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[Qemu-devel] [PATCH v4 09/16] apic: drop APICCommonState.idx and use API
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH v4 09/16] apic: drop APICCommonState.idx and use APIC ID as index in local_apics[] |
Date: |
Thu, 14 Jul 2016 18:54:38 +0200 |
local_apics[] is sized to contain all APIC ID supported in xAPIC mode,
so use APIC ID as index in it instead of constantly increasing counter idx.
Fixes error "apic initialization failed" when a CPU hotplugged and
unplugged more times than there are free slots in local_apics[].
Signed-off-by: Igor Mammedov <address@hidden>
---
CC: Radim Krčmář <address@hidden>
CC: address@hidden
---
include/hw/i386/apic_internal.h | 1 -
hw/intc/apic.c | 16 +++++++---------
2 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h
index 67348e9..8330592 100644
--- a/include/hw/i386/apic_internal.h
+++ b/include/hw/i386/apic_internal.h
@@ -174,7 +174,6 @@ struct APICCommonState {
uint32_t initial_count;
int64_t initial_count_load_time;
int64_t next_time;
- int idx; /* not actually common, used only by 'apic' derived class */
QEMUTimer *timer;
int64_t timer_expiry;
int sipi_vector;
diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index b0d237b..f473572 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -421,7 +421,7 @@ static int apic_find_dest(uint8_t dest)
int i;
if (apic && apic->id == dest)
- return dest; /* shortcut in case apic->id == apic->idx */
+ return dest; /* shortcut in case apic->id == local_apics[dest]->id */
for (i = 0; i < MAX_APICS; i++) {
apic = local_apics[i];
@@ -504,14 +504,14 @@ static void apic_deliver(DeviceState *dev, uint8_t dest,
uint8_t dest_mode,
break;
case 1:
memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask));
- apic_set_bit(deliver_bitmask, s->idx);
+ apic_set_bit(deliver_bitmask, s->id);
break;
case 2:
memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
break;
case 3:
memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
- apic_reset_bit(deliver_bitmask, s->idx);
+ apic_reset_bit(deliver_bitmask, s->id);
break;
}
@@ -871,20 +871,18 @@ static const MemoryRegionOps apic_io_ops = {
static void apic_realize(DeviceState *dev, Error **errp)
{
APICCommonState *s = APIC_COMMON(dev);
- static int apic_no;
- if (apic_no >= MAX_APICS) {
- error_setg(errp, "%s initialization failed.",
- object_get_typename(OBJECT(dev)));
+ if (s->id >= MAX_APICS) {
+ error_setg(errp, "%s initialization failed. APIC ID %d is invalid",
+ object_get_typename(OBJECT(dev)), s->id);
return;
}
- s->idx = apic_no++;
memory_region_init_io(&s->io_memory, OBJECT(s), &apic_io_ops, s,
"apic-msi",
APIC_SPACE_SIZE);
s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, apic_timer, s);
- local_apics[s->idx] = s;
+ local_apics[s->id] = s;
msi_nonbroken = true;
}
--
2.7.4
[Qemu-devel] [PATCH v4 06/16] pc: cpu: allow device_add to be used with x86 cpu, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 07/16] pc: implement query-hotpluggable-cpus callback, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 09/16] apic: drop APICCommonState.idx and use APIC ID as index in local_apics[],
Igor Mammedov <=
[Qemu-devel] [PATCH v4 08/16] apic: move MAX_APICS check to 'apic' class, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 11/16] (kvm)apic: add unrealize callbacks, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 10/16] apic: kvm-apic: fix crash due to access to freed memory region, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 13/16] target-i386: cpu: do not ignore error and fix apic parent, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 12/16] apic: use apic_id as apic's migration instance_id, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 14/16] target-i386: fix apic object leak when CPU is deleted, Igor Mammedov, 2016/07/14
[Qemu-devel] [PATCH v4 15/16] target-i386: add x86_cpu_unrealizefn(), Igor Mammedov, 2016/07/14