arch/mips/kvm/commpage.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * commpage, currently used for Virtual COP0 registers.
   7  * Mapped into the guest kernel @ KVM_GUEST_COMMPAGE_ADDR.
   8  *
   9  * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
  10  * Authors: Sanjay Lal <sanjayl@kymasys.com>
  11  */
  12
  13 #include <linux/errno.h>
  14 #include <linux/err.h>
  15 #include <linux/vmalloc.h>
  16 #include <linux/fs.h>
  17 #include <linux/bootmem.h>
  18 #include <asm/page.h>
  19 #include <asm/cacheflush.h>
  20 #include <asm/mmu_context.h>
  21
  22 #include <linux/kvm_host.h>
  23
  24 #include "commpage.h"
  25
  26 void kvm_mips_commpage_init(struct kvm_vcpu *vcpu)
  27 {
  28         struct kvm_mips_commpage *page = vcpu->arch.kseg0_commpage;
  29
  30         /* Specific init values for fields */
  31         vcpu->arch.cop0 = &page->cop0;
  32 }