2009-01-03 15:23:06 -07:00
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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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2011-11-17 05:39:59 -07:00
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* Copyright 2011 Freescale Semiconductor, Inc.
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2009-01-03 15:23:06 -07:00
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#include <linux/kvm_host.h>
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#include <asm/disassemble.h>
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#include "booke.h"
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#define OP_19_XOP_RFI 50
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#define OP_31_XOP_MFMSR 83
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#define OP_31_XOP_WRTEE 131
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#define OP_31_XOP_MTMSR 146
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#define OP_31_XOP_WRTEEI 163
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static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
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{
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2010-07-29 06:47:46 -06:00
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vcpu->arch.pc = vcpu->arch.shared->srr0;
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kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
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2009-01-03 15:23:06 -07:00
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}
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int kvmppc_booke_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int inst, int *advance)
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{
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int emulated = EMULATE_DONE;
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2012-05-04 06:01:33 -06:00
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int rs = get_rs(inst);
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int rt = get_rt(inst);
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2009-01-03 15:23:06 -07:00
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switch (get_op(inst)) {
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case 19:
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switch (get_xop(inst)) {
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case OP_19_XOP_RFI:
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kvmppc_emul_rfi(vcpu);
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kvmppc_set_exit_type(vcpu, EMULATED_RFI_EXITS);
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*advance = 0;
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break;
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default:
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emulated = EMULATE_FAIL;
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break;
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}
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break;
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case 31:
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switch (get_xop(inst)) {
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case OP_31_XOP_MFMSR:
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2010-07-29 06:47:43 -06:00
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kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->msr);
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2009-01-03 15:23:06 -07:00
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kvmppc_set_exit_type(vcpu, EMULATED_MFMSR_EXITS);
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break;
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case OP_31_XOP_MTMSR:
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kvmppc_set_exit_type(vcpu, EMULATED_MTMSR_EXITS);
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2010-01-07 18:58:01 -07:00
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kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, rs));
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2009-01-03 15:23:06 -07:00
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break;
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case OP_31_XOP_WRTEE:
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2010-07-29 06:47:43 -06:00
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vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
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2010-01-07 18:58:01 -07:00
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2009-01-03 15:23:06 -07:00
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kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
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break;
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case OP_31_XOP_WRTEEI:
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2010-07-29 06:47:43 -06:00
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vcpu->arch.shared->msr = (vcpu->arch.shared->msr & ~MSR_EE)
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2009-01-03 15:23:06 -07:00
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kvmppc_set_exit_type(vcpu, EMULATED_WRTEE_EXITS);
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break;
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default:
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emulated = EMULATE_FAIL;
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}
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break;
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default:
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emulated = EMULATE_FAIL;
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}
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return emulated;
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}
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2011-12-20 08:34:43 -07:00
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/*
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* NOTE: some of these registers are not emulated on BOOKE_HV (GS-mode).
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* Their backing store is in real registers, and these functions
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* will return the wrong result if called for them in another context
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* (such as debugging).
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*/
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2009-01-03 15:23:06 -07:00
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int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
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{
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int emulated = EMULATE_DONE;
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2010-01-07 18:58:01 -07:00
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ulong spr_val = kvmppc_get_gpr(vcpu, rs);
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2009-01-03 15:23:06 -07:00
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switch (sprn) {
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case SPRN_DEAR:
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2010-07-29 06:47:45 -06:00
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vcpu->arch.shared->dar = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_ESR:
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KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn
This allows additional registers to be accessed by the guest
in PR-mode KVM without trapping.
SPRG4-7 are readable from userspace. On booke, KVM will sync
these registers when it enters the guest, so that accesses from
guest userspace will work. The guest kernel, OTOH, must consistently
use either the real registers or the shared area between exits. This
also applies to the already-paravirted SPRG3.
On non-booke, it's not clear to what extent SPRG4-7 are supported
(they're not architected for book3s, but exist on at least some classic
chips). They are copied in the get/set regs ioctls, but I do not see any
non-booke emulation. I also do not see any syncing with real registers
(in PR-mode) including the user-readable SPRG3. This patch should not
make that situation any worse.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-08 17:23:30 -07:00
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vcpu->arch.shared->esr = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_DBCR0:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.dbcr0 = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_DBCR1:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.dbcr1 = spr_val; break;
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2009-01-03 15:23:07 -07:00
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case SPRN_DBSR:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.dbsr &= ~spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_TSR:
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2011-11-17 05:39:59 -07:00
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kvmppc_clr_tsr_bits(vcpu, spr_val);
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break;
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2009-01-03 15:23:06 -07:00
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case SPRN_TCR:
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2011-11-17 05:39:59 -07:00
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kvmppc_set_tcr(vcpu, spr_val);
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2009-01-03 15:23:06 -07:00
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break;
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2011-12-20 08:34:43 -07:00
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/*
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* Note: SPRG4-7 are user-readable.
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* These values are loaded into the real SPRGs when resuming the
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* guest (PR-mode only).
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*/
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2009-01-03 15:23:06 -07:00
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case SPRN_SPRG4:
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KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn
This allows additional registers to be accessed by the guest
in PR-mode KVM without trapping.
SPRG4-7 are readable from userspace. On booke, KVM will sync
these registers when it enters the guest, so that accesses from
guest userspace will work. The guest kernel, OTOH, must consistently
use either the real registers or the shared area between exits. This
also applies to the already-paravirted SPRG3.
On non-booke, it's not clear to what extent SPRG4-7 are supported
(they're not architected for book3s, but exist on at least some classic
chips). They are copied in the get/set regs ioctls, but I do not see any
non-booke emulation. I also do not see any syncing with real registers
(in PR-mode) including the user-readable SPRG3. This patch should not
make that situation any worse.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-08 17:23:30 -07:00
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vcpu->arch.shared->sprg4 = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_SPRG5:
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KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn
This allows additional registers to be accessed by the guest
in PR-mode KVM without trapping.
SPRG4-7 are readable from userspace. On booke, KVM will sync
these registers when it enters the guest, so that accesses from
guest userspace will work. The guest kernel, OTOH, must consistently
use either the real registers or the shared area between exits. This
also applies to the already-paravirted SPRG3.
On non-booke, it's not clear to what extent SPRG4-7 are supported
(they're not architected for book3s, but exist on at least some classic
chips). They are copied in the get/set regs ioctls, but I do not see any
non-booke emulation. I also do not see any syncing with real registers
(in PR-mode) including the user-readable SPRG3. This patch should not
make that situation any worse.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-08 17:23:30 -07:00
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vcpu->arch.shared->sprg5 = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_SPRG6:
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KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn
This allows additional registers to be accessed by the guest
in PR-mode KVM without trapping.
SPRG4-7 are readable from userspace. On booke, KVM will sync
these registers when it enters the guest, so that accesses from
guest userspace will work. The guest kernel, OTOH, must consistently
use either the real registers or the shared area between exits. This
also applies to the already-paravirted SPRG3.
On non-booke, it's not clear to what extent SPRG4-7 are supported
(they're not architected for book3s, but exist on at least some classic
chips). They are copied in the get/set regs ioctls, but I do not see any
non-booke emulation. I also do not see any syncing with real registers
(in PR-mode) including the user-readable SPRG3. This patch should not
make that situation any worse.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-08 17:23:30 -07:00
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vcpu->arch.shared->sprg6 = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_SPRG7:
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KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn
This allows additional registers to be accessed by the guest
in PR-mode KVM without trapping.
SPRG4-7 are readable from userspace. On booke, KVM will sync
these registers when it enters the guest, so that accesses from
guest userspace will work. The guest kernel, OTOH, must consistently
use either the real registers or the shared area between exits. This
also applies to the already-paravirted SPRG3.
On non-booke, it's not clear to what extent SPRG4-7 are supported
(they're not architected for book3s, but exist on at least some classic
chips). They are copied in the get/set regs ioctls, but I do not see any
non-booke emulation. I also do not see any syncing with real registers
(in PR-mode) including the user-readable SPRG3. This patch should not
make that situation any worse.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-08 17:23:30 -07:00
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vcpu->arch.shared->sprg7 = spr_val; break;
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2009-01-03 15:23:06 -07:00
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case SPRN_IVPR:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivpr = spr_val;
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2011-12-20 08:34:43 -07:00
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#ifdef CONFIG_KVM_BOOKE_HV
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mtspr(SPRN_GIVPR, spr_val);
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#endif
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR0:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR1:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR2:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
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2011-12-20 08:34:43 -07:00
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#ifdef CONFIG_KVM_BOOKE_HV
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mtspr(SPRN_GIVOR2, spr_val);
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#endif
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR3:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR4:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR5:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR6:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR7:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR8:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
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2011-12-20 08:34:43 -07:00
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#ifdef CONFIG_KVM_BOOKE_HV
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mtspr(SPRN_GIVOR8, spr_val);
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#endif
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR9:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR10:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR11:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR12:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR13:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR14:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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case SPRN_IVOR15:
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2010-01-07 18:58:01 -07:00
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vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
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2009-01-03 15:23:06 -07:00
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break;
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default:
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emulated = EMULATE_FAIL;
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}
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return emulated;
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}
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int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
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{
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int emulated = EMULATE_DONE;
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switch (sprn) {
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case SPRN_IVPR:
|
2010-01-07 18:58:01 -07:00
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kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivpr); break;
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2009-01-03 15:23:06 -07:00
|
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case SPRN_DEAR:
|
2010-07-29 06:47:45 -06:00
|
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kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->dar); break;
|
2009-01-03 15:23:06 -07:00
|
|
|
case SPRN_ESR:
|
KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn
This allows additional registers to be accessed by the guest
in PR-mode KVM without trapping.
SPRG4-7 are readable from userspace. On booke, KVM will sync
these registers when it enters the guest, so that accesses from
guest userspace will work. The guest kernel, OTOH, must consistently
use either the real registers or the shared area between exits. This
also applies to the already-paravirted SPRG3.
On non-booke, it's not clear to what extent SPRG4-7 are supported
(they're not architected for book3s, but exist on at least some classic
chips). They are copied in the get/set regs ioctls, but I do not see any
non-booke emulation. I also do not see any syncing with real registers
(in PR-mode) including the user-readable SPRG3. This patch should not
make that situation any worse.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-08 17:23:30 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->esr); break;
|
2009-01-03 15:23:06 -07:00
|
|
|
case SPRN_DBCR0:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr0); break;
|
2009-01-03 15:23:06 -07:00
|
|
|
case SPRN_DBCR1:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbcr1); break;
|
2009-01-03 15:23:07 -07:00
|
|
|
case SPRN_DBSR:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.dbsr); break;
|
2011-11-17 05:39:59 -07:00
|
|
|
case SPRN_TSR:
|
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.tsr); break;
|
|
|
|
case SPRN_TCR:
|
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.tcr); break;
|
2009-01-03 15:23:06 -07:00
|
|
|
|
|
|
|
case SPRN_IVOR0:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR1:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR2:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR3:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR4:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR5:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR6:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR7:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR8:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR9:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR10:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR11:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_FIT]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR12:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR13:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR14:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
case SPRN_IVOR15:
|
2010-01-07 18:58:01 -07:00
|
|
|
kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG]);
|
2009-01-03 15:23:06 -07:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
emulated = EMULATE_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return emulated;
|
|
|
|
}
|