/******************************************************************************
* arch/x86/traps.c
*
* Modifications to Linux original are copyright (c) 2002-2004, K A Fraser
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* Pentium III FXSR, SSE support
* Gareth Hughes <gareth@valinux.com>, May 2000
*/
#include <xen/config.h>
#include <xen/init.h>
#include <xen/sched.h>
#include <xen/lib.h>
#include <xen/errno.h>
#include <xen/mm.h>
#include <xen/console.h>
#include <xen/shutdown.h>
#include <xen/guest_access.h>
#include <asm/regs.h>
#include <xen/delay.h>
#include <xen/event.h>
#include <xen/spinlock.h>
#include <xen/irq.h>
#include <xen/perfc.h>
#include <xen/softirq.h>
#include <xen/domain_page.h>
#include <xen/symbols.h>
#include <xen/iocap.h>
#include <xen/nmi.h>
#include <xen/version.h>
#include <xen/kexec.h>
#include <xen/trace.h>
#include <xen/paging.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/atomic.h>
#include <asm/bitops.h>
#include <asm/desc.h>
#include <asm/debugreg.h>
#include <asm/smp.h>
#include <asm/flushtlb.h>
#include <asm/uaccess.h>
#include <asm/i387.h>
#include <asm/xstate.h>
#include <asm/debugger.h>
#include <asm/msr.h>
#include <asm/shared.h>
#include <asm/x86_emulate.h>
#include <asm/traps.h>
#include <asm/hvm/vpt.h>
#include <asm/hypercall.h>
#include <asm/mce.h>
#include <asm/apic.h>
#include <asm/mc146818rtc.h>
#include <asm/hpet.h>
#include <public/arch-x86/cpuid.h>
/*
* opt_nmi: one of 'ignore', 'dom0', or 'fatal'.
* fatal: Xen prints diagnostic message and then hangs.
* dom0: The NMI is virtualised to DOM0.
* ignore: The NMI error is cleared and ignored.
*/
#ifdef NDEBUG
static char __read_mostly opt_nmi[10] = "dom0";
#else
static char __read_mostly opt_nmi[10] = "fatal";
#endif
string_param("nmi", opt_nmi);
DEFINE_PER_CPU(u64, efer);
DEFINE_PER_CPU_READ_MOSTLY(u32, ler_msr);
DEFINE_PER_CPU_READ_MOSTLY(struct desc_struct *, gdt_table);
#ifdef CONFIG_COMPAT
DEFINE_PER_CPU_READ_MOSTLY(struct desc_struct *, compat_gdt_table);
#endif
/* Master table, used by CPU0. */
idt_entry_t idt_table[IDT_ENTRIES];
/* Pointer to the IDT of every CPU. */
idt_entry_t *idt_tables[NR_CPUS] __read_mostly;
void (*ioemul_handle_quirk)(
u8 opcode, char *io_emul_stub, struct cpu_user_regs *regs);
static int debug_stack_lines = 20;
integer_param("debug_stack_lines", debug_stack_lines);
static bool_t __devinitdata opt_ler;
boolean_param("ler", opt_ler);
#ifdef CONFIG_X86_32
#define stack_words_per_line 8
#define ESP_BEFORE_EXCEPTION(regs) ((unsigned long *)®s->esp)
#else
#define stack_words_per_line 4
#define ESP_BEFORE_EXCEPTION(regs) ((unsigned long *)regs->rsp)
#endif
static void show_guest_stack(struct vcpu *v, struct cpu_user_regs *regs)
{
