1fd534e9bSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 2b1df07bdSGlauber de Oliveira Costa /* Paravirtualization interfaces 3b1df07bdSGlauber de Oliveira Costa Copyright (C) 2006 Rusty Russell IBM Corporation 4b1df07bdSGlauber de Oliveira Costa 5b1df07bdSGlauber de Oliveira Costa 6b1df07bdSGlauber de Oliveira Costa 2007 - x86_64 support added by Glauber de Oliveira Costa, Red Hat Inc 7b1df07bdSGlauber de Oliveira Costa */ 8b1df07bdSGlauber de Oliveira Costa 9b1df07bdSGlauber de Oliveira Costa #include <linux/errno.h> 10186f4360SPaul Gortmaker #include <linux/init.h> 11186f4360SPaul Gortmaker #include <linux/export.h> 12b1df07bdSGlauber de Oliveira Costa #include <linux/efi.h> 13b1df07bdSGlauber de Oliveira Costa #include <linux/bcd.h> 14b1df07bdSGlauber de Oliveira Costa #include <linux/highmem.h> 15376e2424SMasami Hiramatsu #include <linux/kprobes.h> 1665fddcfcSMike Rapoport #include <linux/pgtable.h> 17a0e2bf7cSJuergen Gross #include <linux/static_call.h> 18b1df07bdSGlauber de Oliveira Costa 19b1df07bdSGlauber de Oliveira Costa #include <asm/bug.h> 20b1df07bdSGlauber de Oliveira Costa #include <asm/paravirt.h> 2150af5eadSPaul Gortmaker #include <asm/debugreg.h> 22b1df07bdSGlauber de Oliveira Costa #include <asm/desc.h> 23b1df07bdSGlauber de Oliveira Costa #include <asm/setup.h> 24b1df07bdSGlauber de Oliveira Costa #include <asm/time.h> 25eba0045fSJeremy Fitzhardinge #include <asm/pgalloc.h> 26b1df07bdSGlauber de Oliveira Costa #include <asm/irq.h> 27b1df07bdSGlauber de Oliveira Costa #include <asm/delay.h> 28b1df07bdSGlauber de Oliveira Costa #include <asm/fixmap.h> 29b1df07bdSGlauber de Oliveira Costa #include <asm/apic.h> 30b1df07bdSGlauber de Oliveira Costa #include <asm/tlbflush.h> 31b1df07bdSGlauber de Oliveira Costa #include <asm/timer.h> 32f05e798aSDavid Howells #include <asm/special_insns.h> 3348a8b97cSPeter Zijlstra #include <asm/tlb.h> 3499bcd4a6SJuergen Gross #include <asm/io_bitmap.h> 35b1df07bdSGlauber de Oliveira Costa 36fc57a7c6SAndy Lutomirski /* 37fc57a7c6SAndy Lutomirski * nop stub, which must not clobber anything *including the stack* to 38fc57a7c6SAndy Lutomirski * avoid confusing the entry prologues. 39fc57a7c6SAndy Lutomirski */ 40fc57a7c6SAndy Lutomirski extern void _paravirt_nop(void); 41fc57a7c6SAndy Lutomirski asm (".pushsection .entry.text, \"ax\"\n" 42fc57a7c6SAndy Lutomirski ".global _paravirt_nop\n" 43fc57a7c6SAndy Lutomirski "_paravirt_nop:\n\t" 44fc57a7c6SAndy Lutomirski "ret\n\t" 45fc57a7c6SAndy Lutomirski ".size _paravirt_nop, . - _paravirt_nop\n\t" 46fc57a7c6SAndy Lutomirski ".type _paravirt_nop, @function\n\t" 47fc57a7c6SAndy Lutomirski ".popsection"); 48b1df07bdSGlauber de Oliveira Costa 496f30c1acSThomas Gleixner void __init default_banner(void) 50b1df07bdSGlauber de Oliveira Costa { 51b1df07bdSGlauber de Oliveira Costa printk(KERN_INFO "Booting paravirtualized kernel on %s\n", 52b1df07bdSGlauber de Oliveira Costa pv_info.name); 53b1df07bdSGlauber de Oliveira Costa } 54b1df07bdSGlauber de Oliveira Costa 55b1df07bdSGlauber de Oliveira Costa /* Undefined instruction for dealing with missing ops pointers. */ 56fafe5e74SJuergen Gross static void paravirt_BUG(void) 57fafe5e74SJuergen Gross { 58fafe5e74SJuergen Gross BUG(); 59fafe5e74SJuergen Gross } 60b1df07bdSGlauber de Oliveira Costa 61b1df07bdSGlauber de Oliveira Costa struct branch { 62b1df07bdSGlauber de Oliveira Costa unsigned char opcode; 63b1df07bdSGlauber de Oliveira Costa u32 delta; 64b1df07bdSGlauber de Oliveira Costa } __attribute__((packed)); 65b1df07bdSGlauber de Oliveira Costa 661fc654cfSIngo Molnar static unsigned paravirt_patch_call(void *insn_buff, const void *target, 67abc745f8SJuergen Gross unsigned long addr, unsigned len) 68b1df07bdSGlauber de Oliveira Costa { 6911e86dc7SIngo Molnar const int call_len = 5; 701fc654cfSIngo Molnar struct branch *b = insn_buff; 7111e86dc7SIngo Molnar unsigned long delta = (unsigned long)target - (addr+call_len); 72b1df07bdSGlauber de Oliveira Costa 7311e86dc7SIngo Molnar if (len < call_len) { 7411e86dc7SIngo Molnar pr_warn("paravirt: Failed to patch indirect CALL at %ps\n", (void *)addr); 7511e86dc7SIngo Molnar /* Kernel might not be viable if patching fails, bail out: */ 7611e86dc7SIngo Molnar BUG_ON(1); 775800dc5cSPeter Zijlstra } 78b1df07bdSGlauber de Oliveira Costa 79b1df07bdSGlauber de Oliveira Costa b->opcode = 0xe8; /* call */ 80b1df07bdSGlauber de Oliveira Costa b->delta = delta; 8111e86dc7SIngo Molnar BUILD_BUG_ON(sizeof(*b) != call_len); 82b1df07bdSGlauber de Oliveira Costa 8311e86dc7SIngo Molnar return call_len; 84b1df07bdSGlauber de Oliveira Costa } 85b1df07bdSGlauber de Oliveira Costa 869bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 877847c7beSJuergen Gross /* identity function, which can be inlined */ 887847c7beSJuergen Gross u64 notrace _paravirt_ident_64(u64 x) 897847c7beSJuergen Gross { 907847c7beSJuergen Gross return x; 917847c7beSJuergen Gross } 929bad5658SJuergen Gross #endif 93b1df07bdSGlauber de Oliveira Costa 949043442bSJuergen Gross DEFINE_STATIC_KEY_TRUE(virt_spin_lock_key); 959043442bSJuergen Gross 969043442bSJuergen Gross void __init native_pv_lock_init(void) 979043442bSJuergen Gross { 9867e87d43SBorislav Petkov if (!boot_cpu_has(X86_FEATURE_HYPERVISOR)) 999043442bSJuergen Gross static_branch_disable(&virt_spin_lock_key); 1009043442bSJuergen Gross } 1019043442bSJuergen Gross 102054ac8adSJuergen Gross unsigned int paravirt_patch(u8 type, void *insn_buff, unsigned long addr, 103054ac8adSJuergen Gross unsigned int len) 1045c83511bSJuergen Gross { 1059043442bSJuergen Gross /* 1069043442bSJuergen Gross * Neat trick to map patch type back to the call within the 1079043442bSJuergen Gross * corresponding structure. 1089043442bSJuergen Gross */ 1095c83511bSJuergen Gross void *opfunc = *((void **)&pv_ops + type); 110b1df07bdSGlauber de Oliveira Costa unsigned ret; 111b1df07bdSGlauber de Oliveira Costa 112b1df07bdSGlauber de Oliveira Costa if (opfunc == NULL) 113fafe5e74SJuergen Gross /* If there's no function, patch it with paravirt_BUG() */ 114fafe5e74SJuergen Gross ret = paravirt_patch_call(insn_buff, paravirt_BUG, addr, len); 11541edafdbSJeremy Fitzhardinge else if (opfunc == _paravirt_nop) 11679f1d836SBorislav Petkov ret = 0; 117b1df07bdSGlauber de Oliveira Costa else 118abc745f8SJuergen Gross /* Otherwise call the function. */ 1191fc654cfSIngo Molnar ret = paravirt_patch_call(insn_buff, opfunc, addr, len); 120b1df07bdSGlauber de Oliveira Costa 121b1df07bdSGlauber de Oliveira Costa return ret; 122b1df07bdSGlauber de Oliveira Costa } 123b1df07bdSGlauber de Oliveira Costa 124c5905afbSIngo Molnar struct static_key paravirt_steal_enabled; 125c5905afbSIngo Molnar struct static_key paravirt_steal_rq_enabled; 1263c404b57SGlauber Costa 1273c404b57SGlauber Costa static u64 native_steal_clock(int cpu) 1283c404b57SGlauber Costa { 1293c404b57SGlauber Costa return 0; 1303c404b57SGlauber Costa } 1313c404b57SGlauber Costa 132a0e2bf7cSJuergen Gross DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock); 133a0e2bf7cSJuergen Gross DEFINE_STATIC_CALL(pv_sched_clock, native_sched_clock); 134a0e2bf7cSJuergen Gross 135a0e2bf7cSJuergen Gross void paravirt_set_sched_clock(u64 (*func)(void)) 136a0e2bf7cSJuergen Gross { 137a0e2bf7cSJuergen Gross static_call_update(pv_sched_clock, func); 138a0e2bf7cSJuergen Gross } 139a0e2bf7cSJuergen Gross 140b1df07bdSGlauber de Oliveira Costa /* These are in entry.S */ 141b1df07bdSGlauber de Oliveira Costa extern void native_iret(void); 142b1df07bdSGlauber de Oliveira Costa 143b1df07bdSGlauber de Oliveira Costa static struct resource reserve_ioports = { 144b1df07bdSGlauber de Oliveira Costa .start = 0, 145b1df07bdSGlauber de Oliveira Costa .end = IO_SPACE_LIMIT, 146b1df07bdSGlauber de Oliveira Costa .name = "paravirt-ioport", 147b1df07bdSGlauber de Oliveira Costa .flags = IORESOURCE_IO | IORESOURCE_BUSY, 148b1df07bdSGlauber de Oliveira Costa }; 149b1df07bdSGlauber de Oliveira Costa 150b1df07bdSGlauber de Oliveira Costa /* 151b1df07bdSGlauber de Oliveira Costa * Reserve the whole legacy IO space to prevent any legacy drivers 152b1df07bdSGlauber de Oliveira Costa * from wasting time probing for their hardware. This is a fairly 153b1df07bdSGlauber de Oliveira Costa * brute-force approach to disabling all non-virtual drivers. 154b1df07bdSGlauber de Oliveira Costa * 155b1df07bdSGlauber de Oliveira Costa * Note that this must be called very early to have any effect. 156b1df07bdSGlauber de Oliveira Costa */ 157b1df07bdSGlauber de Oliveira Costa int paravirt_disable_iospace(void) 158b1df07bdSGlauber de Oliveira Costa { 159f7743fe6SJeremy Fitzhardinge return request_resource(&ioport_resource, &reserve_ioports); 160b1df07bdSGlauber de Oliveira Costa } 161b1df07bdSGlauber de Oliveira Costa 162b1df07bdSGlauber de Oliveira Costa static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; 163b1df07bdSGlauber de Oliveira Costa 164b1df07bdSGlauber de Oliveira Costa static inline void enter_lazy(enum paravirt_lazy_mode mode) 165b1df07bdSGlauber de Oliveira Costa { 166c6ae41e7SAlex Shi BUG_ON(this_cpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); 167b1df07bdSGlauber de Oliveira Costa 168c6ae41e7SAlex Shi this_cpu_write(paravirt_lazy_mode, mode); 169b1df07bdSGlauber de Oliveira Costa } 170b1df07bdSGlauber de Oliveira Costa 171b407fc57SJeremy Fitzhardinge static void leave_lazy(enum paravirt_lazy_mode mode) 172b1df07bdSGlauber de Oliveira Costa { 173c6ae41e7SAlex Shi BUG_ON(this_cpu_read(paravirt_lazy_mode) != mode); 174b1df07bdSGlauber de Oliveira Costa 175c6ae41e7SAlex Shi this_cpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE); 176b1df07bdSGlauber de Oliveira Costa } 177b1df07bdSGlauber de Oliveira Costa 178b1df07bdSGlauber de Oliveira Costa void paravirt_enter_lazy_mmu(void) 179b1df07bdSGlauber de Oliveira Costa { 180b1df07bdSGlauber de Oliveira Costa enter_lazy(PARAVIRT_LAZY_MMU); 181b1df07bdSGlauber de Oliveira Costa } 182b1df07bdSGlauber de Oliveira Costa 183b1df07bdSGlauber de Oliveira Costa void paravirt_leave_lazy_mmu(void) 184b1df07bdSGlauber de Oliveira Costa { 185b407fc57SJeremy Fitzhardinge leave_lazy(PARAVIRT_LAZY_MMU); 186b1df07bdSGlauber de Oliveira Costa } 187b1df07bdSGlauber de Oliveira Costa 188511ba86eSBoris Ostrovsky void paravirt_flush_lazy_mmu(void) 189511ba86eSBoris Ostrovsky { 190511ba86eSBoris Ostrovsky preempt_disable(); 191511ba86eSBoris Ostrovsky 192511ba86eSBoris Ostrovsky if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) { 193511ba86eSBoris Ostrovsky arch_leave_lazy_mmu_mode(); 194511ba86eSBoris Ostrovsky arch_enter_lazy_mmu_mode(); 195511ba86eSBoris Ostrovsky } 196511ba86eSBoris Ostrovsky 197511ba86eSBoris Ostrovsky preempt_enable(); 198511ba86eSBoris Ostrovsky } 199511ba86eSBoris Ostrovsky 2009bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 201224101edSJeremy Fitzhardinge void paravirt_start_context_switch(struct task_struct *prev) 202b1df07bdSGlauber de Oliveira Costa { 2032829b449SJeremy Fitzhardinge BUG_ON(preemptible()); 2042829b449SJeremy Fitzhardinge 205c6ae41e7SAlex Shi if (this_cpu_read(paravirt_lazy_mode) == PARAVIRT_LAZY_MMU) { 206b407fc57SJeremy Fitzhardinge arch_leave_lazy_mmu_mode(); 207224101edSJeremy Fitzhardinge set_ti_thread_flag(task_thread_info(prev), TIF_LAZY_MMU_UPDATES); 208b407fc57SJeremy Fitzhardinge } 209b1df07bdSGlauber de Oliveira Costa enter_lazy(PARAVIRT_LAZY_CPU); 210b1df07bdSGlauber de Oliveira Costa } 211b1df07bdSGlauber de Oliveira Costa 212224101edSJeremy Fitzhardinge void paravirt_end_context_switch(struct task_struct *next) 213b1df07bdSGlauber de Oliveira Costa { 2142829b449SJeremy Fitzhardinge BUG_ON(preemptible()); 2152829b449SJeremy Fitzhardinge 216b407fc57SJeremy Fitzhardinge leave_lazy(PARAVIRT_LAZY_CPU); 217b407fc57SJeremy Fitzhardinge 218224101edSJeremy Fitzhardinge if (test_and_clear_ti_thread_flag(task_thread_info(next), TIF_LAZY_MMU_UPDATES)) 219b407fc57SJeremy Fitzhardinge arch_enter_lazy_mmu_mode(); 220b1df07bdSGlauber de Oliveira Costa } 221*0a53c9acSPeter Zijlstra 222*0a53c9acSPeter Zijlstra static noinstr unsigned long pv_native_read_cr2(void) 223*0a53c9acSPeter Zijlstra { 224*0a53c9acSPeter Zijlstra return native_read_cr2(); 225*0a53c9acSPeter Zijlstra } 2269bad5658SJuergen Gross #endif 227b1df07bdSGlauber de Oliveira Costa 228b1df07bdSGlauber de Oliveira Costa enum paravirt_lazy_mode paravirt_get_lazy_mode(void) 229b1df07bdSGlauber de Oliveira Costa { 230b8bcfe99SJeremy Fitzhardinge if (in_interrupt()) 231b8bcfe99SJeremy Fitzhardinge return PARAVIRT_LAZY_NONE; 232b8bcfe99SJeremy Fitzhardinge 233c6ae41e7SAlex Shi return this_cpu_read(paravirt_lazy_mode); 234b1df07bdSGlauber de Oliveira Costa } 235b1df07bdSGlauber de Oliveira Costa 236b1df07bdSGlauber de Oliveira Costa struct pv_info pv_info = { 237b1df07bdSGlauber de Oliveira Costa .name = "bare hardware", 23840181646SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 239318f5a2aSAndy Lutomirski .extra_user_64bit_cs = __USER_CS, 240318f5a2aSAndy Lutomirski #endif 241b1df07bdSGlauber de Oliveira Costa }; 242b1df07bdSGlauber de Oliveira Costa 24341edafdbSJeremy Fitzhardinge /* 64-bit pagetable entries */ 244da5de7c2SJeremy Fitzhardinge #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) 24541edafdbSJeremy Fitzhardinge 2465c83511bSJuergen Gross struct paravirt_patch_template pv_ops = { 2475c83511bSJuergen Gross /* Cpu ops. */ 2489bad5658SJuergen Gross .cpu.io_delay = native_io_delay, 249b1df07bdSGlauber de Oliveira Costa 2509bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 2515c83511bSJuergen Gross .cpu.cpuid = native_cpuid, 2525c83511bSJuergen Gross .cpu.get_debugreg = native_get_debugreg, 2535c83511bSJuergen Gross .cpu.set_debugreg = native_set_debugreg, 2545c83511bSJuergen Gross .cpu.read_cr0 = native_read_cr0, 2555c83511bSJuergen Gross .cpu.write_cr0 = native_write_cr0, 2565c83511bSJuergen Gross .cpu.write_cr4 = native_write_cr4, 2575c83511bSJuergen Gross .cpu.wbinvd = native_wbinvd, 2585c83511bSJuergen Gross .cpu.read_msr = native_read_msr, 2595c83511bSJuergen Gross .cpu.write_msr = native_write_msr, 2605c83511bSJuergen Gross .cpu.read_msr_safe = native_read_msr_safe, 2615c83511bSJuergen Gross .cpu.write_msr_safe = native_write_msr_safe, 2625c83511bSJuergen Gross .cpu.read_pmc = native_read_pmc, 2635c83511bSJuergen Gross .cpu.load_tr_desc = native_load_tr_desc, 2645c83511bSJuergen Gross .cpu.set_ldt = native_set_ldt, 2655c83511bSJuergen Gross .cpu.load_gdt = native_load_gdt, 2665c83511bSJuergen Gross .cpu.load_idt = native_load_idt, 2675c83511bSJuergen Gross .cpu.store_tr = native_store_tr, 2685c83511bSJuergen Gross .cpu.load_tls = native_load_tls, 2695c83511bSJuergen Gross .cpu.load_gs_index = native_load_gs_index, 2705c83511bSJuergen Gross .cpu.write_ldt_entry = native_write_ldt_entry, 2715c83511bSJuergen Gross .cpu.write_gdt_entry = native_write_gdt_entry, 2725c83511bSJuergen Gross .cpu.write_idt_entry = native_write_idt_entry, 273eba0045fSJeremy Fitzhardinge 2745c83511bSJuergen Gross .cpu.alloc_ldt = paravirt_nop, 2755c83511bSJuergen Gross .cpu.free_ldt = paravirt_nop, 276b1df07bdSGlauber de Oliveira Costa 2775c83511bSJuergen Gross .cpu.load_sp0 = native_load_sp0, 278b1df07bdSGlauber de Oliveira Costa 27999bcd4a6SJuergen Gross #ifdef CONFIG_X86_IOPL_IOPERM 280cadfad87SAndy Lutomirski .cpu.invalidate_io_bitmap = native_tss_invalidate_io_bitmap, 28199bcd4a6SJuergen Gross .cpu.update_io_bitmap = native_tss_update_io_bitmap, 28299bcd4a6SJuergen Gross #endif 28399bcd4a6SJuergen Gross 2845c83511bSJuergen Gross .cpu.start_context_switch = paravirt_nop, 2855c83511bSJuergen Gross .cpu.end_context_switch = paravirt_nop, 2865c83511bSJuergen Gross 2875c83511bSJuergen Gross /* Irq ops. */ 2885c83511bSJuergen Gross .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), 2895c83511bSJuergen Gross .irq.irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), 2905c83511bSJuergen Gross .irq.irq_enable = __PV_IS_CALLEE_SAVE(native_irq_enable), 2915c83511bSJuergen Gross .irq.safe_halt = native_safe_halt, 2925c83511bSJuergen Gross .irq.halt = native_halt, 2936da63eb2SJuergen Gross #endif /* CONFIG_PARAVIRT_XXL */ 2945c83511bSJuergen Gross 2955c83511bSJuergen Gross /* Mmu ops. */ 2962faf153bSThomas Gleixner .mmu.flush_tlb_user = native_flush_tlb_local, 2975c83511bSJuergen Gross .mmu.flush_tlb_kernel = native_flush_tlb_global, 2985c83511bSJuergen Gross .mmu.flush_tlb_one_user = native_flush_tlb_one_user, 2994ce94eabSNadav Amit .mmu.flush_tlb_multi = native_flush_tlb_multi, 3005c83511bSJuergen Gross .mmu.tlb_remove_table = 3015c83511bSJuergen Gross (void (*)(struct mmu_gather *, void *))tlb_remove_page, 3025c83511bSJuergen Gross 303fdc0269eSJuergen Gross .mmu.exit_mmap = paravirt_nop, 304fdc0269eSJuergen Gross 305fdc0269eSJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 306*0a53c9acSPeter Zijlstra .mmu.read_cr2 = __PV_IS_CALLEE_SAVE(pv_native_read_cr2), 307fdc0269eSJuergen Gross .mmu.write_cr2 = native_write_cr2, 308fdc0269eSJuergen Gross .mmu.read_cr3 = __native_read_cr3, 309fdc0269eSJuergen Gross .mmu.write_cr3 = native_write_cr3, 310fdc0269eSJuergen Gross 3115c83511bSJuergen Gross .mmu.pgd_alloc = __paravirt_pgd_alloc, 3125c83511bSJuergen Gross .mmu.pgd_free = paravirt_nop, 3135c83511bSJuergen Gross 3145c83511bSJuergen Gross .mmu.alloc_pte = paravirt_nop, 3155c83511bSJuergen Gross .mmu.alloc_pmd = paravirt_nop, 3165c83511bSJuergen Gross .mmu.alloc_pud = paravirt_nop, 3175c83511bSJuergen Gross .mmu.alloc_p4d = paravirt_nop, 3185c83511bSJuergen Gross .mmu.release_pte = paravirt_nop, 3195c83511bSJuergen Gross .mmu.release_pmd = paravirt_nop, 3205c83511bSJuergen Gross .mmu.release_pud = paravirt_nop, 3215c83511bSJuergen Gross .mmu.release_p4d = paravirt_nop, 3225c83511bSJuergen Gross 3235c83511bSJuergen Gross .mmu.set_pte = native_set_pte, 3245c83511bSJuergen Gross .mmu.set_pmd = native_set_pmd, 3255c83511bSJuergen Gross 3265c83511bSJuergen Gross .mmu.ptep_modify_prot_start = __ptep_modify_prot_start, 3275c83511bSJuergen Gross .mmu.ptep_modify_prot_commit = __ptep_modify_prot_commit, 32808b882c6SJeremy Fitzhardinge 3295c83511bSJuergen Gross .mmu.set_pud = native_set_pud, 330da5de7c2SJeremy Fitzhardinge 3315c83511bSJuergen Gross .mmu.pmd_val = PTE_IDENT, 3325c83511bSJuergen Gross .mmu.make_pmd = PTE_IDENT, 333f95f2f7bSEduardo Habkost 3345c83511bSJuergen Gross .mmu.pud_val = PTE_IDENT, 3355c83511bSJuergen Gross .mmu.make_pud = PTE_IDENT, 336da5de7c2SJeremy Fitzhardinge 3375c83511bSJuergen Gross .mmu.set_p4d = native_set_p4d, 338f2a6a705SKirill A. Shutemov 339f2a6a705SKirill A. Shutemov #if CONFIG_PGTABLE_LEVELS >= 5 3405c83511bSJuergen Gross .mmu.p4d_val = PTE_IDENT, 3415c83511bSJuergen Gross .mmu.make_p4d = PTE_IDENT, 342335437fbSKirill A. Shutemov 3435c83511bSJuergen Gross .mmu.set_pgd = native_set_pgd, 344335437fbSKirill A. Shutemov #endif /* CONFIG_PGTABLE_LEVELS >= 5 */ 345b1df07bdSGlauber de Oliveira Costa 3465c83511bSJuergen Gross .mmu.pte_val = PTE_IDENT, 3475c83511bSJuergen Gross .mmu.pgd_val = PTE_IDENT, 348b1df07bdSGlauber de Oliveira Costa 3495c83511bSJuergen Gross .mmu.make_pte = PTE_IDENT, 3505c83511bSJuergen Gross .mmu.make_pgd = PTE_IDENT, 351b1df07bdSGlauber de Oliveira Costa 3525c83511bSJuergen Gross .mmu.dup_mmap = paravirt_nop, 3535c83511bSJuergen Gross .mmu.activate_mm = paravirt_nop, 354b1df07bdSGlauber de Oliveira Costa 3555c83511bSJuergen Gross .mmu.lazy_mode = { 356b1df07bdSGlauber de Oliveira Costa .enter = paravirt_nop, 357b1df07bdSGlauber de Oliveira Costa .leave = paravirt_nop, 358511ba86eSBoris Ostrovsky .flush = paravirt_nop, 359b1df07bdSGlauber de Oliveira Costa }, 360aeaaa59cSJeremy Fitzhardinge 3615c83511bSJuergen Gross .mmu.set_fixmap = native_set_fixmap, 362fdc0269eSJuergen Gross #endif /* CONFIG_PARAVIRT_XXL */ 3635c83511bSJuergen Gross 3645c83511bSJuergen Gross #if defined(CONFIG_PARAVIRT_SPINLOCKS) 3655c83511bSJuergen Gross /* Lock ops. */ 3665c83511bSJuergen Gross #ifdef CONFIG_SMP 3675c83511bSJuergen Gross .lock.queued_spin_lock_slowpath = native_queued_spin_lock_slowpath, 3685c83511bSJuergen Gross .lock.queued_spin_unlock = 3695c83511bSJuergen Gross PV_CALLEE_SAVE(__native_queued_spin_unlock), 3705c83511bSJuergen Gross .lock.wait = paravirt_nop, 3715c83511bSJuergen Gross .lock.kick = paravirt_nop, 3725c83511bSJuergen Gross .lock.vcpu_is_preempted = 3735c83511bSJuergen Gross PV_CALLEE_SAVE(__native_vcpu_is_preempted), 3745c83511bSJuergen Gross #endif /* SMP */ 3755c83511bSJuergen Gross #endif 376b1df07bdSGlauber de Oliveira Costa }; 377b1df07bdSGlauber de Oliveira Costa 3789bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 3795c83511bSJuergen Gross /* At this point, native_get/set_debugreg has real function entries */ 3805c83511bSJuergen Gross NOKPROBE_SYMBOL(native_get_debugreg); 3815c83511bSJuergen Gross NOKPROBE_SYMBOL(native_set_debugreg); 3825c83511bSJuergen Gross NOKPROBE_SYMBOL(native_load_idt); 383ae755b5aSJuergen Gross 384ae755b5aSJuergen Gross void (*paravirt_iret)(void) = native_iret; 3859bad5658SJuergen Gross #endif 3865c83511bSJuergen Gross 3878af19095SJuergen Gross EXPORT_SYMBOL(pv_ops); 388b1df07bdSGlauber de Oliveira Costa EXPORT_SYMBOL_GPL(pv_info); 389