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> 16b1df07bdSGlauber de Oliveira Costa 17b1df07bdSGlauber de Oliveira Costa #include <asm/bug.h> 18b1df07bdSGlauber de Oliveira Costa #include <asm/paravirt.h> 1950af5eadSPaul Gortmaker #include <asm/debugreg.h> 20b1df07bdSGlauber de Oliveira Costa #include <asm/desc.h> 21b1df07bdSGlauber de Oliveira Costa #include <asm/setup.h> 22a312b37bSEduardo Habkost #include <asm/pgtable.h> 23b1df07bdSGlauber de Oliveira Costa #include <asm/time.h> 24eba0045fSJeremy Fitzhardinge #include <asm/pgalloc.h> 25b1df07bdSGlauber de Oliveira Costa #include <asm/irq.h> 26b1df07bdSGlauber de Oliveira Costa #include <asm/delay.h> 27b1df07bdSGlauber de Oliveira Costa #include <asm/fixmap.h> 28b1df07bdSGlauber de Oliveira Costa #include <asm/apic.h> 29b1df07bdSGlauber de Oliveira Costa #include <asm/tlbflush.h> 30b1df07bdSGlauber de Oliveira Costa #include <asm/timer.h> 31f05e798aSDavid Howells #include <asm/special_insns.h> 3248a8b97cSPeter Zijlstra #include <asm/tlb.h> 3399bcd4a6SJuergen Gross #include <asm/io_bitmap.h> 34b1df07bdSGlauber de Oliveira Costa 35fc57a7c6SAndy Lutomirski /* 36fc57a7c6SAndy Lutomirski * nop stub, which must not clobber anything *including the stack* to 37fc57a7c6SAndy Lutomirski * avoid confusing the entry prologues. 38fc57a7c6SAndy Lutomirski */ 39fc57a7c6SAndy Lutomirski extern void _paravirt_nop(void); 40fc57a7c6SAndy Lutomirski asm (".pushsection .entry.text, \"ax\"\n" 41fc57a7c6SAndy Lutomirski ".global _paravirt_nop\n" 42fc57a7c6SAndy Lutomirski "_paravirt_nop:\n\t" 43fc57a7c6SAndy Lutomirski "ret\n\t" 44fc57a7c6SAndy Lutomirski ".size _paravirt_nop, . - _paravirt_nop\n\t" 45fc57a7c6SAndy Lutomirski ".type _paravirt_nop, @function\n\t" 46fc57a7c6SAndy Lutomirski ".popsection"); 47b1df07bdSGlauber de Oliveira Costa 486f30c1acSThomas Gleixner void __init default_banner(void) 49b1df07bdSGlauber de Oliveira Costa { 50b1df07bdSGlauber de Oliveira Costa printk(KERN_INFO "Booting paravirtualized kernel on %s\n", 51b1df07bdSGlauber de Oliveira Costa pv_info.name); 52b1df07bdSGlauber de Oliveira Costa } 53b1df07bdSGlauber de Oliveira Costa 54b1df07bdSGlauber de Oliveira Costa /* Undefined instruction for dealing with missing ops pointers. */ 55b1df07bdSGlauber de Oliveira Costa static const unsigned char ud2a[] = { 0x0f, 0x0b }; 56b1df07bdSGlauber de Oliveira Costa 57b1df07bdSGlauber de Oliveira Costa struct branch { 58b1df07bdSGlauber de Oliveira Costa unsigned char opcode; 59b1df07bdSGlauber de Oliveira Costa u32 delta; 60b1df07bdSGlauber de Oliveira Costa } __attribute__((packed)); 61b1df07bdSGlauber de Oliveira Costa 621fc654cfSIngo Molnar static unsigned paravirt_patch_call(void *insn_buff, const void *target, 63abc745f8SJuergen Gross unsigned long addr, unsigned len) 64b1df07bdSGlauber de Oliveira Costa { 6511e86dc7SIngo Molnar const int call_len = 5; 661fc654cfSIngo Molnar struct branch *b = insn_buff; 6711e86dc7SIngo Molnar unsigned long delta = (unsigned long)target - (addr+call_len); 68b1df07bdSGlauber de Oliveira Costa 6911e86dc7SIngo Molnar if (len < call_len) { 7011e86dc7SIngo Molnar pr_warn("paravirt: Failed to patch indirect CALL at %ps\n", (void *)addr); 7111e86dc7SIngo Molnar /* Kernel might not be viable if patching fails, bail out: */ 7211e86dc7SIngo Molnar BUG_ON(1); 735800dc5cSPeter Zijlstra } 74b1df07bdSGlauber de Oliveira Costa 75b1df07bdSGlauber de Oliveira Costa b->opcode = 0xe8; /* call */ 76b1df07bdSGlauber de Oliveira Costa b->delta = delta; 7711e86dc7SIngo Molnar BUILD_BUG_ON(sizeof(*b) != call_len); 78b1df07bdSGlauber de Oliveira Costa 7911e86dc7SIngo Molnar return call_len; 80b1df07bdSGlauber de Oliveira Costa } 81b1df07bdSGlauber de Oliveira Costa 829bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 837847c7beSJuergen Gross /* identity function, which can be inlined */ 847847c7beSJuergen Gross u64 notrace _paravirt_ident_64(u64 x) 857847c7beSJuergen Gross { 867847c7beSJuergen Gross return x; 877847c7beSJuergen Gross } 887847c7beSJuergen Gross 891fc654cfSIngo Molnar static unsigned paravirt_patch_jmp(void *insn_buff, const void *target, 90b1df07bdSGlauber de Oliveira Costa unsigned long addr, unsigned len) 91b1df07bdSGlauber de Oliveira Costa { 921fc654cfSIngo Molnar struct branch *b = insn_buff; 93b1df07bdSGlauber de Oliveira Costa unsigned long delta = (unsigned long)target - (addr+5); 94b1df07bdSGlauber de Oliveira Costa 955800dc5cSPeter Zijlstra if (len < 5) { 965800dc5cSPeter Zijlstra #ifdef CONFIG_RETPOLINE 97571d0563SDan Carpenter WARN_ONCE(1, "Failing to patch indirect JMP in %ps\n", (void *)addr); 985800dc5cSPeter Zijlstra #endif 99b1df07bdSGlauber de Oliveira Costa return len; /* call too long for patch site */ 1005800dc5cSPeter Zijlstra } 101b1df07bdSGlauber de Oliveira Costa 102b1df07bdSGlauber de Oliveira Costa b->opcode = 0xe9; /* jmp */ 103b1df07bdSGlauber de Oliveira Costa b->delta = delta; 104b1df07bdSGlauber de Oliveira Costa 105b1df07bdSGlauber de Oliveira Costa return 5; 106b1df07bdSGlauber de Oliveira Costa } 1079bad5658SJuergen Gross #endif 108b1df07bdSGlauber de Oliveira Costa 1099043442bSJuergen Gross DEFINE_STATIC_KEY_TRUE(virt_spin_lock_key); 1109043442bSJuergen Gross 1119043442bSJuergen Gross void __init native_pv_lock_init(void) 1129043442bSJuergen Gross { 11367e87d43SBorislav Petkov if (!boot_cpu_has(X86_FEATURE_HYPERVISOR)) 1149043442bSJuergen Gross static_branch_disable(&virt_spin_lock_key); 1159043442bSJuergen Gross } 1169043442bSJuergen Gross 1171fc654cfSIngo Molnar unsigned paravirt_patch_default(u8 type, void *insn_buff, 1185c83511bSJuergen Gross unsigned long addr, unsigned len) 1195c83511bSJuergen Gross { 1209043442bSJuergen Gross /* 1219043442bSJuergen Gross * Neat trick to map patch type back to the call within the 1229043442bSJuergen Gross * corresponding structure. 1239043442bSJuergen Gross */ 1245c83511bSJuergen Gross void *opfunc = *((void **)&pv_ops + type); 125b1df07bdSGlauber de Oliveira Costa unsigned ret; 126b1df07bdSGlauber de Oliveira Costa 127b1df07bdSGlauber de Oliveira Costa if (opfunc == NULL) 128b1df07bdSGlauber de Oliveira Costa /* If there's no function, patch it with a ud2a (BUG) */ 1291fc654cfSIngo Molnar ret = paravirt_patch_insns(insn_buff, len, ud2a, ud2a+sizeof(ud2a)); 13041edafdbSJeremy Fitzhardinge else if (opfunc == _paravirt_nop) 13179f1d836SBorislav Petkov ret = 0; 13241edafdbSJeremy Fitzhardinge 1337847c7beSJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 13441edafdbSJeremy Fitzhardinge /* identity functions just return their single argument */ 13541edafdbSJeremy Fitzhardinge else if (opfunc == _paravirt_ident_64) 1361fc654cfSIngo Molnar ret = paravirt_patch_ident_64(insn_buff, len); 13741edafdbSJeremy Fitzhardinge 1385c83511bSJuergen Gross else if (type == PARAVIRT_PATCH(cpu.iret) || 1395c83511bSJuergen Gross type == PARAVIRT_PATCH(cpu.usergs_sysret64)) 140b1df07bdSGlauber de Oliveira Costa /* If operation requires a jmp, then jmp */ 1411fc654cfSIngo Molnar ret = paravirt_patch_jmp(insn_buff, opfunc, addr, len); 1429bad5658SJuergen Gross #endif 143b1df07bdSGlauber de Oliveira Costa else 144abc745f8SJuergen Gross /* Otherwise call the function. */ 1451fc654cfSIngo Molnar ret = paravirt_patch_call(insn_buff, opfunc, addr, len); 146b1df07bdSGlauber de Oliveira Costa 147b1df07bdSGlauber de Oliveira Costa return ret; 148b1df07bdSGlauber de Oliveira Costa } 149b1df07bdSGlauber de Oliveira Costa 1501fc654cfSIngo Molnar unsigned paravirt_patch_insns(void *insn_buff, unsigned len, 151b1df07bdSGlauber de Oliveira Costa const char *start, const char *end) 152b1df07bdSGlauber de Oliveira Costa { 153b1df07bdSGlauber de Oliveira Costa unsigned insn_len = end - start; 154b1df07bdSGlauber de Oliveira Costa 1552777cae2SIngo Molnar /* Alternative instruction is too large for the patch site and we cannot continue: */ 1562777cae2SIngo Molnar BUG_ON(insn_len > len || start == NULL); 1572777cae2SIngo Molnar 1581fc654cfSIngo Molnar memcpy(insn_buff, start, insn_len); 159b1df07bdSGlauber de Oliveira Costa 160b1df07bdSGlauber de Oliveira Costa return insn_len; 161b1df07bdSGlauber de Oliveira Costa } 162b1df07bdSGlauber de Oliveira Costa 163b1df07bdSGlauber de Oliveira Costa static void native_flush_tlb(void) 164b1df07bdSGlauber de Oliveira Costa { 165b1df07bdSGlauber de Oliveira Costa __native_flush_tlb(); 166b1df07bdSGlauber de Oliveira Costa } 167b1df07bdSGlauber de Oliveira Costa 168b1df07bdSGlauber de Oliveira Costa /* 169b1df07bdSGlauber de Oliveira Costa * Global pages have to be flushed a bit differently. Not a real 170b1df07bdSGlauber de Oliveira Costa * performance problem because this does not happen often. 171b1df07bdSGlauber de Oliveira Costa */ 172b1df07bdSGlauber de Oliveira Costa static void native_flush_tlb_global(void) 173b1df07bdSGlauber de Oliveira Costa { 174b1df07bdSGlauber de Oliveira Costa __native_flush_tlb_global(); 175b1df07bdSGlauber de Oliveira Costa } 176b1df07bdSGlauber de Oliveira Costa 1771299ef1dSAndy Lutomirski static void native_flush_tlb_one_user(unsigned long addr) 178b1df07bdSGlauber de Oliveira Costa { 1791299ef1dSAndy Lutomirski __native_flush_tlb_one_user(addr); 180b1df07bdSGlauber de Oliveira Costa } 181b1df07bdSGlauber de Oliveira Costa 182c5905afbSIngo Molnar struct static_key paravirt_steal_enabled; 183c5905afbSIngo Molnar struct static_key paravirt_steal_rq_enabled; 1843c404b57SGlauber Costa 1853c404b57SGlauber Costa static u64 native_steal_clock(int cpu) 1863c404b57SGlauber Costa { 1873c404b57SGlauber Costa return 0; 1883c404b57SGlauber Costa } 1893c404b57SGlauber Costa 190b1df07bdSGlauber de Oliveira Costa /* These are in entry.S */ 191b1df07bdSGlauber de Oliveira Costa extern void native_iret(void); 1922be29982SJeremy Fitzhardinge extern void native_usergs_sysret64(void); 193b1df07bdSGlauber de Oliveira Costa 194b1df07bdSGlauber de Oliveira Costa static struct resource reserve_ioports = { 195b1df07bdSGlauber de Oliveira Costa .start = 0, 196b1df07bdSGlauber de Oliveira Costa .end = IO_SPACE_LIMIT, 197b1df07bdSGlauber de Oliveira Costa .name = "paravirt-ioport", 198b1df07bdSGlauber de Oliveira Costa .flags = IORESOURCE_IO | IORESOURCE_BUSY, 199b1df07bdSGlauber de Oliveira Costa }; 200b1df07bdSGlauber de Oliveira Costa 201b1df07bdSGlauber de Oliveira Costa /* 202b1df07bdSGlauber de Oliveira Costa * Reserve the whole legacy IO space to prevent any legacy drivers 203b1df07bdSGlauber de Oliveira Costa * from wasting time probing for their hardware. This is a fairly 204b1df07bdSGlauber de Oliveira Costa * brute-force approach to disabling all non-virtual drivers. 205b1df07bdSGlauber de Oliveira Costa * 206b1df07bdSGlauber de Oliveira Costa * Note that this must be called very early to have any effect. 207b1df07bdSGlauber de Oliveira Costa */ 208b1df07bdSGlauber de Oliveira Costa int paravirt_disable_iospace(void) 209b1df07bdSGlauber de Oliveira Costa { 210f7743fe6SJeremy Fitzhardinge return request_resource(&ioport_resource, &reserve_ioports); 211b1df07bdSGlauber de Oliveira Costa } 212b1df07bdSGlauber de Oliveira Costa 213b1df07bdSGlauber de Oliveira Costa static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; 214b1df07bdSGlauber de Oliveira Costa 215b1df07bdSGlauber de Oliveira Costa static inline void enter_lazy(enum paravirt_lazy_mode mode) 216b1df07bdSGlauber de Oliveira Costa { 217c6ae41e7SAlex Shi BUG_ON(this_cpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); 218b1df07bdSGlauber de Oliveira Costa 219c6ae41e7SAlex Shi this_cpu_write(paravirt_lazy_mode, mode); 220b1df07bdSGlauber de Oliveira Costa } 221b1df07bdSGlauber de Oliveira Costa 222b407fc57SJeremy Fitzhardinge static void leave_lazy(enum paravirt_lazy_mode mode) 223b1df07bdSGlauber de Oliveira Costa { 224c6ae41e7SAlex Shi BUG_ON(this_cpu_read(paravirt_lazy_mode) != mode); 225b1df07bdSGlauber de Oliveira Costa 226c6ae41e7SAlex Shi this_cpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE); 227b1df07bdSGlauber de Oliveira Costa } 228b1df07bdSGlauber de Oliveira Costa 229b1df07bdSGlauber de Oliveira Costa void paravirt_enter_lazy_mmu(void) 230b1df07bdSGlauber de Oliveira Costa { 231b1df07bdSGlauber de Oliveira Costa enter_lazy(PARAVIRT_LAZY_MMU); 232b1df07bdSGlauber de Oliveira Costa } 233b1df07bdSGlauber de Oliveira Costa 234b1df07bdSGlauber de Oliveira Costa void paravirt_leave_lazy_mmu(void) 235b1df07bdSGlauber de Oliveira Costa { 236b407fc57SJeremy Fitzhardinge leave_lazy(PARAVIRT_LAZY_MMU); 237b1df07bdSGlauber de Oliveira Costa } 238b1df07bdSGlauber de Oliveira Costa 239511ba86eSBoris Ostrovsky void paravirt_flush_lazy_mmu(void) 240511ba86eSBoris Ostrovsky { 241511ba86eSBoris Ostrovsky preempt_disable(); 242511ba86eSBoris Ostrovsky 243511ba86eSBoris Ostrovsky if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) { 244511ba86eSBoris Ostrovsky arch_leave_lazy_mmu_mode(); 245511ba86eSBoris Ostrovsky arch_enter_lazy_mmu_mode(); 246511ba86eSBoris Ostrovsky } 247511ba86eSBoris Ostrovsky 248511ba86eSBoris Ostrovsky preempt_enable(); 249511ba86eSBoris Ostrovsky } 250511ba86eSBoris Ostrovsky 2519bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 252224101edSJeremy Fitzhardinge void paravirt_start_context_switch(struct task_struct *prev) 253b1df07bdSGlauber de Oliveira Costa { 2542829b449SJeremy Fitzhardinge BUG_ON(preemptible()); 2552829b449SJeremy Fitzhardinge 256c6ae41e7SAlex Shi if (this_cpu_read(paravirt_lazy_mode) == PARAVIRT_LAZY_MMU) { 257b407fc57SJeremy Fitzhardinge arch_leave_lazy_mmu_mode(); 258224101edSJeremy Fitzhardinge set_ti_thread_flag(task_thread_info(prev), TIF_LAZY_MMU_UPDATES); 259b407fc57SJeremy Fitzhardinge } 260b1df07bdSGlauber de Oliveira Costa enter_lazy(PARAVIRT_LAZY_CPU); 261b1df07bdSGlauber de Oliveira Costa } 262b1df07bdSGlauber de Oliveira Costa 263224101edSJeremy Fitzhardinge void paravirt_end_context_switch(struct task_struct *next) 264b1df07bdSGlauber de Oliveira Costa { 2652829b449SJeremy Fitzhardinge BUG_ON(preemptible()); 2662829b449SJeremy Fitzhardinge 267b407fc57SJeremy Fitzhardinge leave_lazy(PARAVIRT_LAZY_CPU); 268b407fc57SJeremy Fitzhardinge 269224101edSJeremy Fitzhardinge if (test_and_clear_ti_thread_flag(task_thread_info(next), TIF_LAZY_MMU_UPDATES)) 270b407fc57SJeremy Fitzhardinge arch_enter_lazy_mmu_mode(); 271b1df07bdSGlauber de Oliveira Costa } 2729bad5658SJuergen Gross #endif 273b1df07bdSGlauber de Oliveira Costa 274b1df07bdSGlauber de Oliveira Costa enum paravirt_lazy_mode paravirt_get_lazy_mode(void) 275b1df07bdSGlauber de Oliveira Costa { 276b8bcfe99SJeremy Fitzhardinge if (in_interrupt()) 277b8bcfe99SJeremy Fitzhardinge return PARAVIRT_LAZY_NONE; 278b8bcfe99SJeremy Fitzhardinge 279c6ae41e7SAlex Shi return this_cpu_read(paravirt_lazy_mode); 280b1df07bdSGlauber de Oliveira Costa } 281b1df07bdSGlauber de Oliveira Costa 282b1df07bdSGlauber de Oliveira Costa struct pv_info pv_info = { 283b1df07bdSGlauber de Oliveira Costa .name = "bare hardware", 28440181646SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 285b1df07bdSGlauber de Oliveira Costa .kernel_rpl = 0, 286b1df07bdSGlauber de Oliveira Costa .shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */ 287318f5a2aSAndy Lutomirski 288318f5a2aSAndy Lutomirski #ifdef CONFIG_X86_64 289318f5a2aSAndy Lutomirski .extra_user_64bit_cs = __USER_CS, 290318f5a2aSAndy Lutomirski #endif 29188b4755fSGlauber de Oliveira Costa #endif 292b1df07bdSGlauber de Oliveira Costa }; 293b1df07bdSGlauber de Oliveira Costa 29441edafdbSJeremy Fitzhardinge /* 64-bit pagetable entries */ 295da5de7c2SJeremy Fitzhardinge #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) 29641edafdbSJeremy Fitzhardinge 2975c83511bSJuergen Gross struct paravirt_patch_template pv_ops = { 2985c83511bSJuergen Gross /* Init ops. */ 2995c83511bSJuergen Gross .init.patch = native_patch, 300b1df07bdSGlauber de Oliveira Costa 3015c83511bSJuergen Gross /* Time ops. */ 3025c83511bSJuergen Gross .time.sched_clock = native_sched_clock, 3035c83511bSJuergen Gross .time.steal_clock = native_steal_clock, 304b1df07bdSGlauber de Oliveira Costa 3055c83511bSJuergen Gross /* Cpu ops. */ 3069bad5658SJuergen Gross .cpu.io_delay = native_io_delay, 307b1df07bdSGlauber de Oliveira Costa 3089bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 3095c83511bSJuergen Gross .cpu.cpuid = native_cpuid, 3105c83511bSJuergen Gross .cpu.get_debugreg = native_get_debugreg, 3115c83511bSJuergen Gross .cpu.set_debugreg = native_set_debugreg, 3125c83511bSJuergen Gross .cpu.read_cr0 = native_read_cr0, 3135c83511bSJuergen Gross .cpu.write_cr0 = native_write_cr0, 3145c83511bSJuergen Gross .cpu.write_cr4 = native_write_cr4, 3155c83511bSJuergen Gross .cpu.wbinvd = native_wbinvd, 3165c83511bSJuergen Gross .cpu.read_msr = native_read_msr, 3175c83511bSJuergen Gross .cpu.write_msr = native_write_msr, 3185c83511bSJuergen Gross .cpu.read_msr_safe = native_read_msr_safe, 3195c83511bSJuergen Gross .cpu.write_msr_safe = native_write_msr_safe, 3205c83511bSJuergen Gross .cpu.read_pmc = native_read_pmc, 3215c83511bSJuergen Gross .cpu.load_tr_desc = native_load_tr_desc, 3225c83511bSJuergen Gross .cpu.set_ldt = native_set_ldt, 3235c83511bSJuergen Gross .cpu.load_gdt = native_load_gdt, 3245c83511bSJuergen Gross .cpu.load_idt = native_load_idt, 3255c83511bSJuergen Gross .cpu.store_tr = native_store_tr, 3265c83511bSJuergen Gross .cpu.load_tls = native_load_tls, 3275c83511bSJuergen Gross #ifdef CONFIG_X86_64 3285c83511bSJuergen Gross .cpu.load_gs_index = native_load_gs_index, 3295c83511bSJuergen Gross #endif 3305c83511bSJuergen Gross .cpu.write_ldt_entry = native_write_ldt_entry, 3315c83511bSJuergen Gross .cpu.write_gdt_entry = native_write_gdt_entry, 3325c83511bSJuergen Gross .cpu.write_idt_entry = native_write_idt_entry, 333eba0045fSJeremy Fitzhardinge 3345c83511bSJuergen Gross .cpu.alloc_ldt = paravirt_nop, 3355c83511bSJuergen Gross .cpu.free_ldt = paravirt_nop, 336b1df07bdSGlauber de Oliveira Costa 3375c83511bSJuergen Gross .cpu.load_sp0 = native_load_sp0, 338b1df07bdSGlauber de Oliveira Costa 3395c83511bSJuergen Gross #ifdef CONFIG_X86_64 3405c83511bSJuergen Gross .cpu.usergs_sysret64 = native_usergs_sysret64, 3415c83511bSJuergen Gross #endif 3425c83511bSJuergen Gross .cpu.iret = native_iret, 3435c83511bSJuergen Gross .cpu.swapgs = native_swapgs, 344b1df07bdSGlauber de Oliveira Costa 34599bcd4a6SJuergen Gross #ifdef CONFIG_X86_IOPL_IOPERM 34699bcd4a6SJuergen Gross .cpu.update_io_bitmap = native_tss_update_io_bitmap, 34799bcd4a6SJuergen Gross #endif 34899bcd4a6SJuergen Gross 3495c83511bSJuergen Gross .cpu.start_context_switch = paravirt_nop, 3505c83511bSJuergen Gross .cpu.end_context_switch = paravirt_nop, 3515c83511bSJuergen Gross 3525c83511bSJuergen Gross /* Irq ops. */ 3535c83511bSJuergen Gross .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), 3545c83511bSJuergen Gross .irq.restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl), 3555c83511bSJuergen Gross .irq.irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), 3565c83511bSJuergen Gross .irq.irq_enable = __PV_IS_CALLEE_SAVE(native_irq_enable), 3575c83511bSJuergen Gross .irq.safe_halt = native_safe_halt, 3585c83511bSJuergen Gross .irq.halt = native_halt, 3596da63eb2SJuergen Gross #endif /* CONFIG_PARAVIRT_XXL */ 3605c83511bSJuergen Gross 3615c83511bSJuergen Gross /* Mmu ops. */ 3625c83511bSJuergen Gross .mmu.flush_tlb_user = native_flush_tlb, 3635c83511bSJuergen Gross .mmu.flush_tlb_kernel = native_flush_tlb_global, 3645c83511bSJuergen Gross .mmu.flush_tlb_one_user = native_flush_tlb_one_user, 3655c83511bSJuergen Gross .mmu.flush_tlb_others = native_flush_tlb_others, 3665c83511bSJuergen Gross .mmu.tlb_remove_table = 3675c83511bSJuergen Gross (void (*)(struct mmu_gather *, void *))tlb_remove_page, 3685c83511bSJuergen Gross 369fdc0269eSJuergen Gross .mmu.exit_mmap = paravirt_nop, 370fdc0269eSJuergen Gross 371fdc0269eSJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 37255aedddbSPeter Zijlstra .mmu.read_cr2 = __PV_IS_CALLEE_SAVE(native_read_cr2), 373fdc0269eSJuergen Gross .mmu.write_cr2 = native_write_cr2, 374fdc0269eSJuergen Gross .mmu.read_cr3 = __native_read_cr3, 375fdc0269eSJuergen Gross .mmu.write_cr3 = native_write_cr3, 376fdc0269eSJuergen Gross 3775c83511bSJuergen Gross .mmu.pgd_alloc = __paravirt_pgd_alloc, 3785c83511bSJuergen Gross .mmu.pgd_free = paravirt_nop, 3795c83511bSJuergen Gross 3805c83511bSJuergen Gross .mmu.alloc_pte = paravirt_nop, 3815c83511bSJuergen Gross .mmu.alloc_pmd = paravirt_nop, 3825c83511bSJuergen Gross .mmu.alloc_pud = paravirt_nop, 3835c83511bSJuergen Gross .mmu.alloc_p4d = paravirt_nop, 3845c83511bSJuergen Gross .mmu.release_pte = paravirt_nop, 3855c83511bSJuergen Gross .mmu.release_pmd = paravirt_nop, 3865c83511bSJuergen Gross .mmu.release_pud = paravirt_nop, 3875c83511bSJuergen Gross .mmu.release_p4d = paravirt_nop, 3885c83511bSJuergen Gross 3895c83511bSJuergen Gross .mmu.set_pte = native_set_pte, 3905c83511bSJuergen Gross .mmu.set_pte_at = native_set_pte_at, 3915c83511bSJuergen Gross .mmu.set_pmd = native_set_pmd, 3925c83511bSJuergen Gross 3935c83511bSJuergen Gross .mmu.ptep_modify_prot_start = __ptep_modify_prot_start, 3945c83511bSJuergen Gross .mmu.ptep_modify_prot_commit = __ptep_modify_prot_commit, 39508b882c6SJeremy Fitzhardinge 39698233368SKirill A. Shutemov #if CONFIG_PGTABLE_LEVELS >= 3 397b1df07bdSGlauber de Oliveira Costa #ifdef CONFIG_X86_PAE 3985c83511bSJuergen Gross .mmu.set_pte_atomic = native_set_pte_atomic, 3995c83511bSJuergen Gross .mmu.pte_clear = native_pte_clear, 4005c83511bSJuergen Gross .mmu.pmd_clear = native_pmd_clear, 401f95f2f7bSEduardo Habkost #endif 4025c83511bSJuergen Gross .mmu.set_pud = native_set_pud, 403da5de7c2SJeremy Fitzhardinge 4045c83511bSJuergen Gross .mmu.pmd_val = PTE_IDENT, 4055c83511bSJuergen Gross .mmu.make_pmd = PTE_IDENT, 406f95f2f7bSEduardo Habkost 407f2a6a705SKirill A. Shutemov #if CONFIG_PGTABLE_LEVELS >= 4 4085c83511bSJuergen Gross .mmu.pud_val = PTE_IDENT, 4095c83511bSJuergen Gross .mmu.make_pud = PTE_IDENT, 410da5de7c2SJeremy Fitzhardinge 4115c83511bSJuergen Gross .mmu.set_p4d = native_set_p4d, 412f2a6a705SKirill A. Shutemov 413f2a6a705SKirill A. Shutemov #if CONFIG_PGTABLE_LEVELS >= 5 4145c83511bSJuergen Gross .mmu.p4d_val = PTE_IDENT, 4155c83511bSJuergen Gross .mmu.make_p4d = PTE_IDENT, 416335437fbSKirill A. Shutemov 4175c83511bSJuergen Gross .mmu.set_pgd = native_set_pgd, 418335437fbSKirill A. Shutemov #endif /* CONFIG_PGTABLE_LEVELS >= 5 */ 419f2a6a705SKirill A. Shutemov #endif /* CONFIG_PGTABLE_LEVELS >= 4 */ 42098233368SKirill A. Shutemov #endif /* CONFIG_PGTABLE_LEVELS >= 3 */ 421b1df07bdSGlauber de Oliveira Costa 4225c83511bSJuergen Gross .mmu.pte_val = PTE_IDENT, 4235c83511bSJuergen Gross .mmu.pgd_val = PTE_IDENT, 424b1df07bdSGlauber de Oliveira Costa 4255c83511bSJuergen Gross .mmu.make_pte = PTE_IDENT, 4265c83511bSJuergen Gross .mmu.make_pgd = PTE_IDENT, 427b1df07bdSGlauber de Oliveira Costa 4285c83511bSJuergen Gross .mmu.dup_mmap = paravirt_nop, 4295c83511bSJuergen Gross .mmu.activate_mm = paravirt_nop, 430b1df07bdSGlauber de Oliveira Costa 4315c83511bSJuergen Gross .mmu.lazy_mode = { 432b1df07bdSGlauber de Oliveira Costa .enter = paravirt_nop, 433b1df07bdSGlauber de Oliveira Costa .leave = paravirt_nop, 434511ba86eSBoris Ostrovsky .flush = paravirt_nop, 435b1df07bdSGlauber de Oliveira Costa }, 436aeaaa59cSJeremy Fitzhardinge 4375c83511bSJuergen Gross .mmu.set_fixmap = native_set_fixmap, 438fdc0269eSJuergen Gross #endif /* CONFIG_PARAVIRT_XXL */ 4395c83511bSJuergen Gross 4405c83511bSJuergen Gross #if defined(CONFIG_PARAVIRT_SPINLOCKS) 4415c83511bSJuergen Gross /* Lock ops. */ 4425c83511bSJuergen Gross #ifdef CONFIG_SMP 4435c83511bSJuergen Gross .lock.queued_spin_lock_slowpath = native_queued_spin_lock_slowpath, 4445c83511bSJuergen Gross .lock.queued_spin_unlock = 4455c83511bSJuergen Gross PV_CALLEE_SAVE(__native_queued_spin_unlock), 4465c83511bSJuergen Gross .lock.wait = paravirt_nop, 4475c83511bSJuergen Gross .lock.kick = paravirt_nop, 4485c83511bSJuergen Gross .lock.vcpu_is_preempted = 4495c83511bSJuergen Gross PV_CALLEE_SAVE(__native_vcpu_is_preempted), 4505c83511bSJuergen Gross #endif /* SMP */ 4515c83511bSJuergen Gross #endif 452b1df07bdSGlauber de Oliveira Costa }; 453b1df07bdSGlauber de Oliveira Costa 4549bad5658SJuergen Gross #ifdef CONFIG_PARAVIRT_XXL 4555c83511bSJuergen Gross /* At this point, native_get/set_debugreg has real function entries */ 4565c83511bSJuergen Gross NOKPROBE_SYMBOL(native_get_debugreg); 4575c83511bSJuergen Gross NOKPROBE_SYMBOL(native_set_debugreg); 4585c83511bSJuergen Gross NOKPROBE_SYMBOL(native_load_idt); 4599bad5658SJuergen Gross #endif 4605c83511bSJuergen Gross 4618af19095SJuergen Gross EXPORT_SYMBOL(pv_ops); 462b1df07bdSGlauber de Oliveira Costa EXPORT_SYMBOL_GPL(pv_info); 463