9f7d5bb5e2
Since vmm runs in an isolated address space and it is just a copy of host's kvm-intel module, so once vmm crashes, we just crash all guests running on it instead of crashing whole kernel. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/*
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* vmm.c: vmm module interface with kvm module
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*
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* Copyright (c) 2007, Intel Corporation.
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*
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* Xiantao Zhang (xiantao.zhang@intel.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*/
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#include<linux/kernel.h>
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#include<linux/module.h>
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#include<asm/fpswa.h>
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#include "vcpu.h"
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MODULE_AUTHOR("Intel");
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MODULE_LICENSE("GPL");
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extern char kvm_ia64_ivt;
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extern fpswa_interface_t *vmm_fpswa_interface;
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long vmm_sanity = 1;
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struct kvm_vmm_info vmm_info = {
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.module = THIS_MODULE,
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.vmm_entry = vmm_entry,
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.tramp_entry = vmm_trampoline,
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.vmm_ivt = (unsigned long)&kvm_ia64_ivt,
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};
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static int __init kvm_vmm_init(void)
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{
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vmm_fpswa_interface = fpswa_interface;
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/*Register vmm data to kvm side*/
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return kvm_init(&vmm_info, 1024, THIS_MODULE);
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}
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static void __exit kvm_vmm_exit(void)
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{
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kvm_exit();
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return ;
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}
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void vmm_spin_lock(spinlock_t *lock)
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{
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_vmm_raw_spin_lock(lock);
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}
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void vmm_spin_unlock(spinlock_t *lock)
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{
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_vmm_raw_spin_unlock(lock);
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}
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static void vcpu_debug_exit(struct kvm_vcpu *vcpu)
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{
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struct exit_ctl_data *p = &vcpu->arch.exit_data;
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long psr;
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local_irq_save(psr);
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p->exit_reason = EXIT_REASON_DEBUG;
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vmm_transition(vcpu);
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local_irq_restore(psr);
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}
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asmlinkage int printk(const char *fmt, ...)
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{
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struct kvm_vcpu *vcpu = current_vcpu;
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va_list args;
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int r;
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memset(vcpu->arch.log_buf, 0, VMM_LOG_LEN);
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va_start(args, fmt);
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r = vsnprintf(vcpu->arch.log_buf, VMM_LOG_LEN, fmt, args);
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va_end(args);
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vcpu_debug_exit(vcpu);
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return r;
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}
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module_init(kvm_vmm_init)
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module_exit(kvm_vmm_exit)
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