arch/ia64/kvm/vmm.c

   1 /*
   2  * vmm.c: vmm module interface with kvm module
   3  *
   4  * Copyright (c) 2007, Intel Corporation.
   5  *
   6  *  Xiantao Zhang (xiantao.zhang@intel.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms and conditions of the GNU General Public License,
  10  * version 2, as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  19  * Place - Suite 330, Boston, MA 02111-1307 USA.
  20  */
  21
  22
  23 #include<linux/kernel.h>
  24 #include<linux/module.h>
  25 #include<asm/fpswa.h>
  26
  27 #include "vcpu.h"
  28
  29 MODULE_AUTHOR("Intel");
  30 MODULE_LICENSE("GPL");
  31
  32 extern char kvm_ia64_ivt;
  33 extern fpswa_interface_t *vmm_fpswa_interface;
  34
  35 long vmm_sanity = 1;
  36
  37 struct kvm_vmm_info vmm_info = {
  38         .module      = THIS_MODULE,
  39         .vmm_entry   = vmm_entry,
  40         .tramp_entry = vmm_trampoline,
  41         .vmm_ivt     = (unsigned long)&kvm_ia64_ivt,
  42 };
  43
  44 static int __init  kvm_vmm_init(void)
  45 {
  46
  47         vmm_fpswa_interface = fpswa_interface;
  48
  49         /*Register vmm data to kvm side*/
  50         return kvm_init(&vmm_info, 1024, THIS_MODULE);
  51 }
  52
  53 static void __exit kvm_vmm_exit(void)
  54 {
  55         kvm_exit();
  56         return ;
  57 }
  58
  59 void vmm_spin_lock(spinlock_t *lock)
  60 {
  61         _vmm_raw_spin_lock(lock);
  62 }
  63
  64 void vmm_spin_unlock(spinlock_t *lock)
  65 {
  66         _vmm_raw_spin_unlock(lock);
  67 }
  68
  69 static void vcpu_debug_exit(struct kvm_vcpu *vcpu)
  70 {
  71         struct exit_ctl_data *p = &vcpu->arch.exit_data;
  72         long psr;
  73
  74         local_irq_save(psr);
  75         p->exit_reason = EXIT_REASON_DEBUG;
  76         vmm_transition(vcpu);
  77         local_irq_restore(psr);
  78 }
  79
  80 asmlinkage int printk(const char *fmt, ...)
  81 {
  82         struct kvm_vcpu *vcpu = current_vcpu;
  83         va_list args;
  84         int r;
  85
  86         memset(vcpu->arch.log_buf, 0, VMM_LOG_LEN);
  87         va_start(args, fmt);
  88         r = vsnprintf(vcpu->arch.log_buf, VMM_LOG_LEN, fmt, args);
  89         va_end(args);
  90         vcpu_debug_exit(vcpu);
  91         return r;
  92 }
  93
  94 module_init(kvm_vmm_init)
  95 module_exit(kvm_vmm_exit)