xref: /OK3568_Linux_fs/kernel/arch/mips/kvm/commpage.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * This file is subject to the terms and conditions of the GNU General Public
3*4882a593Smuzhiyun  * License.  See the file "COPYING" in the main directory of this archive
4*4882a593Smuzhiyun  * for more details.
5*4882a593Smuzhiyun  *
6*4882a593Smuzhiyun  * commpage, currently used for Virtual COP0 registers.
7*4882a593Smuzhiyun  * Mapped into the guest kernel @ KVM_GUEST_COMMPAGE_ADDR.
8*4882a593Smuzhiyun  *
9*4882a593Smuzhiyun  * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
10*4882a593Smuzhiyun  * Authors: Sanjay Lal <sanjayl@kymasys.com>
11*4882a593Smuzhiyun  */
12*4882a593Smuzhiyun 
13*4882a593Smuzhiyun #include <linux/errno.h>
14*4882a593Smuzhiyun #include <linux/err.h>
15*4882a593Smuzhiyun #include <linux/vmalloc.h>
16*4882a593Smuzhiyun #include <linux/fs.h>
17*4882a593Smuzhiyun #include <linux/memblock.h>
18*4882a593Smuzhiyun #include <asm/page.h>
19*4882a593Smuzhiyun #include <asm/cacheflush.h>
20*4882a593Smuzhiyun #include <asm/mmu_context.h>
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun #include <linux/kvm_host.h>
23*4882a593Smuzhiyun 
24*4882a593Smuzhiyun #include "commpage.h"
25*4882a593Smuzhiyun 
kvm_mips_commpage_init(struct kvm_vcpu * vcpu)26*4882a593Smuzhiyun void kvm_mips_commpage_init(struct kvm_vcpu *vcpu)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun 	struct kvm_mips_commpage *page = vcpu->arch.kseg0_commpage;
29*4882a593Smuzhiyun 
30*4882a593Smuzhiyun 	/* Specific init values for fields */
31*4882a593Smuzhiyun 	vcpu->arch.cop0 = &page->cop0;
32*4882a593Smuzhiyun }
33