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This patch contains the port of Qumranet's kvm kernel module to IBM zSeries (aka s390x, mainframe) architecture. It uses the mainframe's virtualization instruction SIE to run virtual machines with up to 64 virtual CPUs each. This port is only usable on 64bit host kernels, and can only run 64bit guest kernels. However, running 31bit applications in guest userspace is possible. The following source files are introduced by this patch arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all arch callbacks for kvm. __vcpu_run calls back into sie64a to enter the guest machine context arch/s390/kvm/sie64a.S assembler function sie64a, which enters guest context via SIE, and switches world before and after that include/asm-s390/kvm_host.h contains all vital data structures needed to run virtual machines on the mainframe include/asm-s390/kvm.h defines kvm_regs and friends for user access to guest register content arch/s390/kvm/gaccess.h functions similar to uaccess to access guest memory arch/s390/kvm/kvm-s390.h header file for kvm-s390 internals, extended by later patches Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
46 lines
956 B
C
46 lines
956 B
C
#ifndef __LINUX_KVM_S390_H
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#define __LINUX_KVM_S390_H
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/*
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* asm-s390/kvm.h - KVM s390 specific structures and definitions
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*
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* Copyright IBM Corp. 2008
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (version 2 only)
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* as published by the Free Software Foundation.
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*
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Christian Borntraeger <borntraeger@de.ibm.com>
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*/
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#include <asm/types.h>
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/* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
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struct kvm_pic_state {
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/* no PIC for s390 */
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};
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struct kvm_ioapic_state {
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/* no IOAPIC for s390 */
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};
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/* for KVM_GET_REGS and KVM_SET_REGS */
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struct kvm_regs {
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/* general purpose regs for s390 */
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__u64 gprs[16];
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};
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/* for KVM_GET_SREGS and KVM_SET_SREGS */
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struct kvm_sregs {
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__u32 acrs[16];
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__u64 crs[16];
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};
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/* for KVM_GET_FPU and KVM_SET_FPU */
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struct kvm_fpu {
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__u32 fpc;
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__u64 fprs[16];
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};
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#endif
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