge41edafd2009-01-28 14:35:02 -0800146 else if (opfunc == _paravirt_nop)
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200147 /* If the operation is a nop, then nop the callsite */
148 ret = paravirt_patch_nop();
Jeremy Fitzhardinge41edafd2009-01-28 14:35:02 -0800149
150 /* identity functions just return their single argument */
151 else if (opfunc == _paravirt_ident_32)
152 ret = paravirt_patch_ident_32(insnbuf, len);
153 else if (opfunc == _paravirt_ident_64)
154 ret = paravirt_patch_ident_64(insnbuf, len);
155
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700156 else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
Andy Lutomirskiaac82d32015-04-03 15:51:54 -0700157#ifdef CONFIG_X86_32
Jeremy Fitzhardinged75cd222008-06-25 00:19:26 -0400158 type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) ||
Andy Lutomirskiaac82d32015-04-03 15:51:54 -0700159#endif
Jeremy Fitzhardinge2be29982008-06-25 00:19:28 -0400160 type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret32) ||
161 type == PARAVIRT_PATCH(pv_cpu_ops.usergs_sysret64))
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200162 /* If operation requires a jmp, then jmp */
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700163 ret = paravirt_patch_jmp(insnbuf, opfunc, addr, len);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200164 else
165 /* Otherwise call the function; assume target could
166 clobber any caller-save reg */
Andi Kleenab144f52007-08-10 22:31:03 +0200167 ret = paravirt_patch_call(insnbuf, opfunc, CLBR_ANY,
168 addr, clobbers, len);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200169
170 return ret;
171}
172
Andi Kleenab144f52007-08-10 22:31:03 +0200173unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200174 const char *start, const char *end)
175{
176 unsigned insn_len = end - start;
177
178 if (insn_len > len || start == NULL)
179 insn_len = len;
180 else
Andi Kleenab144f52007-08-10 22:31:03 +0200181 memcpy(insnbuf, start, insn_len);
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200182
Rusty Russell139ec7c2006-12-07 02:14:08 +0100183 return insn_len;
184}
185
Andi Kleen1a1eecd2007-02-13 13:26:25 +0100186static void native_flush_tlb(void)
Rusty Russellda181a82006-12-07 02:14:08 +0100187{
188 __native_flush_tlb();
189}
190
191/*
192 * Global pages have to be flushed a bit differently. Not a real
193 * performance problem because this does not happen often.
194 */
Andi Kleen1a1eecd2007-02-13 13:26:25 +0100195static void native_flush_tlb_global(void)
Rusty Russellda181a82006-12-07 02:14:08 +0100196{
197 __native_flush_tlb_global();
198}
199
Jeremy Fitzhardinge63f70272007-05-02 19:27:14 +0200200static void native_flush_tlb_single(unsigned long addr)
Rusty Russellda181a82006-12-07 02:14:08 +0100201{
202 __native_flush_tlb_single(addr);
203}
204
Ingo Molnarc5905af2012-02-24 08:31:31 +0100205struct static_key paravirt_steal_enabled;
206struct static_key paravirt_steal_rq_enabled;
Glauber Costa3c404b52011-07-11 15:28:15 -0400207
208static u64 native_steal_clock(int cpu)
209{
210 return 0;
211}
212
Rusty Russelld3561b72006-12-07 02:14:07 +0100213/* These are in entry.S */
Andi Kleen1a1eecd2007-02-13 13:26:25 +0100214extern void native_iret(void);
Jeremy Fitzhardinged75cd222008-06-25 00:19:26 -0400215extern void native_irq_enable_sysexit(void);
Jeremy Fitzhardinge2be29982008-06-25 00:19:28 -0400216extern void native_usergs_sysret32(void);
217extern void native_usergs_sysret64(void);
Rusty Russelld3561b72006-12-07 02:14:07 +0100218
Jeremy Fitzhardinged5729292007-07-17 18:37:04 -0700219static struct resource reserve_ioports = {
220 .start = 0,
221 .end = IO_SPACE_LIMIT,
222 .name = "paravirt-ioport",
223 .flags = IORESOURCE_IO | IORESOURCE_BUSY,
224};
225
Jeremy Fitzhardinged5729292007-07-17 18:37:04 -0700226/*
227 * Reserve the whole legacy IO space to prevent any legacy drivers
228 * from wasting time probing for their hardware. This is a fairly
229 * brute-force approach to disabling all non-virtual drivers.
230 *
231 * Note that this must be called very early to have any effect.
232 */
233int paravirt_disable_iospace(void)
234{
Jeremy Fitzhardingef7743fe2008-03-27 17:28:40 -0700235 return request_resource(&ioport_resource, &reserve_ioports);
Jeremy Fitzhardinged5729292007-07-17 18:37:04 -0700236}
237
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700238static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
239
240static inline void enter_lazy(enum paravirt_lazy_mode mode)
241{
Alex Shic6ae41e2012-05-11 15:35:27 +0800242 BUG_ON(this_cpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700243
Alex Shic6ae41e2012-05-11 15:35:27 +0800244 this_cpu_write(paravirt_lazy_mode, mode);
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700245}
246
Jeremy Fitzhardingeb407fc52009-02-17 23:46:21 -0800247static void leave_lazy(enum paravirt_lazy_mode mode)
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700248{
Alex Shic6ae41e2012-05-11 15:35:27 +0800249 BUG_ON(this_cpu_read(paravirt_lazy_mode) != mode);
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700250
Alex Shic6ae41e2012-05-11 15:35:27 +0800251 this_cpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE);
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700252}
253
254void paravirt_enter_lazy_mmu(void)
255{
256 enter_lazy(PARAVIRT_LAZY_MMU);
257}
258
259void paravirt_leave_lazy_mmu(void)
260{
Jeremy Fitzhardingeb407fc52009-02-17 23:46:21 -0800261 leave_lazy(PARAVIRT_LAZY_MMU);
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700262}
263
Boris Ostrovsky511ba862013-03-23 09:36:36 -0400264void paravirt_flush_lazy_mmu(void)
265{
266 preempt_disable();
267
268 if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
269 arch_leave_lazy_mmu_mode();
270 arch_enter_lazy_mmu_mode();
271 }
272
273 preempt_enable();
274}
275
Jeremy Fitzhardinge224101e2009-02-18 11:18:57 -0800276void paravirt_start_context_switch(struct task_struct *prev)
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700277{
Jeremy Fitzhardinge2829b442009-02-17 23:53:19 -0800278 BUG_ON(preemptible());
279
Alex Shic6ae41e2012-05-11 15:35:27 +0800280 if (this_cpu_read(paravirt_lazy_mode) == PARAVIRT_LAZY_MMU) {
Jeremy Fitzhardingeb407fc52009-02-17 23:46:21 -0800281 arch_leave_lazy_mmu_mode();
Jeremy Fitzhardinge224101e2009-02-18 11:18:57 -0800282 set_ti_thread_flag(task_thread_info(prev), TIF_LAZY_MMU_UPDATES);
Jeremy Fitzhardingeb407fc52009-02-17 23:46:21 -0800283 }
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700284 enter_lazy(PARAVIRT_LAZY_CPU);
285}
286
Jeremy Fitzhardinge224101e2009-02-18 11:18:57 -0800287void paravirt_end_context_switch(struct task_struct *next)
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700288{
Jeremy Fitzhardinge2829b442009-02-17 23:53:19 -0800289 BUG_ON(preemptible());
290
Jeremy Fitzhardingeb407fc52009-02-17 23:46:21 -0800291 leave_lazy(PARAVIRT_LAZY_CPU);
292
Jeremy Fitzhardinge224101e2009-02-18 11:18:57 -0800293 if (test_and_clear_ti_thread_flag(task_thread_info(next), TIF_LAZY_MMU_UPDATES))
Jeremy Fitzhardingeb407fc52009-02-17 23:46:21 -0800294 arch_enter_lazy_mmu_mode();
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700295}
296
297enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
298{
Jeremy Fitzhardingeb8bcfe92009-02-17 23:05:19 -0800299 if (in_interrupt())
300 return PARAVIRT_LAZY_NONE;
301
Alex Shic6ae41e2012-05-11 15:35:27 +0800302 return this_cpu_read(paravirt_lazy_mode);
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700303}
304
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700305struct pv_info pv_info = {
Rusty Russelld3561b72006-12-07 02:14:07 +0100306 .name = "bare hardware",
307 .paravirt_enabled = 0,
308 .kernel_rpl = 0,
Jeremy Fitzhardinge5311ab62007-05-02 19:27:13 +0200309 .shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */
Andy Lutomirski318f5a22011-08-03 09:31:53 -0400310
311#ifdef CONFIG_X86_64
312 .extra_user_64bit_cs = __USER_CS,
313#endif
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700314};
Rusty Russelld3561b72006-12-07 02:14:07 +0100315
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700316struct pv_init_ops pv_init_ops = {
317 .patch = native_patch,
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700318};
319
320struct pv_time_ops pv_time_ops = {
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700321 .sched_clock = native_sched_clock,
Glauber Costa3c404b52011-07-11 15:28:15 -0400322 .steal_clock = native_steal_clock,
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700323};
Rusty Russelld3561b72006-12-07 02:14:07 +0100324
Andi Kleen9a55fdb2013-08-05 15:02:46 -0700325__visible struct pv_irq_ops pv_irq_ops = {
Jeremy Fitzhardingeecb93d12009-01-28 14:35:05 -0800326 .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
327 .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
328 .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
329 .irq_enable = __PV_IS_CALLEE_SAVE(native_irq_enable),
Rusty Russelld3561b72006-12-07 02:14:07 +0100330 .safe_halt = native_safe_halt,
331 .halt = native_halt,
Jeremy Fitzhardingefab58422008-06-25 00:19:31 -0400332#ifdef CONFIG_X86_64
333 .adjust_exception_frame = paravirt_nop,
334#endif
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700335};
336
Andi Kleen9a55fdb2013-08-05 15:02:46 -0700337__visible struct pv_cpu_ops pv_cpu_ops = {
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700338 .cpuid = native_cpuid,
339 .get_debugreg = native_get_debugreg,
340 .set_debugreg = native_set_debugreg,
341 .clts = native_clts,
342 .read_cr0 = native_read_cr0,
343 .write_cr0 = native_write_cr0,
344 .read_cr4 = native_read_cr4,
345 .read_cr4_safe = native_read_cr4_safe,
346 .write_cr4 = native_write_cr4,
Glauber de Oliveira Costa88b47552008-01-30 13:33:19 +0100347#ifdef CONFIG_X86_64
348 .read_cr8 = native_read_cr8,
349 .write_cr8 = native_write_cr8,
350#endif
Rusty Russelld3561b72006-12-07 02:14:07 +0100351 .wbinvd = native_wbinvd,
Rusty Russell90a0a062007-05-02 19:27:10 +0200352 .read_msr = native_read_msr_safe,
353 .write_msr = native_write_msr_safe,
Rusty Russelld3561b72006-12-07 02:14:07 +0100354 .read_tsc = native_read_tsc,
355 .read_pmc = native_read_pmc,
Glauber de Oliveira Costae5aaac42008-01-30 13:32:05 +0100356 .read_tscp = native_read_tscp,
Rusty Russelld3561b72006-12-07 02:14:07 +0100357 .load_tr_desc = native_load_tr_desc,
358 .set_ldt = native_set_ldt,
359 .load_gdt = native_load_gdt,
360 .load_idt = native_load_idt,
Rusty Russelld3561b72006-12-07 02:14:07 +0100361 .store_idt = native_store_idt,
362 .store_tr = native_store_tr,
363 .load_tls = native_load_tls,
Jeremy Fitzhardinge9f9d4892008-06-25 00:19:32 -0400364#ifdef CONFIG_X86_64
365 .load_gs_index = native_load_gs_index,
366#endif
Glauber de Oliveira Costa75b8bb32008-01-30 13:31:13 +0100367 .write_ldt_entry = native_write_ldt_entry,
Glauber de Oliveira Costa014b15b2008-01-30 13:31:13 +0100368 .write_gdt_entry = native_write_gdt_entry,
Glauber de Oliveira Costa8d947342008-01-30 13:31:12 +0100369 .write_idt_entry = native_write_idt_entry,
Jeremy Fitzhardinge38ffbe62008-07-23 14:21:18 -0700370
371 .alloc_ldt = paravirt_nop,
372 .free_ldt = paravirt_nop,
373
H. Peter Anvinfaca6222008-01-30 13:31:02 +0100374 .load_sp0 = native_load_sp0,
Rusty Russelld3561b72006-12-07 02:14:07 +0100375
Andy Lutomirskiaac82d32015-04-03 15:51:54 -0700376#if defined(CONFIG_X86_32)
Jeremy Fitzhardinged75cd222008-06-25 00:19:26 -0400377 .irq_enable_sysexit = native_irq_enable_sysexit,
Jeremy Fitzhardinge102d0a42008-06-30 11:10:53 -0700378#endif
Jeremy Fitzhardinge2be29982008-06-25 00:19:28 -0400379#ifdef CONFIG_X86_64
Jeremy Fitzhardinge102d0a42008-06-30 11:10:53 -0700380#ifdef CONFIG_IA32_EMULATION
Jeremy Fitzhardinge2be29982008-06-25 00:19:28 -0400381 .usergs_sysret32 = native_usergs_sysret32,
Jeremy Fitzhardinge102d0a42008-06-30 11:10:53 -0700382#endif
Jeremy Fitzhardinge2be29982008-06-25 00:19:28 -0400383 .usergs_sysret64 = native_usergs_sysret64,
Jeremy Fitzhardinged75cd222008-06-25 00:19:26 -0400384#endif
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700385 .iret = native_iret,
Glauber de Oliveira Costae801f862008-01-30 13:32:08 +0100386 .swapgs = native_swapgs,
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700387
Rusty Russelld3561b72006-12-07 02:14:07 +0100388 .set_iopl_mask = native_set_iopl_mask,
389 .io_delay = native_io_delay,
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700390
Jeremy Fitzhardinge224101e2009-02-18 11:18:57 -0800391 .start_context_switch = paravirt_nop,
392 .end_context_switch = paravirt_nop,
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700393};
Rusty Russelld3561b72006-12-07 02:14:07 +0100394
Masami Hiramatsu80271972014-04-17 17:17:19 +0900395/* At this point, native_get/set_debugreg has real function entries */
Masami Hiramatsu376e2422014-04-17 17:17:05 +0900396NOKPROBE_SYMBOL(native_get_debugreg);
Masami Hiramatsu80271972014-04-17 17:17:19 +0900397NOKPROBE_SYMBOL(native_set_debugreg);
398NOKPROBE_SYMBOL(native_load_idt);
Masami Hiramatsu376e2422014-04-17 17:17:05 +0900399
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700400struct pv_apic_ops pv_apic_ops = {
Rusty Russell13623d72006-12-07 02:14:08 +0100401#ifdef CONFIG_X86_LOCAL_APIC
Jeremy Fitzhardinge0260c192007-05-02 19:27:18 +0200402 .startup_ipi_hook = paravirt_nop,
Rusty Russell13623d72006-12-07 02:14:08 +0100403#endif
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700404};
Rusty Russell13623d72006-12-07 02:14:08 +0100405
Jeremy Fitzhardinge41edafd2009-01-28 14:35:02 -0800406#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
407/* 32-bit pagetable entries */
Jeremy Fitzhardingeda5de7c2009-01-28 14:35:07 -0800408#define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32)
Jeremy Fitzhardinge41edafd2009-01-28 14:35:02 -0800409#else
410/* 64-bit pagetable entries */
Jeremy Fitzhardingeda5de7c2009-01-28 14:35:07 -0800411#define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64)
Jeremy Fitzhardinge41edafd2009-01-28 14:35:02 -0800412#endif
413
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700414struct pv_mmu_ops pv_mmu_ops = {
Jeremy Fitzhardingeb239fb22007-05-02 19:27:13 +0200415
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700416 .read_cr2 = native_read_cr2,
417 .write_cr2 = native_write_cr2,
418 .read_cr3 = native_read_cr3,
419 .write_cr3 = native_write_cr3,
420
Rusty Russellda181a82006-12-07 02:14:08 +0100421 .flush_tlb_user = native_flush_tlb,
422 .flush_tlb_kernel = native_flush_tlb_global,
423 .flush_tlb_single = native_flush_tlb_single,
Jeremy Fitzhardinged4c10472007-05-02 19:27:15 +0200424 .flush_tlb_others = native_flush_tlb_others,
Rusty Russellda181a82006-12-07 02:14:08 +0100425
Jeremy Fitzhardingeeba00452008-06-25 00:19:12 -0400426 .pgd_alloc = __paravirt_pgd_alloc,
427 .pgd_free = paravirt_nop,
428
Jeremy Fitzhardinge6944a9c2008-03-17 16:37:01 -0700429 .alloc_pte = paravirt_nop,
430 .alloc_pmd = paravirt_nop,
Jeremy Fitzhardinge2761fa02008-03-17 16:37:02 -0700431 .alloc_pud = paravirt_nop,
Jeremy Fitzhardinge6944a9c2008-03-17 16:37:01 -0700432 .release_pte = paravirt_nop,
433 .release_pmd = paravirt_nop,
Jeremy Fitzhardinge2761fa02008-03-17 16:37:02 -0700434 .release_pud = paravirt_nop,
Zachary Amsdenc119ecc2007-02-13 13:26:21 +0100435
Rusty Russellda181a82006-12-07 02:14:08 +0100436 .set_pte = native_set_pte,
437 .set_pte_at = native_set_pte_at,
438 .set_pmd = native_set_pmd,
Andrea Arcangeli331127f2011-01-13 15:46:36 -0800439 .set_pmd_at = native_set_pmd_at,
Jeremy Fitzhardinge45876232007-05-02 19:27:13 +0200440 .pte_update = paravirt_nop,
441 .pte_update_defer = paravirt_nop,
Andrea Arcangeli331127f2011-01-13 15:46:36 -0800442 .pmd_update = paravirt_nop,
443 .pmd_update_defer = paravirt_nop,
Jeremy Fitzhardinge3dc494e2007-05-02 19:27:13 +0200444
Jeremy Fitzhardinge08b882c2008-06-16 04:30:01 -0700445 .ptep_modify_prot_start = __ptep_modify_prot_start,
446 .ptep_modify_prot_commit = __ptep_modify_prot_commit,
447
Kirill A. Shutemov98233362015-04-14 15:46:14 -0700448#if CONFIG_PGTABLE_LEVELS >= 3
Rusty Russellda181a82006-12-07 02:14:08 +0100449#ifdef CONFIG_X86_PAE
450 .set_pte_atomic = native_set_pte_atomic,
Rusty Russellda181a82006-12-07 02:14:08 +0100451 .pte_clear = native_pte_clear,
452 .pmd_clear = native_pmd_clear,
Eduardo Habkostf95f2f72008-01-30 13:33:20 +0100453#endif
454 .set_pud = native_set_pud,
Jeremy Fitzhardingeda5de7c2009-01-28 14:35:07 -0800455
456 .pmd_val = PTE_IDENT,
457 .make_pmd = PTE_IDENT,
Eduardo Habkostf95f2f72008-01-30 13:33:20 +0100458
Kirill A. Shutemov98233362015-04-14 15:46:14 -0700459#if CONFIG_PGTABLE_LEVELS == 4
Jeremy Fitzhardingeda5de7c2009-01-28 14:35:07 -0800460 .pud_val = PTE_IDENT,
461 .make_pud = PTE_IDENT,
462
Eduardo Habkostf95f2f72008-01-30 13:33:20 +0100463 .set_pgd = native_set_pgd,
Rusty Russellda181a82006-12-07 02:14:08 +0100464#endif
Kirill A. Shutemov98233362015-04-14 15:46:14 -0700465#endif /* CONFIG_PGTABLE_LEVELS >= 3 */
Rusty Russellda181a82006-12-07 02:14:08 +0100466
Jeremy Fitzhardingeda5de7c2009-01-28 14:35:07 -0800467 .pte_val = PTE_IDENT,
468 .pgd_val = PTE_IDENT,
Jeremy Fitzhardinge3dc494e2007-05-02 19:27:13 +0200469
Jeremy Fitzhardingeda5de7c2009-01-28 14:35:07 -0800470 .make_pte = PTE_IDENT,
471 .make_pgd = PTE_IDENT,
Jeremy Fitzhardinge3dc494e2007-05-02 19:27:13 +0200472
Jeremy Fitzhardinged6dd61c2007-05-02 19:27:14 +0200473 .dup_mmap = paravirt_nop,
474 .exit_mmap = paravirt_nop,
475 .activate_mm = paravirt_nop,
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700476
477 .lazy_mode = {
478 .enter = paravirt_nop,
479 .leave = paravirt_nop,
Boris Ostrovsky511ba862013-03-23 09:36:36 -0400480 .flush = paravirt_nop,
Jeremy Fitzhardinge8965c1c02007-10-16 11:51:29 -0700481 },
Jeremy Fitzhardingeaeaaa592008-06-17 11:42:01 -0700482
483 .set_fixmap = native_set_fixmap,
Rusty Russelld3561b72006-12-07 02:14:07 +0100484};
Ingo Molnar0dbe5a12007-01-22 20:40:36 -0800485
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700486EXPORT_SYMBOL_GPL(pv_time_ops);
Jeremy Fitzhardingef97b8952007-11-28 16:22:11 -0800487EXPORT_SYMBOL (pv_cpu_ops);
488EXPORT_SYMBOL (pv_mmu_ops);
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -0700489EXPORT_SYMBOL_GPL(pv_apic_ops);
490EXPORT_SYMBOL_GPL(pv_info);
491EXPORT_SYMBOL (pv_irq_ops);