Index: head/sys/x86/xen/pv.c =================================================================== --- head/sys/x86/xen/pv.c (revision 292661) +++ head/sys/x86/xen/pv.c (revision 292662) @@ -1,443 +1,438 @@ /* * Copyright (c) 2004 Christian Limpach. * Copyright (c) 2004-2006,2008 Kip Macy * Copyright (c) 2008 The NetBSD Foundation, Inc. * Copyright (c) 2013 Roger Pau Monné * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include "opt_ddb.h" #include "opt_kstack_pages.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DDB #include #endif /* Native initial function */ extern u_int64_t hammer_time(u_int64_t, u_int64_t); /* Xen initial function */ uint64_t hammer_time_xen(start_info_t *, uint64_t); #define MAX_E820_ENTRIES 128 /*--------------------------- Forward Declarations ---------------------------*/ static caddr_t xen_pv_parse_preload_data(u_int64_t); static void xen_pv_parse_memmap(caddr_t, vm_paddr_t *, int *); #ifdef SMP static int xen_pv_start_all_aps(void); #endif /*---------------------------- Extern Declarations ---------------------------*/ #ifdef SMP /* Variables used by amd64 mp_machdep to start APs */ -extern struct mtx ap_boot_mtx; -extern void *bootstacks[]; extern char *doublefault_stack; extern char *nmi_stack; -extern void *dpcpu; -extern int bootAP; -extern char *bootSTK; #endif /* * Placed by the linker at the end of the bss section, which is the last * section loaded by Xen before loading the symtab and strtab. */ extern uint32_t end; /*-------------------------------- Global Data -------------------------------*/ /* Xen init_ops implementation. */ struct init_ops xen_init_ops = { .parse_preload_data = xen_pv_parse_preload_data, .early_clock_source_init = xen_clock_init, .early_delay = xen_delay, .parse_memmap = xen_pv_parse_memmap, #ifdef SMP .start_all_aps = xen_pv_start_all_aps, #endif .msi_init = xen_msi_init, }; static struct bios_smap xen_smap[MAX_E820_ENTRIES]; /*-------------------------------- Xen PV init -------------------------------*/ /* * First function called by the Xen PVH boot sequence. * * Set some Xen global variables and prepare the environment so it is * as similar as possible to what native FreeBSD init function expects. */ uint64_t hammer_time_xen(start_info_t *si, uint64_t xenstack) { uint64_t physfree; uint64_t *PT4 = (u_int64_t *)xenstack; uint64_t *PT3 = (u_int64_t *)(xenstack + PAGE_SIZE); uint64_t *PT2 = (u_int64_t *)(xenstack + 2 * PAGE_SIZE); int i; xen_domain_type = XEN_PV_DOMAIN; vm_guest = VM_GUEST_XEN; if ((si == NULL) || (xenstack == 0)) { xc_printf("ERROR: invalid start_info or xen stack, halting\n"); HYPERVISOR_shutdown(SHUTDOWN_crash); } xc_printf("FreeBSD PVH running on %s\n", si->magic); /* We use 3 pages of xen stack for the boot pagetables */ physfree = xenstack + 3 * PAGE_SIZE - KERNBASE; /* Setup Xen global variables */ HYPERVISOR_start_info = si; HYPERVISOR_shared_info = (shared_info_t *)(si->shared_info + KERNBASE); /* * Setup some misc global variables for Xen devices * * XXX: Devices that need these specific variables should * be rewritten to fetch this info by themselves from the * start_info page. */ xen_store = (struct xenstore_domain_interface *) (ptoa(si->store_mfn) + KERNBASE); console_page = (char *)(ptoa(si->console.domU.mfn) + KERNBASE); /* * Use the stack Xen gives us to build the page tables * as native FreeBSD expects to find them (created * by the boot trampoline). */ for (i = 0; i < (PAGE_SIZE / sizeof(uint64_t)); i++) { /* * Each slot of the level 4 pages points * to the same level 3 page */ PT4[i] = ((uint64_t)&PT3[0]) - KERNBASE; PT4[i] |= PG_V | PG_RW | PG_U; /* * Each slot of the level 3 pages points * to the same level 2 page */ PT3[i] = ((uint64_t)&PT2[0]) - KERNBASE; PT3[i] |= PG_V | PG_RW | PG_U; /* * The level 2 page slots are mapped with * 2MB pages for 1GB. */ PT2[i] = i * (2 * 1024 * 1024); PT2[i] |= PG_V | PG_RW | PG_PS | PG_U; } load_cr3(((uint64_t)&PT4[0]) - KERNBASE); /* Set the hooks for early functions that diverge from bare metal */ init_ops = xen_init_ops; apic_ops = xen_apic_ops; /* Now we can jump into the native init function */ return (hammer_time(0, physfree)); } /*-------------------------------- PV specific -------------------------------*/ #ifdef SMP static bool start_xen_ap(int cpu) { struct vcpu_guest_context *ctxt; int ms, cpus = mp_naps; const size_t stacksize = kstack_pages * PAGE_SIZE; /* allocate and set up an idle stack data page */ bootstacks[cpu] = (void *)kmem_malloc(kernel_arena, stacksize, M_WAITOK | M_ZERO); doublefault_stack = (char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO); nmi_stack = (char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO); dpcpu = (void *)kmem_malloc(kernel_arena, DPCPU_SIZE, M_WAITOK | M_ZERO); bootSTK = (char *)bootstacks[cpu] + kstack_pages * PAGE_SIZE - 8; bootAP = cpu; ctxt = malloc(sizeof(*ctxt), M_TEMP, M_WAITOK | M_ZERO); if (ctxt == NULL) panic("unable to allocate memory"); ctxt->flags = VGCF_IN_KERNEL; ctxt->user_regs.rip = (unsigned long) init_secondary; ctxt->user_regs.rsp = (unsigned long) bootSTK; /* Set the AP to use the same page tables */ ctxt->ctrlreg[3] = KPML4phys; if (HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, ctxt)) panic("unable to initialize AP#%d", cpu); free(ctxt, M_TEMP); /* Launch the vCPU */ if (HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL)) panic("unable to start AP#%d", cpu); /* Wait up to 5 seconds for it to start. */ for (ms = 0; ms < 5000; ms++) { if (mp_naps > cpus) return (true); DELAY(1000); } return (false); } static int xen_pv_start_all_aps(void) { int cpu; mtx_init(&ap_boot_mtx, "ap boot", NULL, MTX_SPIN); for (cpu = 1; cpu < mp_ncpus; cpu++) { /* attempt to start the Application Processor */ if (!start_xen_ap(cpu)) panic("AP #%d failed to start!", cpu); CPU_SET(cpu, &all_cpus); /* record AP in CPU map */ } return (mp_naps); } #endif /* SMP */ /* * Functions to convert the "extra" parameters passed by Xen * into FreeBSD boot options. */ static void xen_pv_set_env(void) { char *cmd_line_next, *cmd_line; size_t env_size; cmd_line = HYPERVISOR_start_info->cmd_line; env_size = sizeof(HYPERVISOR_start_info->cmd_line); /* Skip leading spaces */ for (; isspace(*cmd_line) && (env_size != 0); cmd_line++) env_size--; /* Replace ',' with '\0' */ for (cmd_line_next = cmd_line; strsep(&cmd_line_next, ",") != NULL;) ; init_static_kenv(cmd_line, env_size); } static void xen_pv_set_boothowto(void) { int i; char *env; /* get equivalents from the environment */ for (i = 0; howto_names[i].ev != NULL; i++) { if ((env = kern_getenv(howto_names[i].ev)) != NULL) { boothowto |= howto_names[i].mask; freeenv(env); } } } #ifdef DDB /* * The way Xen loads the symtab is different from the native boot loader, * because it's tailored for NetBSD. So we have to adapt and use the same * method as NetBSD. Portions of the code below have been picked from NetBSD: * sys/kern/kern_ksyms.c CVS Revision 1.71. */ static void xen_pv_parse_symtab(void) { Elf_Ehdr *ehdr; Elf_Shdr *shdr; vm_offset_t sym_end; uint32_t size; int i, j; size = end; sym_end = HYPERVISOR_start_info->mod_start != 0 ? HYPERVISOR_start_info->mod_start : HYPERVISOR_start_info->mfn_list; /* * Make sure the size is right headed, sym_end is just a * high boundary, but at least allows us to fail earlier. */ if ((vm_offset_t)&end + size > sym_end) { xc_printf("Unable to load ELF symtab: size mismatch\n"); return; } ehdr = (Elf_Ehdr *)(&end + 1); if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG) || ehdr->e_ident[EI_CLASS] != ELF_TARG_CLASS || ehdr->e_version > 1) { xc_printf("Unable to load ELF symtab: invalid symbol table\n"); return; } shdr = (Elf_Shdr *)((uint8_t *)ehdr + ehdr->e_shoff); /* Find the symbol table and the corresponding string table. */ for (i = 1; i < ehdr->e_shnum; i++) { if (shdr[i].sh_type != SHT_SYMTAB) continue; if (shdr[i].sh_offset == 0) continue; ksymtab = (uintptr_t)((uint8_t *)ehdr + shdr[i].sh_offset); ksymtab_size = shdr[i].sh_size; j = shdr[i].sh_link; if (shdr[j].sh_offset == 0) continue; /* Can this happen? */ kstrtab = (uintptr_t)((uint8_t *)ehdr + shdr[j].sh_offset); break; } if (ksymtab == 0 || kstrtab == 0) { xc_printf( "Unable to load ELF symtab: could not find symtab or strtab\n"); return; } } #endif static caddr_t xen_pv_parse_preload_data(u_int64_t modulep) { caddr_t kmdp; vm_ooffset_t off; vm_paddr_t metadata; if (HYPERVISOR_start_info->mod_start != 0) { preload_metadata = (caddr_t)(HYPERVISOR_start_info->mod_start); kmdp = preload_search_by_type("elf kernel"); if (kmdp == NULL) kmdp = preload_search_by_type("elf64 kernel"); KASSERT(kmdp != NULL, ("unable to find kernel")); /* * Xen has relocated the metadata and the modules, * so we need to recalculate it's position. This is * done by saving the original modulep address and * then calculating the offset with mod_start, * which contains the relocated modulep address. */ metadata = MD_FETCH(kmdp, MODINFOMD_MODULEP, vm_paddr_t); off = HYPERVISOR_start_info->mod_start - metadata; preload_bootstrap_relocate(off); boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int); kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *); kern_envp += off; } else { /* Parse the extra boot information given by Xen */ xen_pv_set_env(); xen_pv_set_boothowto(); kmdp = NULL; } #ifdef DDB xen_pv_parse_symtab(); #endif return (kmdp); } static void xen_pv_parse_memmap(caddr_t kmdp, vm_paddr_t *physmap, int *physmap_idx) { struct xen_memory_map memmap; u_int32_t size; int rc; /* Fetch the E820 map from Xen */ memmap.nr_entries = MAX_E820_ENTRIES; set_xen_guest_handle(memmap.buffer, xen_smap); rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); if (rc) panic("unable to fetch Xen E820 memory map"); size = memmap.nr_entries * sizeof(xen_smap[0]); bios_add_smap_entries(xen_smap, size, physmap, physmap_idx); } Index: head/sys/x86/xen/xen_apic.c =================================================================== --- head/sys/x86/xen/xen_apic.c (revision 292661) +++ head/sys/x86/xen/xen_apic.c (revision 292662) @@ -1,547 +1,541 @@ /* * Copyright (c) 2014 Roger Pau Monné * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /*--------------------------------- Macros -----------------------------------*/ #define XEN_APIC_UNSUPPORTED \ panic("%s: not available in Xen PV port.", __func__) /*--------------------------- Forward Declarations ---------------------------*/ #ifdef SMP static driver_filter_t xen_smp_rendezvous_action; static driver_filter_t xen_invltlb; static driver_filter_t xen_invlpg; static driver_filter_t xen_invlrng; static driver_filter_t xen_invlcache; static driver_filter_t xen_ipi_bitmap_handler; static driver_filter_t xen_cpustop_handler; static driver_filter_t xen_cpususpend_handler; static driver_filter_t xen_cpustophard_handler; #endif -/*---------------------------- Extern Declarations ---------------------------*/ -/* Variables used by mp_machdep to perform the MMU related IPIs */ -#ifdef __amd64__ -extern int pmap_pcid_enabled; -#endif - /*---------------------------------- Macros ----------------------------------*/ #define IPI_TO_IDX(ipi) ((ipi) - APIC_IPI_INTS) /*--------------------------------- Xen IPIs ---------------------------------*/ #ifdef SMP struct xen_ipi_handler { driver_filter_t *filter; const char *description; }; static struct xen_ipi_handler xen_ipis[] = { [IPI_TO_IDX(IPI_RENDEZVOUS)] = { xen_smp_rendezvous_action, "r" }, [IPI_TO_IDX(IPI_INVLTLB)] = { xen_invltlb, "itlb"}, [IPI_TO_IDX(IPI_INVLPG)] = { xen_invlpg, "ipg" }, [IPI_TO_IDX(IPI_INVLRNG)] = { xen_invlrng, "irg" }, [IPI_TO_IDX(IPI_INVLCACHE)] = { xen_invlcache, "ic" }, [IPI_TO_IDX(IPI_BITMAP_VECTOR)] = { xen_ipi_bitmap_handler, "b" }, [IPI_TO_IDX(IPI_STOP)] = { xen_cpustop_handler, "st" }, [IPI_TO_IDX(IPI_SUSPEND)] = { xen_cpususpend_handler, "sp" }, [IPI_TO_IDX(IPI_STOP_HARD)] = { xen_cpustophard_handler, "sth" }, }; #endif /*------------------------------- Per-CPU Data -------------------------------*/ #ifdef SMP DPCPU_DEFINE(xen_intr_handle_t, ipi_handle[nitems(xen_ipis)]); #endif /*------------------------------- Xen PV APIC --------------------------------*/ static void xen_pv_lapic_create(u_int apic_id, int boot_cpu) { #ifdef SMP cpu_add(apic_id, boot_cpu); #endif } static void xen_pv_lapic_init(vm_paddr_t addr) { } static void xen_pv_lapic_setup(int boot) { } static void xen_pv_lapic_dump(const char *str) { printf("cpu%d %s XEN PV LAPIC\n", PCPU_GET(cpuid), str); } static void xen_pv_lapic_disable(void) { } static void xen_pv_lapic_eoi(void) { XEN_APIC_UNSUPPORTED; } static int xen_pv_lapic_id(void) { return (PCPU_GET(apic_id)); } static int xen_pv_lapic_intr_pending(u_int vector) { XEN_APIC_UNSUPPORTED; return (0); } static u_int xen_pv_apic_cpuid(u_int apic_id) { #ifdef SMP return (apic_cpuids[apic_id]); #else return (0); #endif } static u_int xen_pv_apic_alloc_vector(u_int apic_id, u_int irq) { XEN_APIC_UNSUPPORTED; return (0); } static u_int xen_pv_apic_alloc_vectors(u_int apic_id, u_int *irqs, u_int count, u_int align) { XEN_APIC_UNSUPPORTED; return (0); } static void xen_pv_apic_disable_vector(u_int apic_id, u_int vector) { XEN_APIC_UNSUPPORTED; } static void xen_pv_apic_enable_vector(u_int apic_id, u_int vector) { XEN_APIC_UNSUPPORTED; } static void xen_pv_apic_free_vector(u_int apic_id, u_int vector, u_int irq) { XEN_APIC_UNSUPPORTED; } static void xen_pv_lapic_set_logical_id(u_int apic_id, u_int cluster, u_int cluster_id) { XEN_APIC_UNSUPPORTED; } static int xen_pv_lapic_enable_pmc(void) { XEN_APIC_UNSUPPORTED; return (0); } static void xen_pv_lapic_disable_pmc(void) { XEN_APIC_UNSUPPORTED; } static void xen_pv_lapic_reenable_pmc(void) { XEN_APIC_UNSUPPORTED; } static void xen_pv_lapic_enable_cmc(void) { } #ifdef SMP static void xen_pv_lapic_ipi_raw(register_t icrlo, u_int dest) { XEN_APIC_UNSUPPORTED; } static void xen_pv_lapic_ipi_vectored(u_int vector, int dest) { xen_intr_handle_t *ipi_handle; int ipi_idx, to_cpu, self; ipi_idx = IPI_TO_IDX(vector); if (ipi_idx >= nitems(xen_ipis)) panic("IPI out of range"); switch(dest) { case APIC_IPI_DEST_SELF: ipi_handle = DPCPU_GET(ipi_handle); xen_intr_signal(ipi_handle[ipi_idx]); break; case APIC_IPI_DEST_ALL: CPU_FOREACH(to_cpu) { ipi_handle = DPCPU_ID_GET(to_cpu, ipi_handle); xen_intr_signal(ipi_handle[ipi_idx]); } break; case APIC_IPI_DEST_OTHERS: self = PCPU_GET(cpuid); CPU_FOREACH(to_cpu) { if (to_cpu != self) { ipi_handle = DPCPU_ID_GET(to_cpu, ipi_handle); xen_intr_signal(ipi_handle[ipi_idx]); } } break; default: to_cpu = apic_cpuid(dest); ipi_handle = DPCPU_ID_GET(to_cpu, ipi_handle); xen_intr_signal(ipi_handle[ipi_idx]); break; } } static int xen_pv_lapic_ipi_wait(int delay) { XEN_APIC_UNSUPPORTED; return (0); } static int xen_pv_lapic_ipi_alloc(inthand_t *ipifunc) { XEN_APIC_UNSUPPORTED; return (-1); } static void xen_pv_lapic_ipi_free(int vector) { XEN_APIC_UNSUPPORTED; } #endif /* SMP */ static int xen_pv_lapic_set_lvt_mask(u_int apic_id, u_int lvt, u_char masked) { XEN_APIC_UNSUPPORTED; return (0); } static int xen_pv_lapic_set_lvt_mode(u_int apic_id, u_int lvt, uint32_t mode) { XEN_APIC_UNSUPPORTED; return (0); } static int xen_pv_lapic_set_lvt_polarity(u_int apic_id, u_int lvt, enum intr_polarity pol) { XEN_APIC_UNSUPPORTED; return (0); } static int xen_pv_lapic_set_lvt_triggermode(u_int apic_id, u_int lvt, enum intr_trigger trigger) { XEN_APIC_UNSUPPORTED; return (0); } /* Xen apic_ops implementation */ struct apic_ops xen_apic_ops = { .create = xen_pv_lapic_create, .init = xen_pv_lapic_init, .xapic_mode = xen_pv_lapic_disable, .setup = xen_pv_lapic_setup, .dump = xen_pv_lapic_dump, .disable = xen_pv_lapic_disable, .eoi = xen_pv_lapic_eoi, .id = xen_pv_lapic_id, .intr_pending = xen_pv_lapic_intr_pending, .set_logical_id = xen_pv_lapic_set_logical_id, .cpuid = xen_pv_apic_cpuid, .alloc_vector = xen_pv_apic_alloc_vector, .alloc_vectors = xen_pv_apic_alloc_vectors, .enable_vector = xen_pv_apic_enable_vector, .disable_vector = xen_pv_apic_disable_vector, .free_vector = xen_pv_apic_free_vector, .enable_pmc = xen_pv_lapic_enable_pmc, .disable_pmc = xen_pv_lapic_disable_pmc, .reenable_pmc = xen_pv_lapic_reenable_pmc, .enable_cmc = xen_pv_lapic_enable_cmc, #ifdef SMP .ipi_raw = xen_pv_lapic_ipi_raw, .ipi_vectored = xen_pv_lapic_ipi_vectored, .ipi_wait = xen_pv_lapic_ipi_wait, .ipi_alloc = xen_pv_lapic_ipi_alloc, .ipi_free = xen_pv_lapic_ipi_free, #endif .set_lvt_mask = xen_pv_lapic_set_lvt_mask, .set_lvt_mode = xen_pv_lapic_set_lvt_mode, .set_lvt_polarity = xen_pv_lapic_set_lvt_polarity, .set_lvt_triggermode = xen_pv_lapic_set_lvt_triggermode, }; #ifdef SMP /*---------------------------- XEN PV IPI Handlers ---------------------------*/ /* * These are C clones of the ASM functions found in apic_vector. */ static int xen_ipi_bitmap_handler(void *arg) { struct trapframe *frame; frame = arg; ipi_bitmap_handler(*frame); return (FILTER_HANDLED); } static int xen_smp_rendezvous_action(void *arg) { #ifdef COUNT_IPIS (*ipi_rendezvous_counts[PCPU_GET(cpuid)])++; #endif /* COUNT_IPIS */ smp_rendezvous_action(); return (FILTER_HANDLED); } static int xen_invltlb(void *arg) { invltlb_handler(); return (FILTER_HANDLED); } #ifdef __amd64__ static int xen_invltlb_invpcid(void *arg) { invltlb_invpcid_handler(); return (FILTER_HANDLED); } static int xen_invltlb_pcid(void *arg) { invltlb_pcid_handler(); return (FILTER_HANDLED); } #endif static int xen_invlpg(void *arg) { invlpg_handler(); return (FILTER_HANDLED); } static int xen_invlrng(void *arg) { invlrng_handler(); return (FILTER_HANDLED); } static int xen_invlcache(void *arg) { invlcache_handler(); return (FILTER_HANDLED); } static int xen_cpustop_handler(void *arg) { cpustop_handler(); return (FILTER_HANDLED); } static int xen_cpususpend_handler(void *arg) { cpususpend_handler(); return (FILTER_HANDLED); } static int xen_cpustophard_handler(void *arg) { ipi_nmi_handler(); return (FILTER_HANDLED); } /*----------------------------- XEN PV IPI setup -----------------------------*/ /* * Those functions are provided outside of the Xen PV APIC implementation * so PVHVM guests can also use PV IPIs without having an actual Xen PV APIC, * because on PVHVM there's an emulated LAPIC provided by Xen. */ static void xen_cpu_ipi_init(int cpu) { xen_intr_handle_t *ipi_handle; const struct xen_ipi_handler *ipi; device_t dev; int idx, rc; ipi_handle = DPCPU_ID_GET(cpu, ipi_handle); dev = pcpu_find(cpu)->pc_device; KASSERT((dev != NULL), ("NULL pcpu device_t")); for (ipi = xen_ipis, idx = 0; idx < nitems(xen_ipis); ipi++, idx++) { if (ipi->filter == NULL) { ipi_handle[idx] = NULL; continue; } rc = xen_intr_alloc_and_bind_ipi(dev, cpu, ipi->filter, INTR_TYPE_TTY, &ipi_handle[idx]); if (rc != 0) panic("Unable to allocate a XEN IPI port"); xen_intr_describe(ipi_handle[idx], "%s", ipi->description); } } static void xen_setup_cpus(void) { int i; if (!xen_vector_callback_enabled) return; #ifdef __amd64__ if (pmap_pcid_enabled) { xen_ipis[IPI_TO_IDX(IPI_INVLTLB)].filter = invpcid_works ? xen_invltlb_invpcid : xen_invltlb_pcid; } #endif CPU_FOREACH(i) xen_cpu_ipi_init(i); /* Set the xen pv ipi ops to replace the native ones */ if (xen_hvm_domain()) apic_ops.ipi_vectored = xen_pv_lapic_ipi_vectored; } /* We need to setup IPIs before APs are started */ SYSINIT(xen_setup_cpus, SI_SUB_SMP-1, SI_ORDER_FIRST, xen_setup_cpus, NULL); #endif /* SMP */