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98 lines
2.7 KiB
98 lines
2.7 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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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, as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* |
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* Copyright IBM Corp. 2008 |
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* |
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* Authors: Hollis Blanchard <[email protected]> |
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*/ |
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#ifndef _UAPI__POWERPC_KVM_PARA_H__ |
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#define _UAPI__POWERPC_KVM_PARA_H__ |
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#include <linux/types.h> |
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/* |
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* Additions to this struct must only occur at the end, and should be |
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* accompanied by a KVM_MAGIC_FEAT flag to advertise that they are present |
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* (albeit not necessarily relevant to the current target hardware platform). |
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* |
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* Struct fields are always 32 or 64 bit aligned, depending on them being 32 |
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* or 64 bit wide respectively. |
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* |
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* See Documentation/virt/kvm/ppc-pv.rst |
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*/ |
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struct kvm_vcpu_arch_shared { |
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__u64 scratch1; |
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__u64 scratch2; |
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__u64 scratch3; |
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__u64 critical; /* Guest may not get interrupts if == r1 */ |
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__u64 sprg0; |
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__u64 sprg1; |
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__u64 sprg2; |
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__u64 sprg3; |
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__u64 srr0; |
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__u64 srr1; |
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__u64 dar; /* dear on BookE */ |
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__u64 msr; |
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__u32 dsisr; |
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__u32 int_pending; /* Tells the guest if we have an interrupt */ |
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__u32 sr[16]; |
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__u32 mas0; |
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__u32 mas1; |
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__u64 mas7_3; |
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__u64 mas2; |
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__u32 mas4; |
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__u32 mas6; |
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__u32 esr; |
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__u32 pir; |
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/* |
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* SPRG4-7 are user-readable, so we can only keep these consistent |
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* between the shared area and the real registers when there's an |
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* intervening exit to KVM. This also applies to SPRG3 on some |
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* chips. |
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* |
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* This suffices for access by guest userspace, since in PR-mode |
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* KVM, an exit must occur when changing the guest's MSR[PR]. |
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* If the guest kernel writes to SPRG3-7 via the shared area, it |
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* must also use the shared area for reading while in kernel space. |
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*/ |
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__u64 sprg4; |
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__u64 sprg5; |
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__u64 sprg6; |
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__u64 sprg7; |
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}; |
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#define KVM_SC_MAGIC_R0 0x4b564d21 /* "KVM!" */ |
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#define KVM_HCALL_TOKEN(num) _EV_HCALL_TOKEN(EV_KVM_VENDOR_ID, num) |
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#include <asm/epapr_hcalls.h> |
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#define KVM_FEATURE_MAGIC_PAGE 1 |
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/* Magic page flags from host to guest */ |
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#define KVM_MAGIC_FEAT_SR (1 << 0) |
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/* MASn, ESR, PIR, and high SPRGs */ |
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#define KVM_MAGIC_FEAT_MAS0_TO_SPRG7 (1 << 1) |
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/* Magic page flags from guest to host */ |
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#define MAGIC_PAGE_FLAG_NOT_MAPPED_NX (1 << 0) |
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#endif /* _UAPI__POWERPC_KVM_PARA_H__ */
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