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-rw-r--r--hw/i386/pc.c12
-rw-r--r--hw/i386/x86.c32
-rw-r--r--include/hw/i386/topology.h38
-rw-r--r--include/hw/i386/x86.h3
-rw-r--r--tests/test-x86-cpuid.c43
5 files changed, 81 insertions, 47 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index f52e84b2ba..662abb549d 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1513,6 +1513,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
X86MachineState *x86ms = X86_MACHINE(pcms);
unsigned int smp_cores = ms->smp.cores;
unsigned int smp_threads = ms->smp.threads;
+ X86CPUTopoInfo topo_info;
if(!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) {
error_setg(errp, "Invalid CPU type, expected cpu type: '%s'",
@@ -1520,6 +1521,8 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
return;
}
+ init_topo_info(&topo_info, x86ms);
+
env->nr_dies = x86ms->smp_dies;
/*
@@ -1575,16 +1578,14 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
topo_ids.die_id = cpu->die_id;
topo_ids.core_id = cpu->core_id;
topo_ids.smt_id = cpu->thread_id;
- cpu->apic_id = apicid_from_topo_ids(x86ms->smp_dies, smp_cores,
- smp_threads, &topo_ids);
+ cpu->apic_id = apicid_from_topo_ids(&topo_info, &topo_ids);
}
cpu_slot = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, &idx);
if (!cpu_slot) {
MachineState *ms = MACHINE(pcms);
- x86_topo_ids_from_apicid(cpu->apic_id, x86ms->smp_dies,
- smp_cores, smp_threads, &topo_ids);
+ x86_topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids);
error_setg(errp,
"Invalid CPU [socket: %u, die: %u, core: %u, thread: %u] with"
" APIC ID %" PRIu32 ", valid index range 0:%d",
@@ -1605,8 +1606,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
/* TODO: move socket_id/core_id/thread_id checks into x86_cpu_realizefn()
* once -smp refactoring is complete and there will be CPU private
* CPUState::nr_cores and CPUState::nr_threads fields instead of globals */
- x86_topo_ids_from_apicid(cpu->apic_id, x86ms->smp_dies,
- smp_cores, smp_threads, &topo_ids);
+ x86_topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids);
if (cpu->socket_id != -1 && cpu->socket_id != topo_ids.pkg_id) {
error_setg(errp, "property socket-id: %u doesn't match set apic-id:"
" 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id,
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index c6ee5aac8c..b7d94e8dfe 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -57,6 +57,16 @@
/* Physical Address of PVH entry point read from kernel ELF NOTE */
static size_t pvh_start_addr;
+inline void init_topo_info(X86CPUTopoInfo *topo_info,
+ const X86MachineState *x86ms)
+{
+ MachineState *ms = MACHINE(x86ms);
+
+ topo_info->dies_per_pkg = x86ms->smp_dies;
+ topo_info->cores_per_die = ms->smp.cores;
+ topo_info->threads_per_core = ms->smp.threads;
+}
+
/*
* Calculates initial APIC ID for a specific CPU index
*
@@ -68,13 +78,14 @@ static size_t pvh_start_addr;
uint32_t x86_cpu_apic_id_from_index(X86MachineState *x86ms,
unsigned int cpu_index)
{
- MachineState *ms = MACHINE(x86ms);
X86MachineClass *x86mc = X86_MACHINE_GET_CLASS(x86ms);
+ X86CPUTopoInfo topo_info;
uint32_t correct_id;
static bool warned;
- correct_id = x86_apicid_from_cpu_idx(x86ms->smp_dies, ms->smp.cores,
- ms->smp.threads, cpu_index);
+ init_topo_info(&topo_info, x86ms);
+
+ correct_id = x86_apicid_from_cpu_idx(&topo_info, cpu_index);
if (x86mc->compat_apic_id_mode) {
if (cpu_index != correct_id && !warned && !qtest_enabled()) {
error_report("APIC IDs set in compatibility mode, "
@@ -145,19 +156,22 @@ int64_t x86_get_default_cpu_node_id(const MachineState *ms, int idx)
{
X86CPUTopoIDs topo_ids;
X86MachineState *x86ms = X86_MACHINE(ms);
+ X86CPUTopoInfo topo_info;
+
+ init_topo_info(&topo_info, x86ms);
assert(idx < ms->possible_cpus->len);
x86_topo_ids_from_apicid(ms->possible_cpus->cpus[idx].arch_id,
- x86ms->smp_dies, ms->smp.cores,
- ms->smp.threads, &topo_ids);
+ &topo_info, &topo_ids);
return topo_ids.pkg_id % ms->numa_state->num_nodes;
}
const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms)
{
X86MachineState *x86ms = X86_MACHINE(ms);
- int i;
unsigned int max_cpus = ms->smp.max_cpus;
+ X86CPUTopoInfo topo_info;
+ int i;
if (ms->possible_cpus) {
/*
@@ -171,6 +185,9 @@ const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms)
ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
sizeof(CPUArchId) * max_cpus);
ms->possible_cpus->len = max_cpus;
+
+ init_topo_info(&topo_info, x86ms);
+
for (i = 0; i < ms->possible_cpus->len; i++) {
X86CPUTopoIDs topo_ids;
@@ -179,8 +196,7 @@ const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms)
ms->possible_cpus->cpus[i].arch_id =
x86_cpu_apic_id_from_index(x86ms, i);
x86_topo_ids_from_apicid(ms->possible_cpus->cpus[i].arch_id,
- x86ms->smp_dies, ms->smp.cores,
- ms->smp.threads, &topo_ids);
+ &topo_info, &topo_ids);
ms->possible_cpus->cpus[i].props.has_socket_id = true;
ms->possible_cpus->cpus[i].props.socket_id = topo_ids.pkg_id;
if (x86ms->smp_dies > 1) {
diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h
index 52def68610..7ea507f376 100644
--- a/include/hw/i386/topology.h
+++ b/include/hw/i386/topology.h
@@ -52,6 +52,12 @@ typedef struct X86CPUTopoIDs {
unsigned smt_id;
} X86CPUTopoIDs;
+typedef struct X86CPUTopoInfo {
+ unsigned dies_per_pkg;
+ unsigned cores_per_die;
+ unsigned threads_per_core;
+} X86CPUTopoInfo;
+
/* Return the bit width needed for 'count' IDs
*/
static unsigned apicid_bitwidth_for_count(unsigned count)
@@ -119,11 +125,13 @@ static inline unsigned apicid_pkg_offset(unsigned nr_dies,
*
* The caller must make sure core_id < nr_cores and smt_id < nr_threads.
*/
-static inline apic_id_t apicid_from_topo_ids(unsigned nr_dies,
- unsigned nr_cores,
- unsigned nr_threads,
+static inline apic_id_t apicid_from_topo_ids(X86CPUTopoInfo *topo_info,
const X86CPUTopoIDs *topo_ids)
{
+ unsigned nr_dies = topo_info->dies_per_pkg;
+ unsigned nr_cores = topo_info->cores_per_die;
+ unsigned nr_threads = topo_info->threads_per_core;
+
return (topo_ids->pkg_id <<
apicid_pkg_offset(nr_dies, nr_cores, nr_threads)) |
(topo_ids->die_id <<
@@ -136,12 +144,14 @@ static inline apic_id_t apicid_from_topo_ids(unsigned nr_dies,
/* Calculate thread/core/package IDs for a specific topology,
* based on (contiguous) CPU index
*/
-static inline void x86_topo_ids_from_idx(unsigned nr_dies,
- unsigned nr_cores,
- unsigned nr_threads,
+static inline void x86_topo_ids_from_idx(X86CPUTopoInfo *topo_info,
unsigned cpu_index,
X86CPUTopoIDs *topo_ids)
{
+ unsigned nr_dies = topo_info->dies_per_pkg;
+ unsigned nr_cores = topo_info->cores_per_die;
+ unsigned nr_threads = topo_info->threads_per_core;
+
topo_ids->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads);
topo_ids->die_id = cpu_index / (nr_cores * nr_threads) % nr_dies;
topo_ids->core_id = cpu_index / nr_threads % nr_cores;
@@ -152,11 +162,13 @@ static inline void x86_topo_ids_from_idx(unsigned nr_dies,
* based on APIC ID
*/
static inline void x86_topo_ids_from_apicid(apic_id_t apicid,
- unsigned nr_dies,
- unsigned nr_cores,
- unsigned nr_threads,
+ X86CPUTopoInfo *topo_info,
X86CPUTopoIDs *topo_ids)
{
+ unsigned nr_dies = topo_info->dies_per_pkg;
+ unsigned nr_cores = topo_info->cores_per_die;
+ unsigned nr_threads = topo_info->threads_per_core;
+
topo_ids->smt_id = apicid &
~(0xFFFFFFFFUL << apicid_smt_width(nr_dies, nr_cores, nr_threads));
topo_ids->core_id =
@@ -173,14 +185,12 @@ static inline void x86_topo_ids_from_apicid(apic_id_t apicid,
*
* 'cpu_index' is a sequential, contiguous ID for the CPU.
*/
-static inline apic_id_t x86_apicid_from_cpu_idx(unsigned nr_dies,
- unsigned nr_cores,
- unsigned nr_threads,
+static inline apic_id_t x86_apicid_from_cpu_idx(X86CPUTopoInfo *topo_info,
unsigned cpu_index)
{
X86CPUTopoIDs topo_ids;
- x86_topo_ids_from_idx(nr_dies, nr_cores, nr_threads, cpu_index, &topo_ids);
- return apicid_from_topo_ids(nr_dies, nr_cores, nr_threads, &topo_ids);
+ x86_topo_ids_from_idx(topo_info, cpu_index, &topo_ids);
+ return apicid_from_topo_ids(topo_info, &topo_ids);
}
#endif /* HW_I386_TOPOLOGY_H */
diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
index 41fe37b8a3..22babcb3bb 100644
--- a/include/hw/i386/x86.h
+++ b/include/hw/i386/x86.h
@@ -21,6 +21,7 @@
#include "exec/hwaddr.h"
#include "qemu/notify.h"
+#include "hw/i386/topology.h"
#include "hw/boards.h"
#include "hw/nmi.h"
#include "hw/isa/isa.h"
@@ -82,6 +83,8 @@ typedef struct {
#define X86_MACHINE_CLASS(class) \
OBJECT_CLASS_CHECK(X86MachineClass, class, TYPE_X86_MACHINE)
+void init_topo_info(X86CPUTopoInfo *topo_info, const X86MachineState *x86ms);
+
uint32_t x86_cpu_apic_id_from_index(X86MachineState *pcms,
unsigned int cpu_index);
diff --git a/tests/test-x86-cpuid.c b/tests/test-x86-cpuid.c
index 1942287f33..66b953113b 100644
--- a/tests/test-x86-cpuid.c
+++ b/tests/test-x86-cpuid.c
@@ -28,15 +28,18 @@
static void test_topo_bits(void)
{
+ X86CPUTopoInfo topo_info = {0};
+
/* simple tests for 1 thread per core, 1 core per die, 1 die per package */
g_assert_cmpuint(apicid_smt_width(1, 1, 1), ==, 0);
g_assert_cmpuint(apicid_core_width(1, 1, 1), ==, 0);
g_assert_cmpuint(apicid_die_width(1, 1, 1), ==, 0);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 0), ==, 0);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 1), ==, 1);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 2), ==, 2);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 3), ==, 3);
+ topo_info = (X86CPUTopoInfo) {1, 1, 1};
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 3), ==, 3);
/* Test field width calculation for multiple values
@@ -71,36 +74,38 @@ static void test_topo_bits(void)
g_assert_cmpuint(apicid_die_offset(1, 6, 3), ==, 5);
g_assert_cmpuint(apicid_pkg_offset(1, 6, 3), ==, 5);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 0), ==, 0);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1), ==, 1);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2), ==, 2);
+ topo_info = (X86CPUTopoInfo) {1, 6, 3};
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1);
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1 * 3 + 0), ==,
+ topo_info = (X86CPUTopoInfo) {1, 6, 3};
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 0), ==,
(1 << 2) | 0);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1 * 3 + 1), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 1), ==,
(1 << 2) | 1);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1 * 3 + 2), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 2), ==,
(1 << 2) | 2);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2 * 3 + 0), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 0), ==,
(2 << 2) | 0);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2 * 3 + 1), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 1), ==,
(2 << 2) | 1);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2 * 3 + 2), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 2), ==,
(2 << 2) | 2);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 5 * 3 + 0), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 0), ==,
(5 << 2) | 0);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 5 * 3 + 1), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 1), ==,
(5 << 2) | 1);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 5 * 3 + 2), ==,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 2), ==,
(5 << 2) | 2);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
1 * 6 * 3 + 0 * 3 + 0), ==, (1 << 5));
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
1 * 6 * 3 + 1 * 3 + 1), ==, (1 << 5) | (1 << 2) | 1);
- g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3,
+ g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
3 * 6 * 3 + 5 * 3 + 2), ==, (3 << 5) | (5 << 2) | 2);
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-11 17:05:45 +0000