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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * 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 <[email protected]> */ #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 0x4b564d21 /* "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__ */