/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Copyright IBM Corp . 2008
*
* Authors : Hollis Blanchard < hollisb @ us . ibm . com >
*/
#ifndef _UAPI__POWERPC_KVM_PARA_H__
#define _UAPI__POWERPC_KVM_PARA_H__
#include <linux/types.h>
/*
* Additions to this struct must only occur at the end , and should be
* accompanied by a KVM_MAGIC_FEAT flag to advertise that they are present
* ( albeit not necessarily relevant to the current target hardware platform ) .
*
* Struct fields are always 32 or 64 bit aligned , depending on them being 32
* or 64 bit wide respectively .
*
* See Documentation / virt / kvm / ppc - pv . rst
*/
struct kvm_vcpu_arch_shared {
__u64 scratch1;
__u64 scratch2;
__u64 scratch3;
__u64 critical; /* Guest may not get interrupts if == r1 */
__u64 sprg0;
__u64 sprg1;
__u64 sprg2;
__u64 sprg3;
__u64 srr0;
__u64 srr1;
__u64 dar; /* dear on BookE */
__u64 msr;
__u32 dsisr;
__u32 int_pending; /* Tells the guest if we have an interrupt */
__u32 sr[16 ];
__u32 mas0;
__u32 mas1;
__u64 mas7_3;
__u64 mas2;
__u32 mas4;
__u32 mas6;
__u32 esr;
__u32 pir;
/*
* SPRG4 - 7 are user - readable , so we can only keep these consistent
* between the shared area and the real registers when there ' s an
* intervening exit to KVM . This also applies to SPRG3 on some
* chips .
*
* This suffices for access by guest userspace , since in PR - mode
* KVM , an exit must occur when changing the guest ' s MSR [ PR ] .
* If the guest kernel writes to SPRG3 - 7 via the shared area , it
* must also use the shared area for reading while in kernel space .
*/
__u64 sprg4;
__u64 sprg5;
__u64 sprg6;
__u64 sprg7;
};
#define KVM_SC_MAGIC_R0 0 x4b564d21 /* "KVM!" */
#define KVM_HCALL_TOKEN(num) _EV_HCALL_TOKEN(EV_KVM_VENDOR_ID, num)
#include <asm /epapr_hcalls.h>
#define KVM_FEATURE_MAGIC_PAGE 1
/* Magic page flags from host to guest */
#define KVM_MAGIC_FEAT_SR (1 << 0 )
/* MASn, ESR, PIR, and high SPRGs */
#define KVM_MAGIC_FEAT_MAS0_TO_SPRG7 (1 << 1 )
/* Magic page flags from guest to host */
#define MAGIC_PAGE_FLAG_NOT_MAPPED_NX (1 << 0 )
#endif /* _UAPI__POWERPC_KVM_PARA_H__ */
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