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[Qemu-devel] [PULL 02/29] cpu: cpu_by_arch_id() helper
From: |
Eduardo Habkost |
Subject: |
[Qemu-devel] [PULL 02/29] cpu: cpu_by_arch_id() helper |
Date: |
Fri, 1 Sep 2017 12:02:50 -0300 |
The helper can be used for CPU object lookup using the CPU's
arch-specific ID (the one returned by CPUClass::get_arch_id()).
Signed-off-by: Eduardo Habkost <address@hidden>
[Yi Wang: Added documentation comments]
Signed-off-by: Yi Wang <address@hidden>
Signed-off-by: Yun Liu <address@hidden>
[ehabkost: extracted cpu_by_arch_id() to a separate patch]
Signed-off-by: Eduardo Habkost <address@hidden>
---
include/qom/cpu.h | 10 ++++++++++
qom/cpu.c | 11 ++++++++---
2 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 25eefea7ab..b7ac9491c8 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -755,6 +755,16 @@ CPUState *qemu_get_cpu(int index);
bool cpu_exists(int64_t id);
/**
+ * cpu_by_arch_id:
+ * @id: Guest-exposed CPU ID of the CPU to obtain.
+ *
+ * Get a CPU with matching @id.
+ *
+ * Returns: The CPU or %NULL if there is no matching CPU.
+ */
+CPUState *cpu_by_arch_id(int64_t id);
+
+/**
* cpu_throttle_set:
* @new_throttle_pct: Percent of sleep time. Valid range is 1 to 99.
*
diff --git a/qom/cpu.c b/qom/cpu.c
index 4f38db0dac..e6210d5949 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -34,7 +34,7 @@
CPUInterruptHandler cpu_interrupt_handler;
-bool cpu_exists(int64_t id)
+CPUState *cpu_by_arch_id(int64_t id)
{
CPUState *cpu;
@@ -42,10 +42,15 @@ bool cpu_exists(int64_t id)
CPUClass *cc = CPU_GET_CLASS(cpu);
if (cc->get_arch_id(cpu) == id) {
- return true;
+ return cpu;
}
}
- return false;
+ return NULL;
+}
+
+bool cpu_exists(int64_t id)
+{
+ return !!cpu_by_arch_id(id);
}
CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
--
2.13.5
- [Qemu-devel] [PULL 00/29] x86 & cpu queue, 2017-09-01, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 03/29] hmp: allow apic-id for "info lapic", Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 02/29] cpu: cpu_by_arch_id() helper,
Eduardo Habkost <=
- [Qemu-devel] [PULL 01/29] qom: Remove unused errp parameter from can_be_deleted(), Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 05/29] qom: cpu: fix parsed feature string length, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 04/29] target-i386/cpu: Add new EPYC CPU model, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 07/29] sparc: embed sparc_def_t into CPUSPARCState, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 06/29] sparc: convert cpu models to SPARC cpu subclasses, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 08/29] sparc: convert cpu features to qdev properties, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 09/29] sparc: move adhoc CPUSPARCState initialization to realize time, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 10/29] sparc: make cpu feature parsing property based, Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 11/29] sparc: replace cpu_sparc_init() with cpu_generic_init(), Eduardo Habkost, 2017/09/01
- [Qemu-devel] [PULL 14/29] hppa: replace cpu_hppa_init() with cpu_generic_init(), Eduardo Habkost, 2017/09/01