de7906c36c
The SRR0 and SRR1 registers contain cached values of the PC and MSR respectively. They get written to by the hypervisor when an interrupt occurs or directly by the kernel. They are also used to tell the rfi(d) instruction where to jump to. Because it only gets touched on defined events that, it's very simple to share with the guest. Hypervisor and guest both have full r/w access. This patch converts all users of the current field to the shared page. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* Copyright IBM Corp. 2008
|
|
*
|
|
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
|
|
*/
|
|
|
|
#ifndef __POWERPC_KVM_PARA_H__
|
|
#define __POWERPC_KVM_PARA_H__
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct kvm_vcpu_arch_shared {
|
|
__u64 srr0;
|
|
__u64 srr1;
|
|
__u64 dar;
|
|
__u64 msr;
|
|
__u32 dsisr;
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
static inline int kvm_para_available(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned int kvm_arch_para_features(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __POWERPC_KVM_PARA_H__ */
|