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xen_hyper.c
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/*
* xen_hyper.c
*
* Portions Copyright (C) 2006-2007 Fujitsu Limited
* Portions Copyright (C) 2006-2007 VA Linux Systems Japan K.K.
*
* Authors: Itsuro Oda <[email protected]>
* Fumihiko Kakuma <[email protected]>
*
* This file is part of Xencrash.
*
* Xencrash is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Xencrash is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Xencrash; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "defs.h"
#ifdef XEN_HYPERVISOR_ARCH
#include "xen_hyper_defs.h"
static void xen_hyper_schedule_init(void);
/*
* Do initialization for Xen Hyper system here.
*/
void
xen_hyper_init(void)
{
char *buf;
#if defined(X86) || defined(X86_64)
long member_offset;
#endif
#ifdef X86_64
xht->xen_virt_start = symbol_value("start");
/*
* Xen virtual mapping is aligned to 1 GiB boundary.
* Image starts no more than 1 GiB below
* beginning of virtual address space.
*/
xht->xen_virt_start &= 0xffffffffc0000000;
#endif
if (machine_type("X86_64") &&
symbol_exists("xen_phys_start") && !xen_phys_start())
error(WARNING,
"This hypervisor is relocatable; if initialization fails below, try\n"
" using the \"--xen_phys_start <address>\" command line option.\n\n");
if (symbol_exists("crashing_cpu")) {
get_symbol_data("crashing_cpu", sizeof(xht->crashing_cpu),
&xht->crashing_cpu);
} else {
xht->crashing_cpu = XEN_HYPER_PCPU_ID_INVALID;
}
machdep->get_smp_cpus();
machdep->memory_size();
if (symbol_exists("__per_cpu_offset")) {
xht->flags |= XEN_HYPER_SMP;
if((xht->__per_cpu_offset = malloc(sizeof(ulong) * XEN_HYPER_MAX_CPUS())) == NULL) {
error(FATAL, "cannot malloc __per_cpu_offset space.\n");
}
if (!readmem(symbol_value("__per_cpu_offset"), KVADDR,
xht->__per_cpu_offset, sizeof(ulong) * XEN_HYPER_MAX_CPUS(),
"__per_cpu_offset", RETURN_ON_ERROR)) {
error(FATAL, "cannot read __per_cpu_offset.\n");
}
}
#if defined(X86) || defined(X86_64)
if (symbol_exists("__per_cpu_shift")) {
xht->percpu_shift = (int)symbol_value("__per_cpu_shift");
} else if (xen_major_version() >= 3 && xen_minor_version() >= 3) {
xht->percpu_shift = 13;
} else {
xht->percpu_shift = 12;
}
member_offset = MEMBER_OFFSET("cpuinfo_x86", "x86_model_id");
buf = GETBUF(XEN_HYPER_SIZE(cpuinfo_x86));
if (xen_hyper_test_pcpu_id(XEN_HYPER_CRASHING_CPU())) {
xen_hyper_x86_fill_cpu_data(XEN_HYPER_CRASHING_CPU(), buf);
} else {
xen_hyper_x86_fill_cpu_data(xht->cpu_idxs[0], buf);
}
strncpy(xht->utsname.machine, (char *)(buf + member_offset),
sizeof(xht->utsname.machine)-1);
FREEBUF(buf);
#elif defined(IA64)
buf = GETBUF(XEN_HYPER_SIZE(cpuinfo_ia64));
if (xen_hyper_test_pcpu_id(XEN_HYPER_CRASHING_CPU())) {
xen_hyper_ia64_fill_cpu_data(XEN_HYPER_CRASHING_CPU(), buf);
} else {
xen_hyper_ia64_fill_cpu_data(xht->cpu_idxs[0], buf);
}
strncpy(xht->utsname.machine, (char *)(buf + XEN_HYPER_OFFSET(cpuinfo_ia64_vendor)),
sizeof(xht->utsname.machine)-1);
FREEBUF(buf);
#endif
#ifndef IA64
XEN_HYPER_STRUCT_SIZE_INIT(note_buf_t, "note_buf_t");
XEN_HYPER_STRUCT_SIZE_INIT(crash_note_t, "crash_note_t");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_t_core, "crash_note_t", "core");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_t_xen, "crash_note_t", "xen");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_t_xen_regs, "crash_note_t", "xen_regs");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_t_xen_info, "crash_note_t", "xen_info");
XEN_HYPER_STRUCT_SIZE_INIT(crash_note_core_t, "crash_note_core_t");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_core_t_note, "crash_note_core_t", "note");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_core_t_desc, "crash_note_core_t", "desc");
XEN_HYPER_STRUCT_SIZE_INIT(crash_note_xen_t, "crash_note_xen_t");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_xen_t_note, "crash_note_xen_t", "note");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_xen_t_desc, "crash_note_xen_t", "desc");
XEN_HYPER_STRUCT_SIZE_INIT(crash_note_xen_core_t, "crash_note_xen_core_t");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_xen_core_t_note, "crash_note_xen_core_t", "note");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_xen_core_t_desc, "crash_note_xen_core_t", "desc");
XEN_HYPER_STRUCT_SIZE_INIT(crash_note_xen_info_t, "crash_note_xen_info_t");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_xen_info_t_note, "crash_note_xen_info_t", "note");
XEN_HYPER_MEMBER_OFFSET_INIT(crash_note_xen_info_t_desc, "crash_note_xen_info_t", "desc");
XEN_HYPER_STRUCT_SIZE_INIT(crash_xen_core_t, "crash_xen_core_t");
XEN_HYPER_STRUCT_SIZE_INIT(crash_xen_info_t, "crash_xen_info_t");
XEN_HYPER_STRUCT_SIZE_INIT(xen_crash_xen_regs_t, "xen_crash_xen_regs_t");
XEN_HYPER_STRUCT_SIZE_INIT(ELF_Prstatus,"ELF_Prstatus");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_info, "ELF_Prstatus", "pr_info");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_cursig, "ELF_Prstatus", "pr_cursig");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_sigpend, "ELF_Prstatus", "pr_sigpend");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_sighold, "ELF_Prstatus", "pr_sighold");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_pid, "ELF_Prstatus", "pr_pid");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_ppid, "ELF_Prstatus", "pr_ppid");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_pgrp, "ELF_Prstatus", "pr_pgrp");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_sid, "ELF_Prstatus", "pr_sid");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_utime, "ELF_Prstatus", "pr_utime");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_stime, "ELF_Prstatus", "pr_stime");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_cutime, "ELF_Prstatus", "pr_cutime");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_cstime, "ELF_Prstatus", "pr_cstime");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_reg, "ELF_Prstatus", "pr_reg");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Prstatus_pr_fpvalid, "ELF_Prstatus", "pr_fpvalid");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Timeval_tv_sec, "ELF_Timeval", "tv_sec");
XEN_HYPER_MEMBER_OFFSET_INIT(ELF_Timeval_tv_usec, "ELF_Timeval", "tv_usec");
XEN_HYPER_STRUCT_SIZE_INIT(ELF_Signifo,"ELF_Signifo");
XEN_HYPER_STRUCT_SIZE_INIT(ELF_Gregset,"ELF_Gregset");
XEN_HYPER_STRUCT_SIZE_INIT(ELF_Timeval,"ELF_Timeval");
#endif
XEN_HYPER_STRUCT_SIZE_INIT(domain, "domain");
XEN_HYPER_STRUCT_SIZE_INIT(vcpu, "vcpu");
#ifndef IA64
XEN_HYPER_STRUCT_SIZE_INIT(cpu_info, "cpu_info");
#endif
XEN_HYPER_STRUCT_SIZE_INIT(cpu_user_regs, "cpu_user_regs");
xht->idle_vcpu_size = get_array_length("idle_vcpu", NULL, 0);
xht->idle_vcpu_array = (ulong *)malloc(xht->idle_vcpu_size * sizeof(ulong));
if (xht->idle_vcpu_array == NULL) {
error(FATAL, "cannot malloc idle_vcpu_array space.\n");
}
if (!readmem(symbol_value("idle_vcpu"), KVADDR, xht->idle_vcpu_array,
xht->idle_vcpu_size * sizeof(ulong), "idle_vcpu_array",
RETURN_ON_ERROR)) {
error(FATAL, "cannot read idle_vcpu array.\n");
}
/*
* Do some initialization.
*/
#ifndef IA64
xen_hyper_dumpinfo_init();
#endif
xhmachdep->pcpu_init();
xen_hyper_domain_init();
xen_hyper_vcpu_init();
xen_hyper_misc_init();
/*
* xen_hyper_post_init() have to be called after all initialize
* functions finished.
*/
xen_hyper_post_init();
}
/*
* Do initialization for Domain of Xen Hyper system here.
*/
void
xen_hyper_domain_init(void)
{
XEN_HYPER_MEMBER_OFFSET_INIT(domain_domain_id, "domain", "domain_id");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_tot_pages, "domain", "tot_pages");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_max_pages, "domain", "max_pages");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_xenheap_pages, "domain", "xenheap_pages");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_shared_info, "domain", "shared_info");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_sched_priv, "domain", "sched_priv");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_next_in_list, "domain", "next_in_list");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_domain_flags, "domain", "domain_flags");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_evtchn, "domain", "evtchn");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_hvm, "domain", "is_hvm");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_guest_type, "domain", "guest_type");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_privileged, "domain", "is_privileged");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_debugger_attached, "domain", "debugger_attached");
/*
* Will be removed in Xen 4.4 (hg ae9b223a675d),
* need to check that with XEN_HYPER_VALID_MEMBER() before using
*/
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_polling, "domain", "is_polling");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_dying, "domain", "is_dying");
/*
* With Xen 4.2.5 is_paused_by_controller changed to
* controller_pause_count.
*/
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_paused_by_controller, "domain", "is_paused_by_controller");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_controller_pause_count, "domain", "controller_pause_count");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_shutting_down, "domain", "is_shutting_down");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_is_shut_down, "domain", "is_shut_down");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_vcpu, "domain", "vcpu");
XEN_HYPER_MEMBER_SIZE_INIT(domain_vcpu, "domain", "vcpu");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_max_vcpus, "domain", "max_vcpus");
XEN_HYPER_MEMBER_OFFSET_INIT(domain_arch, "domain", "arch");
XEN_HYPER_STRUCT_SIZE_INIT(arch_shared_info, "arch_shared_info");
XEN_HYPER_MEMBER_OFFSET_INIT(arch_shared_info_max_pfn, "arch_shared_info", "max_pfn");
XEN_HYPER_MEMBER_OFFSET_INIT(arch_shared_info_pfn_to_mfn_frame_list_list, "arch_shared_info", "pfn_to_mfn_frame_list_list");
XEN_HYPER_MEMBER_OFFSET_INIT(arch_shared_info_nmi_reason, "arch_shared_info", "nmi_reason");
XEN_HYPER_STRUCT_SIZE_INIT(shared_info, "shared_info");
XEN_HYPER_MEMBER_OFFSET_INIT(shared_info_vcpu_info, "shared_info", "vcpu_info");
XEN_HYPER_MEMBER_OFFSET_INIT(shared_info_evtchn_pending, "shared_info", "evtchn_pending");
XEN_HYPER_MEMBER_OFFSET_INIT(shared_info_evtchn_mask, "shared_info", "evtchn_mask");
XEN_HYPER_MEMBER_OFFSET_INIT(shared_info_arch, "shared_info", "arch");
XEN_HYPER_STRUCT_SIZE_INIT(arch_domain, "arch_domain");
#ifdef IA64
XEN_HYPER_MEMBER_OFFSET_INIT(arch_domain_mm, "arch_domain", "mm");
XEN_HYPER_STRUCT_SIZE_INIT(mm_struct, "mm_struct");
XEN_HYPER_MEMBER_OFFSET_INIT(mm_struct_pgd, "mm_struct", "pgd");
#endif
if((xhdt->domain_struct = malloc(XEN_HYPER_SIZE(domain))) == NULL) {
error(FATAL, "cannot malloc domain struct space.\n");
}
if((xhdt->domain_struct_verify = malloc(XEN_HYPER_SIZE(domain))) == NULL) {
error(FATAL, "cannot malloc domain struct space to verification.\n");
}
xen_hyper_refresh_domain_context_space();
xhdt->flags |= XEN_HYPER_DOMAIN_F_INIT;
}
/*
* Do initialization for vcpu of Xen Hyper system here.
*/
void
xen_hyper_vcpu_init(void)
{
XEN_HYPER_STRUCT_SIZE_INIT(timer, "timer");
XEN_HYPER_MEMBER_OFFSET_INIT(timer_expires, "timer", "expires");
XEN_HYPER_MEMBER_OFFSET_INIT(timer_cpu, "timer", "cpu");
XEN_HYPER_MEMBER_OFFSET_INIT(timer_function, "timer", "function");
XEN_HYPER_MEMBER_OFFSET_INIT(timer_data, "timer", "data");
XEN_HYPER_MEMBER_OFFSET_INIT(timer_heap_offset, "timer", "heap_offset");
XEN_HYPER_MEMBER_OFFSET_INIT(timer_killed, "timer", "killed");
XEN_HYPER_STRUCT_SIZE_INIT(vcpu_runstate_info, "vcpu_runstate_info");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_runstate_info_state, "vcpu_runstate_info", "state");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_runstate_info_state_entry_time, "vcpu_runstate_info", "state_entry_time");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_runstate_info_time, "vcpu_runstate_info", "time");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_vcpu_id, "vcpu", "vcpu_id");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_processor, "vcpu", "processor");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_vcpu_info, "vcpu", "vcpu_info");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_domain, "vcpu", "domain");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_next_in_list, "vcpu", "next_in_list");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_timer, "vcpu", "timer");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_sleep_tick, "vcpu", "sleep_tick");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_poll_timer, "vcpu", "poll_timer");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_sched_priv, "vcpu", "sched_priv");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_runstate, "vcpu", "runstate");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_runstate_guest, "vcpu", "runstate_guest");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_vcpu_flags, "vcpu", "vcpu_flags");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_pause_count, "vcpu", "pause_count");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_virq_to_evtchn, "vcpu", "virq_to_evtchn");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_cpu_affinity, "vcpu", "cpu_affinity");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_nmi_addr, "vcpu", "nmi_addr");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_vcpu_dirty_cpumask, "vcpu", "vcpu_dirty_cpumask");
XEN_HYPER_MEMBER_OFFSET_INIT(vcpu_arch, "vcpu", "arch");
#ifdef IA64
XEN_HYPER_ASSIGN_OFFSET(vcpu_thread_ksp) =
MEMBER_OFFSET("vcpu", "arch") + MEMBER_OFFSET("arch_vcpu", "_thread") +
MEMBER_OFFSET("thread_struct", "ksp");
#endif
if((xhvct->vcpu_struct = malloc(XEN_HYPER_SIZE(vcpu))) == NULL) {
error(FATAL, "cannot malloc vcpu struct space.\n");
}
if((xhvct->vcpu_struct_verify = malloc(XEN_HYPER_SIZE(vcpu))) == NULL) {
error(FATAL, "cannot malloc vcpu struct space to verification.\n");
}
xen_hyper_refresh_vcpu_context_space();
xhvct->flags |= XEN_HYPER_VCPU_F_INIT;
xhvct->idle_vcpu = symbol_value("idle_vcpu");
}
/*
* Do initialization for pcpu of Xen Hyper system here.
*/
#if defined(X86) || defined(X86_64)
void
xen_hyper_x86_pcpu_init(void)
{
ulong cpu_info;
ulong init_tss_base, init_tss;
ulong sp;
struct xen_hyper_pcpu_context *pcc;
char *buf, *bp;
int i, cpuid;
int flag;
XEN_HYPER_MEMBER_OFFSET_INIT(cpu_info_guest_cpu_user_regs, "cpu_info", "guest_cpu_user_regs");
XEN_HYPER_MEMBER_OFFSET_INIT(cpu_info_processor_id, "cpu_info", "processor_id");
XEN_HYPER_MEMBER_OFFSET_INIT(cpu_info_current_vcpu, "cpu_info", "current_vcpu");
if((xhpct->pcpu_struct = malloc(XEN_HYPER_SIZE(cpu_info))) == NULL) {
error(FATAL, "cannot malloc pcpu struct space.\n");
}
/* get physical cpu context */
xen_hyper_alloc_pcpu_context_space(XEN_HYPER_MAX_CPUS());
if (symbol_exists("per_cpu__init_tss")) {
init_tss_base = symbol_value("per_cpu__init_tss");
flag = TRUE;
} else if (symbol_exists("per_cpu__tss_page")) {
init_tss_base = symbol_value("per_cpu__tss_page");
flag = TRUE;
} else {
init_tss_base = symbol_value("init_tss");
flag = FALSE;
}
buf = GETBUF(XEN_HYPER_SIZE(tss));
for_cpu_indexes(i, cpuid)
{
if (flag)
init_tss = xen_hyper_per_cpu(init_tss_base, cpuid);
else
init_tss = init_tss_base +
XEN_HYPER_SIZE(tss) * cpuid;
if (!readmem(init_tss, KVADDR, buf,
XEN_HYPER_SIZE(tss), "init_tss", RETURN_ON_ERROR)) {
error(FATAL, "cannot read init_tss.\n");
}
if (machine_type("X86")) {
sp = ULONG(buf + XEN_HYPER_OFFSET(tss_esp0));
} else if (machine_type("X86_64")) {
sp = ULONG(buf + XEN_HYPER_OFFSET(tss_rsp0));
} else
sp = 0;
cpu_info = XEN_HYPER_GET_CPU_INFO(sp);
if (CRASHDEBUG(1)) {
fprintf(fp, "sp=%lx, cpu_info=%lx\n", sp, cpu_info);
}
if(!(bp = xen_hyper_read_pcpu(cpu_info))) {
error(FATAL, "cannot read cpu_info.\n");
}
pcc = &xhpct->context_array[cpuid];
xen_hyper_store_pcpu_context(pcc, cpu_info, bp);
xen_hyper_store_pcpu_context_tss(pcc, init_tss, buf);
}
FREEBUF(buf);
}
#elif defined(IA64)
void
xen_hyper_ia64_pcpu_init(void)
{
struct xen_hyper_pcpu_context *pcc;
int i, cpuid;
/* get physical cpu context */
xen_hyper_alloc_pcpu_context_space(XEN_HYPER_MAX_CPUS());
for_cpu_indexes(i, cpuid)
{
pcc = &xhpct->context_array[cpuid];
pcc->processor_id = cpuid;
}
}
#endif
/*
* Do initialization for some miscellaneous thing
* of Xen Hyper system here.
*/
void
xen_hyper_misc_init(void)
{
XEN_HYPER_STRUCT_SIZE_INIT(schedule_data, "schedule_data");
XEN_HYPER_MEMBER_OFFSET_INIT(schedule_data_schedule_lock, "schedule_data", "schedule_lock");
XEN_HYPER_MEMBER_OFFSET_INIT(schedule_data_curr, "schedule_data", "curr");
if (MEMBER_EXISTS("schedule_data", "idle"))
XEN_HYPER_MEMBER_OFFSET_INIT(schedule_data_idle, "schedule_data", "idle");
XEN_HYPER_MEMBER_OFFSET_INIT(schedule_data_sched_priv, "schedule_data", "sched_priv");
XEN_HYPER_MEMBER_OFFSET_INIT(schedule_data_s_timer, "schedule_data", "s_timer");
XEN_HYPER_MEMBER_OFFSET_INIT(schedule_data_tick, "schedule_data", "tick");
XEN_HYPER_STRUCT_SIZE_INIT(scheduler, "scheduler");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_name, "scheduler", "name");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_opt_name, "scheduler", "opt_name");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_sched_id, "scheduler", "sched_id");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_init, "scheduler", "init");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_tick, "scheduler", "tick");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_init_vcpu, "scheduler", "init_vcpu");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_destroy_domain, "scheduler", "destroy_domain");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_sleep, "scheduler", "sleep");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_wake, "scheduler", "wake");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_set_affinity, "scheduler", "set_affinity");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_do_schedule, "scheduler", "do_schedule");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_adjust, "scheduler", "adjust");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_dump_settings, "scheduler", "dump_settings");
XEN_HYPER_MEMBER_OFFSET_INIT(scheduler_dump_cpu_state, "scheduler", "dump_cpu_state");
xen_hyper_schedule_init();
}
/*
* Do initialization for scheduler of Xen Hyper system here.
*/
#define XEN_HYPER_SCHEDULER_NAME 1024
static int section_size(char *start_section, char *end_section)
{
ulong sp_start, sp_end;
sp_start = symbol_value(start_section);
sp_end = symbol_value(end_section);
return (sp_end - sp_start) / sizeof(long);
}
static void
xen_hyper_schedule_init(void)
{
ulong addr, opt_sched, schedulers, opt_name;
long scheduler_opt_name;
long *schedulers_buf;
int nr_schedulers;
struct xen_hyper_sched_context *schc;
char *buf;
char opt_name_buf[XEN_HYPER_OPT_SCHED_SIZE];
int i, cpuid, flag;
char *sp_name;
/* get scheduler information */
if((xhscht->scheduler_struct =
malloc(XEN_HYPER_SIZE(scheduler))) == NULL) {
error(FATAL, "cannot malloc scheduler struct space.\n");
}
buf = GETBUF(XEN_HYPER_SCHEDULER_NAME);
scheduler_opt_name = XEN_HYPER_OFFSET(scheduler_opt_name);
if (symbol_exists("ops")) {
if (!readmem(symbol_value("ops") + scheduler_opt_name, KVADDR,
&opt_sched, sizeof(ulong), "ops.opt_name",
RETURN_ON_ERROR)) {
error(FATAL, "cannot read ops.opt_name.\n");
}
} else {
opt_sched = symbol_value("opt_sched");
}
if (!readmem(opt_sched, KVADDR, xhscht->opt_sched,
XEN_HYPER_OPT_SCHED_SIZE, "opt_sched,", RETURN_ON_ERROR)) {
error(FATAL, "cannot read opt_sched,.\n");
}
/* symbol exists since Xen 4.7 */
if (symbol_exists("__start_schedulers_array")) {
sp_name = "__start_schedulers_array";
nr_schedulers = section_size("__start_schedulers_array",
"__end_schedulers_array");
} else {
sp_name = "schedulers";
nr_schedulers = get_array_length("schedulers", 0, 0);
}
schedulers_buf = (long *)GETBUF(nr_schedulers * sizeof(long));
schedulers = symbol_value(sp_name);
addr = schedulers;
while (xhscht->name == NULL) {
if (!readmem(addr, KVADDR, schedulers_buf,
sizeof(long) * nr_schedulers,
"schedulers", RETURN_ON_ERROR)) {
error(FATAL, "cannot read schedulers.\n");
}
for (i = 0; i < nr_schedulers; i++) {
if (schedulers_buf[i] == 0) {
error(FATAL, "schedule data not found.\n");
}
if (!readmem(schedulers_buf[i], KVADDR,
xhscht->scheduler_struct, XEN_HYPER_SIZE(scheduler),
"scheduler", RETURN_ON_ERROR)) {
error(FATAL, "cannot read scheduler.\n");
}
opt_name = ULONG(xhscht->scheduler_struct +
scheduler_opt_name);
if (!readmem(opt_name, KVADDR, opt_name_buf,
XEN_HYPER_OPT_SCHED_SIZE, "opt_name", RETURN_ON_ERROR)) {
error(FATAL, "cannot read opt_name.\n");
}
if (strncmp(xhscht->opt_sched, opt_name_buf,
XEN_HYPER_OPT_SCHED_SIZE))
continue;
xhscht->scheduler = schedulers_buf[i];
xhscht->sched_id = INT(xhscht->scheduler_struct +
XEN_HYPER_OFFSET(scheduler_sched_id));
addr = ULONG(xhscht->scheduler_struct +
XEN_HYPER_OFFSET(scheduler_name));
if (!readmem(addr, KVADDR, buf, XEN_HYPER_SCHEDULER_NAME,
"scheduler_name", RETURN_ON_ERROR)) {
error(FATAL, "cannot read scheduler_name.\n");
}
if (strlen(buf) >= XEN_HYPER_SCHEDULER_NAME) {
error(FATAL, "cannot read scheduler_name.\n");
}
if((xhscht->name = malloc(strlen(buf) + 1)) == NULL) {
error(FATAL, "cannot malloc scheduler_name space.\n");
}
BZERO(xhscht->name, strlen(buf) + 1);
BCOPY(buf, xhscht->name, strlen(buf));
break;
}
addr += sizeof(long) * nr_schedulers;
}
FREEBUF(buf);
FREEBUF(schedulers_buf);
/* get schedule_data information */
if((xhscht->sched_context_array =
malloc(sizeof(struct xen_hyper_sched_context) * XEN_HYPER_MAX_CPUS())) == NULL) {
error(FATAL, "cannot malloc xen_hyper_sched_context struct space.\n");
}
BZERO(xhscht->sched_context_array,
sizeof(struct xen_hyper_sched_context) * XEN_HYPER_MAX_CPUS());
buf = GETBUF(XEN_HYPER_SIZE(schedule_data));
if (symbol_exists("per_cpu__schedule_data")) {
addr = symbol_value("per_cpu__schedule_data");
flag = TRUE;
} else {
addr = symbol_value("schedule_data");
flag = FALSE;
}
for_cpu_indexes(i, cpuid)
{
schc = &xhscht->sched_context_array[cpuid];
if (flag) {
schc->schedule_data =
xen_hyper_per_cpu(addr, i);
} else {
schc->schedule_data = addr +
XEN_HYPER_SIZE(schedule_data) * i;
}
if (!readmem(schc->schedule_data,
KVADDR, buf, XEN_HYPER_SIZE(schedule_data),
"schedule_data", RETURN_ON_ERROR)) {
error(FATAL, "cannot read schedule_data.\n");
}
schc->cpu_id = cpuid;
schc->curr = ULONG(buf + XEN_HYPER_OFFSET(schedule_data_curr));
if (MEMBER_EXISTS("schedule_data", "idle"))
schc->idle = ULONG(buf + XEN_HYPER_OFFSET(schedule_data_idle));
else
schc->idle = xht->idle_vcpu_array[cpuid];
schc->sched_priv =
ULONG(buf + XEN_HYPER_OFFSET(schedule_data_sched_priv));
if (XEN_HYPER_VALID_MEMBER(schedule_data_tick))
schc->tick = ULONG(buf + XEN_HYPER_OFFSET(schedule_data_tick));
}
FREEBUF(buf);
}
/*
* This should be called after all initailize process finished.
*/
void
xen_hyper_post_init(void)
{
struct xen_hyper_pcpu_context *pcc;
int i, cpuid;
/* set current vcpu to pcpu context */
for_cpu_indexes(i, cpuid)
{
pcc = &xhpct->context_array[cpuid];
if (!pcc->current_vcpu) {
pcc->current_vcpu =
xen_hyper_get_active_vcpu_from_pcpuid(cpuid);
}
}
/* set pcpu last */
if (!(xhpct->last =
xen_hyper_id_to_pcpu_context(XEN_HYPER_CRASHING_CPU()))) {
xhpct->last = &xhpct->context_array[xht->cpu_idxs[0]];
}
/* set vcpu last */
if (xhpct->last) {
xhvct->last =
xen_hyper_vcpu_to_vcpu_context(xhpct->last->current_vcpu);
/* set crashing vcpu */
xht->crashing_vcc = xhvct->last;
}
if (!xhvct->last) {
xhvct->last = xhvct->vcpu_context_arrays->context_array;
}
/* set domain last */
if (xhvct->last) {
xhdt->last =
xen_hyper_domain_to_domain_context(xhvct->last->domain);
}
if (!xhdt->last) {
xhdt->last = xhdt->context_array;
}
}
/*
* Do initialization for dump information here.
*/
void
xen_hyper_dumpinfo_init(void)
{
Elf32_Nhdr *note;
char *buf, *bp, *np, *upp;
char *nccp, *xccp;
ulong addr;
long size;
int i, cpuid, samp_cpuid;
/*
* NOTE kakuma: It is not clear that what kind of
* a elf note format each one of the xen uses.
* So, we decide it confirming whether a symbol exists.
*/
if (STRUCT_EXISTS("note_buf_t"))
xhdit->note_ver = XEN_HYPER_ELF_NOTE_V1;
else if (STRUCT_EXISTS("crash_note_xen_t"))
xhdit->note_ver = XEN_HYPER_ELF_NOTE_V2;
else if (STRUCT_EXISTS("crash_xen_core_t")) {
if (STRUCT_EXISTS("crash_note_xen_core_t"))
xhdit->note_ver = XEN_HYPER_ELF_NOTE_V3;
else
xhdit->note_ver = XEN_HYPER_ELF_NOTE_V4;
} else {
error(WARNING, "found unsupported elf note format while checking of xen dumpinfo.\n");
return;
}
if (!xen_hyper_test_pcpu_id(XEN_HYPER_CRASHING_CPU())) {
error(WARNING, "crashing_cpu not found.\n");
return;
}
/* allocate a context area */
size = sizeof(struct xen_hyper_dumpinfo_context) * machdep->get_smp_cpus();
if((xhdit->context_array = malloc(size)) == NULL) {
error(FATAL, "cannot malloc dumpinfo table context space.\n");
}
BZERO(xhdit->context_array, size);
size = sizeof(struct xen_hyper_dumpinfo_context_xen_core) * machdep->get_smp_cpus();
if((xhdit->context_xen_core_array = malloc(size)) == NULL) {
error(FATAL, "cannot malloc dumpinfo table context_xen_core_array space.\n");
}
BZERO(xhdit->context_xen_core_array, size);
if (symbol_exists("per_cpu__crash_notes"))
addr = symbol_value("per_cpu__crash_notes");
else
get_symbol_data("crash_notes", sizeof(ulong), &addr);
for (i = 0; i < machdep->get_smp_cpus(); i++) {
ulong addr_notes;
if (symbol_exists("per_cpu__crash_notes"))
addr_notes = xen_hyper_per_cpu(addr, i);
else
addr_notes = addr + i * STRUCT_SIZE("crash_note_range_t") +
MEMBER_OFFSET("crash_note_range_t", "start");
if (xhdit->note_ver == XEN_HYPER_ELF_NOTE_V4) {
if (!readmem(addr_notes, KVADDR, &(xhdit->context_array[i].note),
sizeof(ulong), "crash_notes", RETURN_ON_ERROR)) {
error(WARNING, "cannot read crash_notes.\n");
return;
}
} else {
xhdit->context_array[i].note = addr_notes;
}
}
if (xhdit->note_ver == XEN_HYPER_ELF_NOTE_V1) {
xhdit->note_size = XEN_HYPER_SIZE(note_buf_t);
} else if (xhdit->note_ver == XEN_HYPER_ELF_NOTE_V4) {
xhdit->note_size = XEN_HYPER_ELF_NOTE_V4_NOTE_SIZE;
} else {
xhdit->note_size = XEN_HYPER_SIZE(crash_note_t);
}
/* read a sample note */
buf = GETBUF(xhdit->note_size);
if (xhdit->note_ver == XEN_HYPER_ELF_NOTE_V4)
samp_cpuid = xht->cpu_idxs[0];
else
samp_cpuid = XEN_HYPER_CRASHING_CPU();
xhdit->xen_info_cpu = samp_cpuid;
if (!xen_hyper_fill_elf_notes(xhdit->context_array[samp_cpuid].note,
buf, XEN_HYPER_ELF_NOTE_FILL_T_NOTE)) {
error(FATAL, "cannot read crash_notes.\n");
}
bp = buf;
/* Get elf format information for each version. */
switch (xhdit->note_ver) {
case XEN_HYPER_ELF_NOTE_V1:
/* core data */
note = (Elf32_Nhdr *)bp;
np = bp + sizeof(Elf32_Nhdr);
upp = np + note->n_namesz;
upp = (char *)roundup((ulong)upp, 4);
xhdit->core_offset = (Elf_Word)((ulong)upp - (ulong)note);
note = (Elf32_Nhdr *)(upp + note->n_descsz);
/* cr3 data */
np = (char *)note + sizeof(Elf32_Nhdr);
upp = np + note->n_namesz;
upp = (char *)roundup((ulong)upp, 4);
upp = upp + note->n_descsz;
xhdit->core_size = upp - bp;
break;
case XEN_HYPER_ELF_NOTE_V2:
/* core data */
xhdit->core_offset = XEN_HYPER_OFFSET(crash_note_core_t_desc);
xhdit->core_size = XEN_HYPER_SIZE(crash_note_core_t);
/* xen core */
xhdit->xen_info_offset = XEN_HYPER_OFFSET(crash_note_xen_t_desc);
xhdit->xen_info_size = XEN_HYPER_SIZE(crash_note_xen_t);
break;
case XEN_HYPER_ELF_NOTE_V3:
/* core data */
xhdit->core_offset = XEN_HYPER_OFFSET(crash_note_core_t_desc);
xhdit->core_size = XEN_HYPER_SIZE(crash_note_core_t);
/* xen core */
xhdit->xen_core_offset = XEN_HYPER_OFFSET(crash_note_xen_core_t_desc);
xhdit->xen_core_size = XEN_HYPER_SIZE(crash_note_xen_core_t);
/* xen info */
xhdit->xen_info_offset = XEN_HYPER_OFFSET(crash_note_xen_info_t_desc);
xhdit->xen_info_size = XEN_HYPER_SIZE(crash_note_xen_info_t);
break;
case XEN_HYPER_ELF_NOTE_V4:
/* core data */
note = (Elf32_Nhdr *)bp;
np = bp + sizeof(Elf32_Nhdr);
upp = np + note->n_namesz;
upp = (char *)roundup((ulong)upp, 4);
xhdit->core_offset = (Elf_Word)((ulong)upp - (ulong)note);
upp = upp + note->n_descsz;
xhdit->core_size = (Elf_Word)((ulong)upp - (ulong)note);
if (XEN_HYPER_ELF_NOTE_V4_NOTE_SIZE < xhdit->core_size + 32) {
error(WARNING, "note size is assumed on crash is incorrect.(core data)\n");
return;
}
/* xen core */
note = (Elf32_Nhdr *)upp;
np = (char *)note + sizeof(Elf32_Nhdr);
upp = np + note->n_namesz;
upp = (char *)roundup((ulong)upp, 4);
xhdit->xen_core_offset = (Elf_Word)((ulong)upp - (ulong)note);
upp = upp + note->n_descsz;
xhdit->xen_core_size = (Elf_Word)((ulong)upp - (ulong)note);
if (XEN_HYPER_ELF_NOTE_V4_NOTE_SIZE <
xhdit->core_size + xhdit->xen_core_size + 32) {
error(WARNING, "note size is assumed on crash is incorrect.(xen core)\n");
return;
}
/* xen info */
note = (Elf32_Nhdr *)upp;
np = (char *)note + sizeof(Elf32_Nhdr);
upp = np + note->n_namesz;
upp = (char *)roundup((ulong)upp, 4);
xhdit->xen_info_offset = (Elf_Word)((ulong)upp - (ulong)note);
upp = upp + note->n_descsz;
xhdit->xen_info_size = (Elf_Word)((ulong)upp - (ulong)note);
if (XEN_HYPER_ELF_NOTE_V4_NOTE_SIZE <
xhdit->core_size + xhdit->xen_core_size + xhdit->xen_info_size) {
error(WARNING, "note size is assumed on crash is incorrect.(xen info)\n");
return;
}
xhdit->note_size = xhdit->core_size + xhdit->xen_core_size + xhdit->xen_info_size;
break;
default:
error(FATAL, "logic error in cheking elf note format occurs.\n");
}
/* fill xen info context. */
if (xhdit->note_ver >= XEN_HYPER_ELF_NOTE_V3) {
if((xhdit->crash_note_xen_info_ptr =
malloc(xhdit->xen_info_size)) == NULL) {
error(FATAL, "cannot malloc dumpinfo table "
"crash_note_xen_info_ptr space.\n");
}
memcpy(xhdit->crash_note_xen_info_ptr,
bp + xhdit->core_size + xhdit->xen_core_size,
xhdit->xen_info_size);
xhdit->context_xen_info.note =
xhdit->context_array[samp_cpuid].note +
xhdit->core_size + xhdit->xen_core_size;
xhdit->context_xen_info.pcpu_id = samp_cpuid;
xhdit->context_xen_info.crash_xen_info_ptr =
xhdit->crash_note_xen_info_ptr + xhdit->xen_info_offset;
}
/* allocate note core */
size = xhdit->core_size * XEN_HYPER_NR_PCPUS();
if(!(xhdit->crash_note_core_array = malloc(size))) {
error(FATAL, "cannot malloc crash_note_core_array space.\n");
}
nccp = xhdit->crash_note_core_array;
BZERO(nccp, size);
xccp = NULL;
/* allocate xen core */
if (xhdit->note_ver >= XEN_HYPER_ELF_NOTE_V2) {
size = xhdit->xen_core_size * XEN_HYPER_NR_PCPUS();
if(!(xhdit->crash_note_xen_core_array = malloc(size))) {
error(FATAL, "cannot malloc dumpinfo table "
"crash_note_xen_core_array space.\n");
}
xccp = xhdit->crash_note_xen_core_array;
BZERO(xccp, size);
}
/* fill a context. */
for_cpu_indexes(i, cpuid)
{
/* fill core context. */
addr = xhdit->context_array[cpuid].note;
if (!xen_hyper_fill_elf_notes(addr, nccp,
XEN_HYPER_ELF_NOTE_FILL_T_CORE)) {
error(FATAL, "cannot read elf note core.\n");
}
xhdit->context_array[cpuid].pcpu_id = cpuid;
xhdit->context_array[cpuid].ELF_Prstatus_ptr =
nccp + xhdit->core_offset;
xhdit->context_array[cpuid].pr_reg_ptr =
nccp + xhdit->core_offset +
XEN_HYPER_OFFSET(ELF_Prstatus_pr_reg);
/* Is there xen core data? */
if (xhdit->note_ver < XEN_HYPER_ELF_NOTE_V2) {
nccp += xhdit->core_size;
continue;
}
if (xhdit->note_ver == XEN_HYPER_ELF_NOTE_V2 &&
cpuid != samp_cpuid) {
xccp += xhdit->xen_core_size;
nccp += xhdit->core_size;
continue;
}
/* fill xen core context, in case of more elf note V2. */
xhdit->context_xen_core_array[cpuid].note =
xhdit->context_array[cpuid].note +
xhdit->core_size;
xhdit->context_xen_core_array[cpuid].pcpu_id = cpuid;
xhdit->context_xen_core_array[cpuid].crash_xen_core_ptr =
xccp + xhdit->xen_core_offset;
if (!xen_hyper_fill_elf_notes(xhdit->context_xen_core_array[cpuid].note,
xccp, XEN_HYPER_ELF_NOTE_FILL_T_XEN_CORE)) {
error(FATAL, "cannot read elf note xen core.\n");
}
xccp += xhdit->xen_core_size;
nccp += xhdit->core_size;
}
FREEBUF(buf);
}
/*
* Get dump information context from physical cpu id.
*/
struct xen_hyper_dumpinfo_context *
xen_hyper_id_to_dumpinfo_context(uint id)
{
if (!xen_hyper_test_pcpu_id(id))
return NULL;
return &xhdit->context_array[id];
}
/*
* Get dump information context from ELF Note address.
*/
struct xen_hyper_dumpinfo_context *
xen_hyper_note_to_dumpinfo_context(ulong note)
{
int i;
for (i = 0; i < XEN_HYPER_MAX_CPUS(); i++) {
if (note == xhdit->context_array[i].note) {
return &xhdit->context_array[i];
}
}
return NULL;
}
/*
* Fill ELF Notes header here.
* This assume that variable note has a top address of an area for
* specified type.
*/
char *
xen_hyper_fill_elf_notes(ulong note, char *note_buf, int type)
{
long size;
ulong rp = note;
if (type == XEN_HYPER_ELF_NOTE_FILL_T_NOTE)
size = xhdit->note_size;
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_CORE)
size = xhdit->core_size;
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_XEN_CORE)
size = xhdit->xen_core_size;
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_XEN_CORE_M)
size = xhdit->core_size + xhdit->xen_core_size;
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_PRS)
size = XEN_HYPER_SIZE(ELF_Prstatus);
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_XEN_REGS)
size = XEN_HYPER_SIZE(xen_crash_xen_regs_t);
else
return NULL;
if (!readmem(rp, KVADDR, note_buf, size,
"note_buf_t or crash_note_t", RETURN_ON_ERROR)) {
if (type == XEN_HYPER_ELF_NOTE_FILL_T_NOTE)
error(WARNING, "cannot fill note_buf_t or crash_note_t.\n");
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_CORE)
error(WARNING, "cannot fill note core.\n");
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_XEN_CORE)
error(WARNING, "cannot fill note xen core.\n");
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_XEN_CORE_M)
error(WARNING, "cannot fill note core & xen core.\n");
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_PRS)
error(WARNING, "cannot fill ELF_Prstatus.\n");
else if (type == XEN_HYPER_ELF_NOTE_FILL_T_XEN_REGS)
error(WARNING, "cannot fill xen_crash_xen_regs_t.\n");
return NULL;
}
return note_buf;
}
/*
* Get domain status.
*/
ulong
xen_hyper_domain_state(struct xen_hyper_domain_context *dc)
{
if (ACTIVE()) {
if (xen_hyper_read_domain_verify(dc->domain) == NULL) {
return XEN_HYPER_DOMF_ERROR;
}
}
return dc->domain_flags;
}
/*
* Allocate domain context space.
*/
void
xen_hyper_refresh_domain_context_space(void)
{
char *domain_struct;
ulong domain, next, dom_xen, dom_io, idle_vcpu;
struct xen_hyper_domain_context *dc;
struct xen_hyper_domain_context *dom0;
int i;
if ((xhdt->flags & XEN_HYPER_DOMAIN_F_INIT) && !ACTIVE()) {
return;
}
XEN_HYPER_RUNNING_DOMAINS() = XEN_HYPER_NR_DOMAINS() =
xen_hyper_get_domains();
xen_hyper_alloc_domain_context_space(XEN_HYPER_NR_DOMAINS());