mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-10 15:10:38 +00:00
2a342ed577
To communicate with KVM directly we need to plumb some sort of interface between the guest and KVM. Usually those interfaces use hypercalls. This hypercall implementation is described in the last patch of the series in a special documentation file. Please read that for further information. This patch implements stubs to handle KVM PPC hypercalls on the host and guest side alike. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
43 lines
886 B
C
43 lines
886 B
C
#ifndef __LINUX_KVM_PARA_H
|
|
#define __LINUX_KVM_PARA_H
|
|
|
|
/*
|
|
* This header file provides a method for making a hypercall to the host
|
|
* Architectures should define:
|
|
* - kvm_hypercall0, kvm_hypercall1...
|
|
* - kvm_arch_para_features
|
|
* - kvm_para_available
|
|
*/
|
|
|
|
/* Return values for hypercalls */
|
|
#define KVM_ENOSYS 1000
|
|
#define KVM_EFAULT EFAULT
|
|
#define KVM_E2BIG E2BIG
|
|
#define KVM_EPERM EPERM
|
|
|
|
#define KVM_HC_VAPIC_POLL_IRQ 1
|
|
#define KVM_HC_MMU_OP 2
|
|
#define KVM_HC_FEATURES 3
|
|
|
|
/*
|
|
* hypercalls use architecture specific
|
|
*/
|
|
#include <asm/kvm_para.h>
|
|
|
|
#ifdef __KERNEL__
|
|
#ifdef CONFIG_KVM_GUEST
|
|
void __init kvm_guest_init(void);
|
|
#else
|
|
#define kvm_guest_init() do { } while (0)
|
|
#endif
|
|
|
|
static inline int kvm_para_has_feature(unsigned int feature)
|
|
{
|
|
if (kvm_arch_para_features() & (1UL << feature))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __LINUX_KVM_PARA_H */
|
|
|