b9e5dc8d45
On some cpus the overhead for virtualization instructions is in the same range as a system call. Having to call multiple ioctls to get set registers will make certain userspace handled exits more expensive than necessary. Lets provide a section in kvm_run that works as a shared save area for guest registers. We also provide two 64bit flags fields (architecture specific), that will specify 1. which parts of these fields are valid. 2. which registers were modified by userspace Each bit for these flag fields will define a group of registers (like general purpose) or a single register. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
268 lines
6.1 KiB
C
268 lines
6.1 KiB
C
#ifndef __ASM_IA64_KVM_H
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#define __ASM_IA64_KVM_H
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/*
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* kvm structure definitions for ia64
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*
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* Copyright (C) 2007 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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*/
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#include <linux/types.h>
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#include <linux/ioctl.h>
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/* Select x86 specific features in <linux/kvm.h> */
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#define __KVM_HAVE_IOAPIC
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#define __KVM_HAVE_DEVICE_ASSIGNMENT
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/* Architectural interrupt line count. */
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#define KVM_NR_INTERRUPTS 256
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#define KVM_IOAPIC_NUM_PINS 48
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struct kvm_ioapic_state {
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__u64 base_address;
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__u32 ioregsel;
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__u32 id;
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__u32 irr;
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__u32 pad;
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union {
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__u64 bits;
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struct {
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__u8 vector;
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__u8 delivery_mode:3;
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__u8 dest_mode:1;
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__u8 delivery_status:1;
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__u8 polarity:1;
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__u8 remote_irr:1;
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__u8 trig_mode:1;
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__u8 mask:1;
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__u8 reserve:7;
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__u8 reserved[4];
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__u8 dest_id;
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} fields;
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} redirtbl[KVM_IOAPIC_NUM_PINS];
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};
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#define KVM_IRQCHIP_PIC_MASTER 0
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#define KVM_IRQCHIP_PIC_SLAVE 1
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#define KVM_IRQCHIP_IOAPIC 2
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#define KVM_NR_IRQCHIPS 3
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#define KVM_CONTEXT_SIZE 8*1024
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struct kvm_fpreg {
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union {
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unsigned long bits[2];
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long double __dummy; /* force 16-byte alignment */
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} u;
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};
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union context {
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/* 8K size */
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char dummy[KVM_CONTEXT_SIZE];
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struct {
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unsigned long psr;
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unsigned long pr;
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unsigned long caller_unat;
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unsigned long pad;
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unsigned long gr[32];
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unsigned long ar[128];
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unsigned long br[8];
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unsigned long cr[128];
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unsigned long rr[8];
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unsigned long ibr[8];
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unsigned long dbr[8];
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unsigned long pkr[8];
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struct kvm_fpreg fr[128];
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};
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};
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struct thash_data {
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union {
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struct {
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unsigned long p : 1; /* 0 */
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unsigned long rv1 : 1; /* 1 */
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unsigned long ma : 3; /* 2-4 */
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unsigned long a : 1; /* 5 */
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unsigned long d : 1; /* 6 */
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unsigned long pl : 2; /* 7-8 */
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unsigned long ar : 3; /* 9-11 */
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unsigned long ppn : 38; /* 12-49 */
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unsigned long rv2 : 2; /* 50-51 */
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unsigned long ed : 1; /* 52 */
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unsigned long ig1 : 11; /* 53-63 */
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};
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struct {
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unsigned long __rv1 : 53; /* 0-52 */
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unsigned long contiguous : 1; /*53 */
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unsigned long tc : 1; /* 54 TR or TC */
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unsigned long cl : 1;
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/* 55 I side or D side cache line */
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unsigned long len : 4; /* 56-59 */
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unsigned long io : 1; /* 60 entry is for io or not */
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unsigned long nomap : 1;
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/* 61 entry cann't be inserted into machine TLB.*/
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unsigned long checked : 1;
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/* 62 for VTLB/VHPT sanity check */
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unsigned long invalid : 1;
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/* 63 invalid entry */
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};
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unsigned long page_flags;
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}; /* same for VHPT and TLB */
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union {
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struct {
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unsigned long rv3 : 2;
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unsigned long ps : 6;
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unsigned long key : 24;
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unsigned long rv4 : 32;
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};
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unsigned long itir;
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};
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union {
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struct {
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unsigned long ig2 : 12;
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unsigned long vpn : 49;
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unsigned long vrn : 3;
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};
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unsigned long ifa;
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unsigned long vadr;
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struct {
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unsigned long tag : 63;
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unsigned long ti : 1;
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};
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unsigned long etag;
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};
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union {
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struct thash_data *next;
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unsigned long rid;
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unsigned long gpaddr;
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};
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};
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#define NITRS 8
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#define NDTRS 8
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struct saved_vpd {
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unsigned long vhpi;
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unsigned long vgr[16];
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unsigned long vbgr[16];
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unsigned long vnat;
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unsigned long vbnat;
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unsigned long vcpuid[5];
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unsigned long vpsr;
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unsigned long vpr;
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union {
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unsigned long vcr[128];
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struct {
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unsigned long dcr;
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unsigned long itm;
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unsigned long iva;
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unsigned long rsv1[5];
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unsigned long pta;
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unsigned long rsv2[7];
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unsigned long ipsr;
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unsigned long isr;
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unsigned long rsv3;
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unsigned long iip;
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unsigned long ifa;
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unsigned long itir;
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unsigned long iipa;
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unsigned long ifs;
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unsigned long iim;
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unsigned long iha;
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unsigned long rsv4[38];
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unsigned long lid;
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unsigned long ivr;
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unsigned long tpr;
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unsigned long eoi;
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unsigned long irr[4];
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unsigned long itv;
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unsigned long pmv;
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unsigned long cmcv;
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unsigned long rsv5[5];
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unsigned long lrr0;
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unsigned long lrr1;
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unsigned long rsv6[46];
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};
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};
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};
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struct kvm_regs {
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struct saved_vpd vpd;
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/*Arch-regs*/
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int mp_state;
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unsigned long vmm_rr;
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/* TR and TC. */
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struct thash_data itrs[NITRS];
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struct thash_data dtrs[NDTRS];
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/* Bit is set if there is a tr/tc for the region. */
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unsigned char itr_regions;
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unsigned char dtr_regions;
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unsigned char tc_regions;
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char irq_check;
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unsigned long saved_itc;
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unsigned long itc_check;
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unsigned long timer_check;
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unsigned long timer_pending;
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unsigned long last_itc;
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unsigned long vrr[8];
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unsigned long ibr[8];
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unsigned long dbr[8];
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unsigned long insvc[4]; /* Interrupt in service. */
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unsigned long xtp;
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unsigned long metaphysical_rr0; /* from kvm_arch (so is pinned) */
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unsigned long metaphysical_rr4; /* from kvm_arch (so is pinned) */
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unsigned long metaphysical_saved_rr0; /* from kvm_arch */
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unsigned long metaphysical_saved_rr4; /* from kvm_arch */
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unsigned long fp_psr; /*used for lazy float register */
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unsigned long saved_gp;
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/*for phycial emulation */
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union context saved_guest;
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unsigned long reserved[64]; /* for future use */
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};
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struct kvm_sregs {
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};
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struct kvm_fpu {
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};
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#define KVM_IA64_VCPU_STACK_SHIFT 16
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#define KVM_IA64_VCPU_STACK_SIZE (1UL << KVM_IA64_VCPU_STACK_SHIFT)
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struct kvm_ia64_vcpu_stack {
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unsigned char stack[KVM_IA64_VCPU_STACK_SIZE];
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};
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struct kvm_debug_exit_arch {
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};
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/* for KVM_SET_GUEST_DEBUG */
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struct kvm_guest_debug_arch {
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};
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/* definition of registers in kvm_run */
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struct kvm_sync_regs {
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};
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#endif
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