blob: 042dee5561258f166f289276be3376d6130c4a0c [file] [log] [blame]
Eddie Dong1fd4f2a2007-07-18 12:03:39 +03001/*
2 * Copyright (C) 2001 MandrakeSoft S.A.
Avi Kivity221d0592010-05-23 18:37:00 +03003 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
Eddie Dong1fd4f2a2007-07-18 12:03:39 +03004 *
5 * MandrakeSoft S.A.
6 * 43, rue d'Aboukir
7 * 75002 Paris - France
8 * http://www.linux-mandrake.com/
9 * http://www.mandrakesoft.com/
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 * Yunhong Jiang <yunhong.jiang@intel.com>
26 * Yaozu (Eddie) Dong <eddie.dong@intel.com>
27 * Based on Xen 3.1 code.
28 */
Sean Christopherson8d20bd62022-11-30 23:09:18 +000029#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030030
Avi Kivityedf88412007-12-16 11:02:48 +020031#include <linux/kvm_host.h>
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030032#include <linux/kvm.h>
33#include <linux/mm.h>
34#include <linux/highmem.h>
35#include <linux/smp.h>
36#include <linux/hrtimer.h>
37#include <linux/io.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090038#include <linux/slab.h>
Yang Zhangc7c9c562013-01-25 10:18:51 +080039#include <linux/export.h>
Marios Pomonis8c864052019-12-11 12:47:44 -080040#include <linux/nospec.h>
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030041#include <asm/processor.h>
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030042#include <asm/page.h>
43#include <asm/current.h>
Gleb Natapov1000ff82009-07-07 16:00:57 +030044#include <trace/events/kvm.h>
Zhang Xiantao82470192007-12-17 13:59:56 +080045
46#include "ioapic.h"
47#include "lapic.h"
Marcelo Tosattif5244722008-07-26 17:01:00 -030048#include "irq.h"
Zhang Xiantao82470192007-12-17 13:59:56 +080049
Paolo Bonzini0b10a1c2014-03-18 11:51:29 +010050static int ioapic_service(struct kvm_ioapic *vioapic, int irq,
Yang Zhangaa2fbe62013-04-11 19:21:40 +080051 bool line_status);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030052
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -060053static void kvm_ioapic_update_eoi_one(struct kvm_vcpu *vcpu,
54 struct kvm_ioapic *ioapic,
55 int trigger_mode,
56 int pin);
57
Jinrong Liang019024e52022-01-25 17:59:03 +080058static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030059{
60 unsigned long result = 0;
61
62 switch (ioapic->ioregsel) {
63 case IOAPIC_REG_VERSION:
64 result = ((((IOAPIC_NUM_PINS - 1) & 0xff) << 16)
65 | (IOAPIC_VERSION_ID & 0xff));
66 break;
67
68 case IOAPIC_REG_APIC_ID:
69 case IOAPIC_REG_ARB_ID:
70 result = ((ioapic->id & 0xf) << 24);
71 break;
72
73 default:
74 {
75 u32 redir_index = (ioapic->ioregsel - 0x10) >> 1;
Marios Pomonis8c864052019-12-11 12:47:44 -080076 u64 redir_content = ~0ULL;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030077
Marios Pomonis8c864052019-12-11 12:47:44 -080078 if (redir_index < IOAPIC_NUM_PINS) {
79 u32 index = array_index_nospec(
80 redir_index, IOAPIC_NUM_PINS);
81
82 redir_content = ioapic->redirtbl[index].bits;
83 }
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030084
Eddie Dong1fd4f2a2007-07-18 12:03:39 +030085 result = (ioapic->ioregsel & 0x1) ?
86 (redir_content >> 32) & 0xffffffff :
87 redir_content & 0xffffffff;
88 break;
89 }
90 }
91
92 return result;
93}
94
Yang Zhang10606912013-04-11 19:21:38 +080095static void rtc_irq_eoi_tracking_reset(struct kvm_ioapic *ioapic)
96{
97 ioapic->rtc_status.pending_eoi = 0;
Juergen Grossa1c42dd2021-09-13 15:57:44 +020098 bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPU_IDS);
Yang Zhang10606912013-04-11 19:21:38 +080099}
100
Paolo Bonzini4009b242014-03-28 20:41:51 +0100101static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic);
102
103static void rtc_status_pending_eoi_check_valid(struct kvm_ioapic *ioapic)
104{
105 if (WARN_ON(ioapic->rtc_status.pending_eoi < 0))
106 kvm_rtc_eoi_tracking_restore_all(ioapic);
107}
108
Yang Zhang10606912013-04-11 19:21:38 +0800109static void __rtc_irq_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
110{
111 bool new_val, old_val;
112 struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
Paolo Bonzinib0eaf452016-09-14 23:39:12 +0200113 struct dest_map *dest_map = &ioapic->rtc_status.dest_map;
Yang Zhang10606912013-04-11 19:21:38 +0800114 union kvm_ioapic_redirect_entry *e;
115
116 e = &ioapic->redirtbl[RTC_GSI];
Peter Xu5c69d5c2019-12-04 20:07:20 +0100117 if (!kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
118 e->fields.dest_id,
119 kvm_lapic_irq_dest_mode(!!e->fields.dest_mode)))
Yang Zhang10606912013-04-11 19:21:38 +0800120 return;
121
122 new_val = kvm_apic_pending_eoi(vcpu, e->fields.vector);
Paolo Bonzinib0eaf452016-09-14 23:39:12 +0200123 old_val = test_bit(vcpu->vcpu_id, dest_map->map);
Yang Zhang10606912013-04-11 19:21:38 +0800124
125 if (new_val == old_val)
126 return;
127
128 if (new_val) {
Paolo Bonzinib0eaf452016-09-14 23:39:12 +0200129 __set_bit(vcpu->vcpu_id, dest_map->map);
130 dest_map->vectors[vcpu->vcpu_id] = e->fields.vector;
Yang Zhang10606912013-04-11 19:21:38 +0800131 ioapic->rtc_status.pending_eoi++;
132 } else {
Paolo Bonzinib0eaf452016-09-14 23:39:12 +0200133 __clear_bit(vcpu->vcpu_id, dest_map->map);
Yang Zhang10606912013-04-11 19:21:38 +0800134 ioapic->rtc_status.pending_eoi--;
Paolo Bonzini4009b242014-03-28 20:41:51 +0100135 rtc_status_pending_eoi_check_valid(ioapic);
Yang Zhang10606912013-04-11 19:21:38 +0800136 }
Yang Zhang10606912013-04-11 19:21:38 +0800137}
138
139void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
140{
141 struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
142
143 spin_lock(&ioapic->lock);
144 __rtc_irq_eoi_tracking_restore_one(vcpu);
145 spin_unlock(&ioapic->lock);
146}
147
148static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic)
149{
150 struct kvm_vcpu *vcpu;
Marc Zyngier46808a42021-11-16 16:04:02 +0000151 unsigned long i;
Yang Zhang10606912013-04-11 19:21:38 +0800152
153 if (RTC_GSI >= IOAPIC_NUM_PINS)
154 return;
155
156 rtc_irq_eoi_tracking_reset(ioapic);
157 kvm_for_each_vcpu(i, vcpu, ioapic->kvm)
158 __rtc_irq_eoi_tracking_restore_one(vcpu);
159}
160
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600161static void rtc_irq_eoi(struct kvm_ioapic *ioapic, struct kvm_vcpu *vcpu,
162 int vector)
Yang Zhang2c2bf012013-04-11 19:21:41 +0800163{
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600164 struct dest_map *dest_map = &ioapic->rtc_status.dest_map;
165
166 /* RTC special handling */
167 if (test_bit(vcpu->vcpu_id, dest_map->map) &&
168 (vector == dest_map->vectors[vcpu->vcpu_id]) &&
169 (test_and_clear_bit(vcpu->vcpu_id,
170 ioapic->rtc_status.dest_map.map))) {
Yang Zhang2c2bf012013-04-11 19:21:41 +0800171 --ioapic->rtc_status.pending_eoi;
Paolo Bonzini4009b242014-03-28 20:41:51 +0100172 rtc_status_pending_eoi_check_valid(ioapic);
173 }
Yang Zhang2c2bf012013-04-11 19:21:41 +0800174}
175
176static bool rtc_irq_check_coalesced(struct kvm_ioapic *ioapic)
177{
178 if (ioapic->rtc_status.pending_eoi > 0)
179 return true; /* coalesced */
180
181 return false;
182}
183
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -0600184static void ioapic_lazy_update_eoi(struct kvm_ioapic *ioapic, int irq)
185{
Marc Zyngier46808a42021-11-16 16:04:02 +0000186 unsigned long i;
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -0600187 struct kvm_vcpu *vcpu;
188 union kvm_ioapic_redirect_entry *entry = &ioapic->redirtbl[irq];
189
190 kvm_for_each_vcpu(i, vcpu, ioapic->kvm) {
191 if (!kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
192 entry->fields.dest_id,
193 entry->fields.dest_mode) ||
194 kvm_apic_pending_eoi(vcpu, entry->fields.vector))
195 continue;
196
197 /*
198 * If no longer has pending EOI in LAPICs, update
Vitaly Kuznetsov77377062020-10-24 04:13:24 -0400199 * EOI for this vector.
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -0600200 */
201 rtc_irq_eoi(ioapic, vcpu, entry->fields.vector);
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -0600202 break;
203 }
204}
205
Paolo Bonzini44847de2014-03-18 12:00:14 +0100206static int ioapic_set_irq(struct kvm_ioapic *ioapic, unsigned int irq,
207 int irq_level, bool line_status)
208{
209 union kvm_ioapic_redirect_entry entry;
210 u32 mask = 1 << irq;
211 u32 old_irr;
212 int edge, ret;
213
214 entry = ioapic->redirtbl[irq];
215 edge = (entry.fields.trig_mode == IOAPIC_EDGE_TRIG);
216
217 if (!irq_level) {
218 ioapic->irr &= ~mask;
219 ret = 1;
220 goto out;
221 }
222
223 /*
Paolo Bonzini8be8f932020-05-04 12:19:45 -0400224 * AMD SVM AVIC accelerate EOI write iff the interrupt is edge
225 * triggered, in which case the in-kernel IOAPIC will not be able
226 * to receive the EOI. In this case, we do a lazy update of the
227 * pending EOI when trying to set IOAPIC irq.
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -0600228 */
Paolo Bonzini8be8f932020-05-04 12:19:45 -0400229 if (edge && kvm_apicv_activated(ioapic->kvm))
Suravee Suthikulpanitf458d032019-11-14 14:15:19 -0600230 ioapic_lazy_update_eoi(ioapic, irq);
231
232 /*
Paolo Bonzini44847de2014-03-18 12:00:14 +0100233 * Return 0 for coalesced interrupts; for edge-triggered interrupts,
234 * this only happens if a previous edge has not been delivered due
Miaohe Lin00116792019-12-11 14:26:23 +0800235 * to masking. For level interrupts, the remote_irr field tells
Paolo Bonzini44847de2014-03-18 12:00:14 +0100236 * us if the interrupt is waiting for an EOI.
237 *
238 * RTC is special: it is edge-triggered, but userspace likes to know
239 * if it has been already ack-ed via EOI because coalesced RTC
240 * interrupts lead to time drift in Windows guests. So we track
241 * EOI manually for the RTC interrupt.
242 */
243 if (irq == RTC_GSI && line_status &&
244 rtc_irq_check_coalesced(ioapic)) {
245 ret = 0;
246 goto out;
247 }
248
249 old_irr = ioapic->irr;
250 ioapic->irr |= mask;
Nikita Leshenko7d225362017-11-05 15:52:31 +0200251 if (edge) {
Wincy Van5bda6ee2014-12-24 11:14:29 +0800252 ioapic->irr_delivered &= ~mask;
Nikita Leshenko7d225362017-11-05 15:52:31 +0200253 if (old_irr == ioapic->irr) {
254 ret = 0;
255 goto out;
256 }
Paolo Bonzini44847de2014-03-18 12:00:14 +0100257 }
258
259 ret = ioapic_service(ioapic, irq, line_status);
260
261out:
262 trace_kvm_ioapic_set_irq(entry.bits, irq, ret == 0);
263 return ret;
264}
265
Paolo Bonzini673f7b42014-03-18 11:39:23 +0100266static void kvm_ioapic_inject_all(struct kvm_ioapic *ioapic, unsigned long irr)
267{
268 u32 idx;
269
270 rtc_irq_eoi_tracking_reset(ioapic);
271 for_each_set_bit(idx, &irr, IOAPIC_NUM_PINS)
272 ioapic_set_irq(ioapic, idx, 1, true);
273
274 kvm_rtc_eoi_tracking_restore_all(ioapic);
275}
276
277
Andrey Smetanin63086302015-11-10 15:36:32 +0300278void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, ulong *ioapic_handled_vectors)
Yang Zhangc7c9c562013-01-25 10:18:51 +0800279{
280 struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
Joerg Roedel4d99ba82016-02-29 16:04:45 +0100281 struct dest_map *dest_map = &ioapic->rtc_status.dest_map;
Yang Zhangc7c9c562013-01-25 10:18:51 +0800282 union kvm_ioapic_redirect_entry *e;
Yang Zhangc7c9c562013-01-25 10:18:51 +0800283 int index;
284
285 spin_lock(&ioapic->lock);
Joerg Roedel4d99ba82016-02-29 16:04:45 +0100286
287 /* Make sure we see any missing RTC EOI */
288 if (test_bit(vcpu->vcpu_id, dest_map->map))
289 __set_bit(dest_map->vectors[vcpu->vcpu_id],
290 ioapic_handled_vectors);
291
Yang Zhangc7c9c562013-01-25 10:18:51 +0800292 for (index = 0; index < IOAPIC_NUM_PINS; index++) {
293 e = &ioapic->redirtbl[index];
Paolo Bonzini0f6c0a72014-07-30 18:07:24 +0200294 if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG ||
295 kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index) ||
296 index == RTC_GSI) {
Peter Xu5c69d5c2019-12-04 20:07:20 +0100297 u16 dm = kvm_lapic_irq_dest_mode(!!e->fields.dest_mode);
298
299 if (kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
300 e->fields.dest_id, dm) ||
Nikita Leshenko0fc5a362017-11-05 15:52:29 +0200301 kvm_apic_pending_eoi(vcpu, e->fields.vector))
Yang Zhangcf9e65b2013-04-11 19:25:14 +0800302 __set_bit(e->fields.vector,
Andrey Smetanin63086302015-11-10 15:36:32 +0300303 ioapic_handled_vectors);
Yang Zhangc7c9c562013-01-25 10:18:51 +0800304 }
305 }
306 spin_unlock(&ioapic->lock);
307}
Yang Zhangc7c9c562013-01-25 10:18:51 +0800308
David Hildenbrand993225a2017-04-07 10:50:33 +0200309void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm)
Yang Zhangc7c9c562013-01-25 10:18:51 +0800310{
David Hildenbrand0bceb152017-04-07 10:50:25 +0200311 if (!ioapic_in_kernel(kvm))
Yang Zhangc7c9c562013-01-25 10:18:51 +0800312 return;
Yang Zhang3d81bc72013-04-11 19:25:13 +0800313 kvm_make_scan_ioapic_request(kvm);
Yang Zhangc7c9c562013-01-25 10:18:51 +0800314}
315
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300316static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
317{
318 unsigned index;
Avi Kivity75858a82009-01-04 17:10:50 +0200319 bool mask_before, mask_after;
Gleb Natapov70f93da2009-07-05 18:48:12 +0300320 union kvm_ioapic_redirect_entry *e;
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500321 int old_remote_irr, old_delivery_status, old_dest_id, old_dest_mode;
Vitaly Kuznetsov2f9b68f2021-08-27 11:25:14 +0200322 DECLARE_BITMAP(vcpu_bitmap, KVM_MAX_VCPUS);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300323
324 switch (ioapic->ioregsel) {
325 case IOAPIC_REG_VERSION:
326 /* Writes are ignored. */
327 break;
328
329 case IOAPIC_REG_APIC_ID:
330 ioapic->id = (val >> 24) & 0xf;
331 break;
332
333 case IOAPIC_REG_ARB_ID:
334 break;
335
336 default:
337 index = (ioapic->ioregsel - 0x10) >> 1;
338
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300339 if (index >= IOAPIC_NUM_PINS)
340 return;
Marios Pomonis67056452019-12-11 12:47:45 -0800341 index = array_index_nospec(index, IOAPIC_NUM_PINS);
Gleb Natapov70f93da2009-07-05 18:48:12 +0300342 e = &ioapic->redirtbl[index];
343 mask_before = e->fields.mask;
Nikita Leshenkob200dded2017-11-05 15:52:33 +0200344 /* Preserve read-only fields */
345 old_remote_irr = e->fields.remote_irr;
346 old_delivery_status = e->fields.delivery_status;
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500347 old_dest_id = e->fields.dest_id;
348 old_dest_mode = e->fields.dest_mode;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300349 if (ioapic->ioregsel & 1) {
Gleb Natapov70f93da2009-07-05 18:48:12 +0300350 e->bits &= 0xffffffff;
351 e->bits |= (u64) val << 32;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300352 } else {
Gleb Natapov70f93da2009-07-05 18:48:12 +0300353 e->bits &= ~0xffffffffULL;
354 e->bits |= (u32) val;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300355 }
Nikita Leshenkob200dded2017-11-05 15:52:33 +0200356 e->fields.remote_irr = old_remote_irr;
357 e->fields.delivery_status = old_delivery_status;
Nikita Leshenkoa8bfec22017-11-05 15:52:32 +0200358
359 /*
360 * Some OSes (Linux, Xen) assume that Remote IRR bit will
361 * be cleared by IOAPIC hardware when the entry is configured
362 * as edge-triggered. This behavior is used to simulate an
363 * explicit EOI on IOAPICs that don't have the EOI register.
364 */
365 if (e->fields.trig_mode == IOAPIC_EDGE_TRIG)
366 e->fields.remote_irr = 0;
367
Gleb Natapov70f93da2009-07-05 18:48:12 +0300368 mask_after = e->fields.mask;
Avi Kivity75858a82009-01-04 17:10:50 +0200369 if (mask_before != mask_after)
Gleb Natapov4a994352010-07-11 15:32:23 +0300370 kvm_fire_mask_notifiers(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index, mask_after);
Gleb Natapov70f93da2009-07-05 18:48:12 +0300371 if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG
Gleb Natapovb4a2f5e2009-07-05 18:48:11 +0300372 && ioapic->irr & (1 << index))
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800373 ioapic_service(ioapic, index, false);
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500374 if (e->fields.delivery_mode == APIC_DM_FIXED) {
375 struct kvm_lapic_irq irq;
376
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500377 irq.vector = e->fields.vector;
378 irq.delivery_mode = e->fields.delivery_mode << 8;
Peter Xuc96001c2019-12-04 20:07:18 +0100379 irq.dest_mode =
380 kvm_lapic_irq_dest_mode(!!e->fields.dest_mode);
Nitesh Narayan Lal0c220562020-03-13 09:16:24 -0400381 irq.level = false;
382 irq.trig_mode = e->fields.trig_mode;
383 irq.shorthand = APIC_DEST_NOSHORT;
384 irq.dest_id = e->fields.dest_id;
385 irq.msi_redir_hint = false;
Vitaly Kuznetsov2f9b68f2021-08-27 11:25:14 +0200386 bitmap_zero(vcpu_bitmap, KVM_MAX_VCPUS);
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500387 kvm_bitmap_or_dest_vcpus(ioapic->kvm, &irq,
Vitaly Kuznetsov2f9b68f2021-08-27 11:25:14 +0200388 vcpu_bitmap);
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500389 if (old_dest_mode != e->fields.dest_mode ||
390 old_dest_id != e->fields.dest_id) {
391 /*
392 * Update vcpu_bitmap with vcpus specified in
393 * the previous request as well. This is done to
394 * keep ioapic_handled_vectors synchronized.
395 */
396 irq.dest_id = old_dest_id;
Peter Xuc96001c2019-12-04 20:07:18 +0100397 irq.dest_mode =
398 kvm_lapic_irq_dest_mode(
399 !!e->fields.dest_mode);
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500400 kvm_bitmap_or_dest_vcpus(ioapic->kvm, &irq,
Vitaly Kuznetsov2f9b68f2021-08-27 11:25:14 +0200401 vcpu_bitmap);
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500402 }
403 kvm_make_scan_ioapic_request_mask(ioapic->kvm,
Vitaly Kuznetsov2f9b68f2021-08-27 11:25:14 +0200404 vcpu_bitmap);
Nitesh Narayan Lal7ee30bc2019-11-07 07:53:43 -0500405 } else {
406 kvm_make_scan_ioapic_request(ioapic->kvm);
407 }
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300408 break;
409 }
410}
411
Paolo Bonzini0b10a1c2014-03-18 11:51:29 +0100412static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300413{
Gleb Natapov58c2dde2009-03-05 16:35:04 +0200414 union kvm_ioapic_redirect_entry *entry = &ioapic->redirtbl[irq];
415 struct kvm_lapic_irq irqe;
Yang Zhang2c2bf012013-04-11 19:21:41 +0800416 int ret;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300417
Nikita Leshenkoda3fe7b2017-11-05 15:52:30 +0200418 if (entry->fields.mask ||
419 (entry->fields.trig_mode == IOAPIC_LEVEL_TRIG &&
420 entry->fields.remote_irr))
Paolo Bonzini0b10a1c2014-03-18 11:51:29 +0100421 return -1;
422
Gleb Natapov58c2dde2009-03-05 16:35:04 +0200423 irqe.dest_id = entry->fields.dest_id;
424 irqe.vector = entry->fields.vector;
Peter Xuc96001c2019-12-04 20:07:18 +0100425 irqe.dest_mode = kvm_lapic_irq_dest_mode(!!entry->fields.dest_mode);
Gleb Natapov58c2dde2009-03-05 16:35:04 +0200426 irqe.trig_mode = entry->fields.trig_mode;
427 irqe.delivery_mode = entry->fields.delivery_mode << 8;
428 irqe.level = 1;
Peter Xu150a84f2019-12-04 20:07:21 +0100429 irqe.shorthand = APIC_DEST_NOSHORT;
James Sullivan93bbf0b2015-03-18 19:26:03 -0600430 irqe.msi_redir_hint = false;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300431
Paolo Bonzini0bc830b2014-03-18 10:47:17 +0100432 if (irqe.trig_mode == IOAPIC_EDGE_TRIG)
Wincy Van5bda6ee2014-12-24 11:14:29 +0800433 ioapic->irr_delivered |= 1 << irq;
Paolo Bonzini0bc830b2014-03-18 10:47:17 +0100434
Yang Zhang2c2bf012013-04-11 19:21:41 +0800435 if (irq == RTC_GSI && line_status) {
Paolo Bonzini4009b242014-03-28 20:41:51 +0100436 /*
437 * pending_eoi cannot ever become negative (see
438 * rtc_status_pending_eoi_check_valid) and the caller
439 * ensures that it is only called if it is >= zero, namely
440 * if rtc_irq_check_coalesced returns false).
441 */
Yang Zhang2c2bf012013-04-11 19:21:41 +0800442 BUG_ON(ioapic->rtc_status.pending_eoi != 0);
443 ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe,
Joerg Roedel9e4aabe2016-02-29 16:04:43 +0100444 &ioapic->rtc_status.dest_map);
Paolo Bonzini5678de3f2014-03-28 20:41:50 +0100445 ioapic->rtc_status.pending_eoi = (ret < 0 ? 0 : ret);
Yang Zhang2c2bf012013-04-11 19:21:41 +0800446 } else
447 ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, NULL);
448
Paolo Bonzini0b10a1c2014-03-18 11:51:29 +0100449 if (ret && irqe.trig_mode == IOAPIC_LEVEL_TRIG)
450 entry->fields.remote_irr = 1;
451
Yang Zhang2c2bf012013-04-11 19:21:41 +0800452 return ret;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300453}
454
Michael S. Tsirkin1a577b722012-07-19 13:45:20 +0300455int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800456 int level, bool line_status)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300457{
Michael S. Tsirkin28a6fda2012-08-14 19:20:28 +0300458 int ret, irq_level;
459
460 BUG_ON(irq < 0 || irq >= IOAPIC_NUM_PINS);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300461
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300462 spin_lock(&ioapic->lock);
Michael S. Tsirkin28a6fda2012-08-14 19:20:28 +0300463 irq_level = __kvm_irq_line_state(&ioapic->irq_states[irq],
464 irq_source_id, level);
Paolo Bonzini44847de2014-03-18 12:00:14 +0100465 ret = ioapic_set_irq(ioapic, irq, irq_level, line_status);
Yang Zhang2c2bf012013-04-11 19:21:41 +0800466
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300467 spin_unlock(&ioapic->lock);
Gleb Natapoveba02262009-08-24 11:54:25 +0300468
Gleb Natapov49256632009-02-04 17:28:14 +0200469 return ret;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300470}
471
Michael S. Tsirkin1a577b722012-07-19 13:45:20 +0300472void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id)
473{
474 int i;
475
476 spin_lock(&ioapic->lock);
477 for (i = 0; i < KVM_IOAPIC_NUM_PINS; i++)
478 __clear_bit(irq_source_id, &ioapic->irq_states[i]);
479 spin_unlock(&ioapic->lock);
480}
481
Zhang Haoyu184564e2014-09-11 16:47:04 +0800482static void kvm_ioapic_eoi_inject_work(struct work_struct *work)
483{
484 int i;
485 struct kvm_ioapic *ioapic = container_of(work, struct kvm_ioapic,
486 eoi_inject.work);
487 spin_lock(&ioapic->lock);
488 for (i = 0; i < IOAPIC_NUM_PINS; i++) {
489 union kvm_ioapic_redirect_entry *ent = &ioapic->redirtbl[i];
490
491 if (ent->fields.trig_mode != IOAPIC_LEVEL_TRIG)
492 continue;
493
494 if (ioapic->irr & (1 << i) && !ent->fields.remote_irr)
495 ioapic_service(ioapic, i, false);
496 }
497 spin_unlock(&ioapic->lock);
498}
499
500#define IOAPIC_SUCCESSIVE_IRQ_MAX_COUNT 10000
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600501static void kvm_ioapic_update_eoi_one(struct kvm_vcpu *vcpu,
502 struct kvm_ioapic *ioapic,
503 int trigger_mode,
504 int pin)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300505{
Radim Krčmářc806a6a2015-03-18 19:38:22 +0100506 struct kvm_lapic *apic = vcpu->arch.apic;
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600507 union kvm_ioapic_redirect_entry *ent = &ioapic->redirtbl[pin];
Joerg Roedel4d99ba82016-02-29 16:04:45 +0100508
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600509 /*
510 * We are dropping lock while calling ack notifiers because ack
511 * notifier callbacks for assigned devices call into IOAPIC
512 * recursively. Since remote_irr is cleared only after call
513 * to notifiers if the same vector will be delivered while lock
514 * is dropped it will be put into irr and will be delivered
515 * after ack notifier returns.
516 */
517 spin_unlock(&ioapic->lock);
518 kvm_notify_acked_irq(ioapic->kvm, KVM_IRQCHIP_IOAPIC, pin);
519 spin_lock(&ioapic->lock);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300520
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600521 if (trigger_mode != IOAPIC_LEVEL_TRIG ||
522 kvm_lapic_get_reg(apic, APIC_SPIV) & APIC_SPIV_DIRECTED_EOI)
523 return;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300524
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600525 ASSERT(ent->fields.trig_mode == IOAPIC_LEVEL_TRIG);
526 ent->fields.remote_irr = 0;
527 if (!ent->fields.mask && (ioapic->irr & (1 << pin))) {
528 ++ioapic->irq_eoi[pin];
529 if (ioapic->irq_eoi[pin] == IOAPIC_SUCCESSIVE_IRQ_MAX_COUNT) {
530 /*
531 * Real hardware does not deliver the interrupt
532 * immediately during eoi broadcast, and this
533 * lets a buggy guest make slow progress
534 * even if it does not correctly handle a
535 * level-triggered interrupt. Emulate this
536 * behavior if we detect an interrupt storm.
537 */
538 schedule_delayed_work(&ioapic->eoi_inject, HZ / 100);
539 ioapic->irq_eoi[pin] = 0;
540 trace_kvm_ioapic_delayed_eoi_inj(ent->bits);
Zhang Haoyu184564e2014-09-11 16:47:04 +0800541 } else {
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600542 ioapic_service(ioapic, pin, false);
Zhang Haoyu184564e2014-09-11 16:47:04 +0800543 }
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600544 } else {
545 ioapic->irq_eoi[pin] = 0;
Marcelo Tosattif5244722008-07-26 17:01:00 -0300546 }
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300547}
548
Yang Zhang1fcc7892013-04-11 19:21:35 +0800549void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector, int trigger_mode)
Avi Kivity4fa6b9c2008-06-17 15:36:36 -0700550{
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600551 int i;
Yang Zhang1fcc7892013-04-11 19:21:35 +0800552 struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic;
Avi Kivity4fa6b9c2008-06-17 15:36:36 -0700553
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300554 spin_lock(&ioapic->lock);
Suravee Suthikulpanit1ec24052019-11-14 14:15:18 -0600555 rtc_irq_eoi(ioapic, vcpu, vector);
556 for (i = 0; i < IOAPIC_NUM_PINS; i++) {
557 union kvm_ioapic_redirect_entry *ent = &ioapic->redirtbl[i];
558
559 if (ent->fields.vector != vector)
560 continue;
561 kvm_ioapic_update_eoi_one(vcpu, ioapic, trigger_mode, i);
562 }
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300563 spin_unlock(&ioapic->lock);
Avi Kivity4fa6b9c2008-06-17 15:36:36 -0700564}
565
Gregory Haskinsd76685c42009-06-01 12:54:50 -0400566static inline struct kvm_ioapic *to_ioapic(struct kvm_io_device *dev)
567{
568 return container_of(dev, struct kvm_ioapic, dev);
569}
570
Michael S. Tsirkinbda90202009-06-29 22:24:32 +0300571static inline int ioapic_in_range(struct kvm_ioapic *ioapic, gpa_t addr)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300572{
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300573 return ((addr >= ioapic->base_address &&
574 (addr < ioapic->base_address + IOAPIC_MEM_LENGTH)));
575}
576
Nikolay Nikolaeve32edf42015-03-26 14:39:28 +0000577static int ioapic_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
578 gpa_t addr, int len, void *val)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300579{
Gregory Haskinsd76685c42009-06-01 12:54:50 -0400580 struct kvm_ioapic *ioapic = to_ioapic(this);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300581 u32 result;
Michael S. Tsirkinbda90202009-06-29 22:24:32 +0300582 if (!ioapic_in_range(ioapic, addr))
583 return -EOPNOTSUPP;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300584
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300585 ASSERT(!(addr & 0xf)); /* check alignment */
586
587 addr &= 0xff;
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300588 spin_lock(&ioapic->lock);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300589 switch (addr) {
590 case IOAPIC_REG_SELECT:
591 result = ioapic->ioregsel;
592 break;
593
594 case IOAPIC_REG_WINDOW:
Jinrong Liang019024e52022-01-25 17:59:03 +0800595 result = ioapic_read_indirect(ioapic);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300596 break;
597
598 default:
599 result = 0;
600 break;
601 }
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300602 spin_unlock(&ioapic->lock);
Gleb Natapoveba02262009-08-24 11:54:25 +0300603
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300604 switch (len) {
605 case 8:
606 *(u64 *) val = result;
607 break;
608 case 1:
609 case 2:
610 case 4:
611 memcpy(val, (char *)&result, len);
612 break;
613 default:
614 printk(KERN_WARNING "ioapic: wrong length %d\n", len);
615 }
Michael S. Tsirkinbda90202009-06-29 22:24:32 +0300616 return 0;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300617}
618
Nikolay Nikolaeve32edf42015-03-26 14:39:28 +0000619static int ioapic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
620 gpa_t addr, int len, const void *val)
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300621{
Gregory Haskinsd76685c42009-06-01 12:54:50 -0400622 struct kvm_ioapic *ioapic = to_ioapic(this);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300623 u32 data;
Michael S. Tsirkinbda90202009-06-29 22:24:32 +0300624 if (!ioapic_in_range(ioapic, addr))
625 return -EOPNOTSUPP;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300626
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300627 ASSERT(!(addr & 0xf)); /* check alignment */
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300628
Julian Stecklinad77fe632011-11-23 13:54:30 +0100629 switch (len) {
630 case 8:
631 case 4:
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300632 data = *(u32 *) val;
Julian Stecklinad77fe632011-11-23 13:54:30 +0100633 break;
634 case 2:
635 data = *(u16 *) val;
636 break;
637 case 1:
638 data = *(u8 *) val;
639 break;
640 default:
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300641 printk(KERN_WARNING "ioapic: Unsupported size %d\n", len);
Gleb Natapoveba02262009-08-24 11:54:25 +0300642 return 0;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300643 }
644
645 addr &= 0xff;
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300646 spin_lock(&ioapic->lock);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300647 switch (addr) {
648 case IOAPIC_REG_SELECT:
Julian Stecklinad77fe632011-11-23 13:54:30 +0100649 ioapic->ioregsel = data & 0xFF; /* 8-bit register */
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300650 break;
651
652 case IOAPIC_REG_WINDOW:
653 ioapic_write_indirect(ioapic, data);
654 break;
655
656 default:
657 break;
658 }
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300659 spin_unlock(&ioapic->lock);
Michael S. Tsirkinbda90202009-06-29 22:24:32 +0300660 return 0;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300661}
662
Stephen Hemminger79408762013-12-29 12:12:29 -0800663static void kvm_ioapic_reset(struct kvm_ioapic *ioapic)
Eddie Dong8c392692007-10-10 12:15:54 +0200664{
665 int i;
666
Zhang Haoyu184564e2014-09-11 16:47:04 +0800667 cancel_delayed_work_sync(&ioapic->eoi_inject);
Eddie Dong8c392692007-10-10 12:15:54 +0200668 for (i = 0; i < IOAPIC_NUM_PINS; i++)
669 ioapic->redirtbl[i].fields.mask = 1;
670 ioapic->base_address = IOAPIC_DEFAULT_BASE_ADDRESS;
671 ioapic->ioregsel = 0;
672 ioapic->irr = 0;
Wincy Van5bda6ee2014-12-24 11:14:29 +0800673 ioapic->irr_delivered = 0;
Eddie Dong8c392692007-10-10 12:15:54 +0200674 ioapic->id = 0;
Jiri Slaby86786542016-10-13 17:45:20 +0200675 memset(ioapic->irq_eoi, 0x00, sizeof(ioapic->irq_eoi));
Yang Zhang10606912013-04-11 19:21:38 +0800676 rtc_irq_eoi_tracking_reset(ioapic);
Eddie Dong8c392692007-10-10 12:15:54 +0200677}
678
Gregory Haskinsd76685c42009-06-01 12:54:50 -0400679static const struct kvm_io_device_ops ioapic_mmio_ops = {
680 .read = ioapic_mmio_read,
681 .write = ioapic_mmio_write,
Gregory Haskinsd76685c42009-06-01 12:54:50 -0400682};
683
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300684int kvm_ioapic_init(struct kvm *kvm)
685{
686 struct kvm_ioapic *ioapic;
Gregory Haskins090b7af2009-07-07 17:08:44 -0400687 int ret;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300688
Ben Gardon254272c2019-02-11 11:02:50 -0800689 ioapic = kzalloc(sizeof(struct kvm_ioapic), GFP_KERNEL_ACCOUNT);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300690 if (!ioapic)
691 return -ENOMEM;
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300692 spin_lock_init(&ioapic->lock);
Zhang Haoyu184564e2014-09-11 16:47:04 +0800693 INIT_DELAYED_WORK(&ioapic->eoi_inject, kvm_ioapic_eoi_inject_work);
Zhang Xiantaod7deeeb02007-12-14 10:17:34 +0800694 kvm->arch.vioapic = ioapic;
Eddie Dong8c392692007-10-10 12:15:54 +0200695 kvm_ioapic_reset(ioapic);
Gregory Haskinsd76685c42009-06-01 12:54:50 -0400696 kvm_iodevice_init(&ioapic->dev, &ioapic_mmio_ops);
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300697 ioapic->kvm = kvm;
Marcelo Tosatti79fac952009-12-23 14:35:26 -0200698 mutex_lock(&kvm->slots_lock);
Sasha Levin743eeb02011-07-27 16:00:48 +0300699 ret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, ioapic->base_address,
700 IOAPIC_MEM_LENGTH, &ioapic->dev);
Marcelo Tosatti79fac952009-12-23 14:35:26 -0200701 mutex_unlock(&kvm->slots_lock);
Wei Yongjun1ae77ba2010-02-09 10:31:09 +0800702 if (ret < 0) {
703 kvm->arch.vioapic = NULL;
Gregory Haskins090b7af2009-07-07 17:08:44 -0400704 kfree(ioapic);
Wei Yongjun1ae77ba2010-02-09 10:31:09 +0800705 }
Gregory Haskins090b7af2009-07-07 17:08:44 -0400706
707 return ret;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300708}
Avi Kivity75858a82009-01-04 17:10:50 +0200709
Wei Yongjun72bb2fc2010-02-09 10:33:03 +0800710void kvm_ioapic_destroy(struct kvm *kvm)
711{
712 struct kvm_ioapic *ioapic = kvm->arch.vioapic;
713
Peter Xu950712e2017-03-15 16:01:18 +0800714 if (!ioapic)
715 return;
716
Zhang Haoyu184564e2014-09-11 16:47:04 +0800717 cancel_delayed_work_sync(&ioapic->eoi_inject);
David Hildenbrand49f520b2017-04-07 10:50:29 +0200718 mutex_lock(&kvm->slots_lock);
Julia Lawalld90e3a32015-04-27 22:35:34 +0200719 kvm_io_bus_unregister_dev(kvm, KVM_MMIO_BUS, &ioapic->dev);
David Hildenbrand49f520b2017-04-07 10:50:29 +0200720 mutex_unlock(&kvm->slots_lock);
Julia Lawalld90e3a32015-04-27 22:35:34 +0200721 kvm->arch.vioapic = NULL;
722 kfree(ioapic);
Wei Yongjun72bb2fc2010-02-09 10:33:03 +0800723}
724
David Hildenbrand33392b42017-04-07 10:50:27 +0200725void kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
Gleb Natapoveba02262009-08-24 11:54:25 +0300726{
David Hildenbrand0191e922017-04-07 10:50:24 +0200727 struct kvm_ioapic *ioapic = kvm->arch.vioapic;
Gleb Natapoveba02262009-08-24 11:54:25 +0300728
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300729 spin_lock(&ioapic->lock);
Gleb Natapoveba02262009-08-24 11:54:25 +0300730 memcpy(state, ioapic, sizeof(struct kvm_ioapic_state));
Wincy Van5bda6ee2014-12-24 11:14:29 +0800731 state->irr &= ~ioapic->irr_delivered;
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300732 spin_unlock(&ioapic->lock);
Gleb Natapoveba02262009-08-24 11:54:25 +0300733}
734
David Hildenbrand33392b42017-04-07 10:50:27 +0200735void kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
Gleb Natapoveba02262009-08-24 11:54:25 +0300736{
David Hildenbrand0191e922017-04-07 10:50:24 +0200737 struct kvm_ioapic *ioapic = kvm->arch.vioapic;
Gleb Natapoveba02262009-08-24 11:54:25 +0300738
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300739 spin_lock(&ioapic->lock);
Gleb Natapoveba02262009-08-24 11:54:25 +0300740 memcpy(ioapic, state, sizeof(struct kvm_ioapic_state));
Paolo Bonzini673f7b42014-03-18 11:39:23 +0100741 ioapic->irr = 0;
Wincy Van5bda6ee2014-12-24 11:14:29 +0800742 ioapic->irr_delivered = 0;
David Hildenbrandca8ab3f2017-04-07 10:50:32 +0200743 kvm_make_scan_ioapic_request(kvm);
Paolo Bonzini673f7b42014-03-18 11:39:23 +0100744 kvm_ioapic_inject_all(ioapic, state->irr);
Marcelo Tosatti46a47b12010-04-23 14:03:38 -0300745 spin_unlock(&ioapic->lock);
Gleb Natapoveba02262009-08-24 11:54:25 +0300746}