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[Qemu-devel] [RFC v2 4/4] numa: pc: reset machine if numa config has cha
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [RFC v2 4/4] numa: pc: reset machine if numa config has changed in prelaunch time |
Date: |
Thu, 28 Dec 2017 18:22:59 +0100 |
Signed-off-by: Igor Mammedov <address@hidden>
---
include/hw/boards.h | 1 +
hw/core/machine.c | 2 +-
hw/i386/pc.c | 1 +
numa.c | 14 +++++++++++---
vl.c | 4 ++++
5 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 156b16f..9b3ec6a 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -62,6 +62,7 @@ MachineClass *find_default_machine(void);
extern MachineState *current_machine;
void machine_run_board_init(MachineState *machine);
+void machine_numa_finish_init(MachineState *machine);
bool machine_usb(MachineState *machine);
bool machine_kernel_irqchip_allowed(MachineState *machine);
bool machine_kernel_irqchip_required(MachineState *machine);
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 212dfec..120b7ca 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -701,7 +701,7 @@ static char *cpu_slot_to_string(const CPUArchId *cpu)
return g_string_free(s, false);
}
-static void machine_numa_finish_init(MachineState *machine)
+void machine_numa_finish_init(MachineState *machine)
{
int i;
bool default_mapping;
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 3fcf318..6c91554 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -2244,6 +2244,7 @@ static void pc_machine_reset(void)
CPUState *cs;
X86CPU *cpu;
+ parse_numa_opts(MACHINE(qdev_get_machine()));
qemu_devices_reset();
/* Reset APIC after devices have been reset to cancel
diff --git a/numa.c b/numa.c
index fd2bf1c..83eaaea 100644
--- a/numa.c
+++ b/numa.c
@@ -53,7 +53,7 @@ static int max_numa_nodeid; /* Highest specified NUMA node
ID, plus one.
int nb_numa_nodes;
bool have_numa_distance;
NodeInfo numa_info[MAX_NODES];
-
+static bool numa_inited;
static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
Error **errp)
@@ -173,6 +173,11 @@ void parse_NumaOptions(MachineState *ms, NumaOptions
*object, Error **errp)
{
Error *err = NULL;
+ if (numa_inited && runstate_check(RUN_STATE_PRELAUNCH)) {
+ qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP);
+ }
+ numa_inited = false;
+
switch (object->type) {
case NUMA_OPTIONS_TYPE_NODE:
parse_numa_node(ms, &object->u.node, &err);
@@ -352,9 +357,10 @@ void parse_numa_opts(MachineState *ms)
int i;
MachineClass *mc = MACHINE_GET_CLASS(ms);
- if (qemu_opts_foreach(qemu_find_opts("numa"), parse_numa, ms, NULL)) {
- exit(1);
+ if (numa_inited) {
+ return;
}
+ numa_inited = true;
/*
* If memory hotplug is enabled (slots > 0) but without '-numa'
@@ -439,6 +445,8 @@ void parse_numa_opts(MachineState *ms)
/* Validation succeeded, now fill in any missing distances. */
complete_init_numa_distance();
}
+
+ machine_numa_finish_init(ms);
}
}
diff --git a/vl.c b/vl.c
index d3a5c5d..9e00604 100644
--- a/vl.c
+++ b/vl.c
@@ -4690,6 +4690,10 @@ int main(int argc, char **argv, char **envp)
current_machine->boot_order = boot_order;
current_machine->cpu_model = cpu_model;
+ if (qemu_opts_foreach(qemu_find_opts("numa"), parse_numa,
+ current_machine, NULL)) {
+ exit(1);
+ }
parse_numa_opts(current_machine);
/* parse features once if machine provides default cpu_type */
--
2.7.4