Let's auto-enable it also when maxmem is specified but no slots are
defined. This will result in us properly creating ACPI srat tables,
indicating the maximum possible PFN to the guest OS. Based on this, e.g.,
Linux will enable the swiotlb properly.
This avoids having to manually force the switolb on (swiotlb=force) in
Linux in case we're booting only using DMA memory (e.g., 2GB on x86-64),
and virtio-mem adds memory later on that really needs the swiotlb to be
used for DMA.
Let's take care of backwards compatibility if somebody has a setup that
specifies "maxram" without "slots".
Reported-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Sergio Lopez <slp@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: qemu-arm@nongnu.org <qemu-arm@nongnu.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <
20200626072248.78761-22-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
hc->unplug = virt_machine_device_unplug_cb;
mc->nvdimm_supported = true;
mc->auto_enable_numa_with_memhp = true;
+ mc->auto_enable_numa_with_memdev = true;
mc->default_ram_id = "mach-virt.ram";
object_class_property_add(oc, "acpi", "OnOffAuto",
virt_machine_5_1_options(mc);
compat_props_add(mc->compat_props, hw_compat_5_0, hw_compat_5_0_len);
mc->numa_mem_supported = true;
+ mc->auto_enable_numa_with_memdev = false;
}
DEFINE_VIRT_MACHINE(5, 0)
NodeInfo *numa_info = ms->numa_state->nodes;
/*
- * If memory hotplug is enabled (slots > 0) but without '-numa'
- * options explicitly on CLI, guestes will break.
+ * If memory hotplug is enabled (slot > 0) or memory devices are enabled
+ * (ms->maxram_size > ram_size) but without '-numa' options explicitly on
+ * CLI, guests will break.
*
* Windows: won't enable memory hotplug without SRAT table at all
*
* assume there is just one node with whole RAM.
*/
if (ms->numa_state->num_nodes == 0 &&
- ((ms->ram_slots > 0 &&
- mc->auto_enable_numa_with_memhp) ||
- mc->auto_enable_numa)) {
+ ((ms->ram_slots && mc->auto_enable_numa_with_memhp) ||
+ (ms->maxram_size > ms->ram_size && mc->auto_enable_numa_with_memdev) ||
+ mc->auto_enable_numa)) {
NumaNodeOptions node = { };
parse_numa_node(ms, &node, &error_abort);
numa_info[0].node_mem = ram_size;
mc->max_cpus = 288;
mc->has_hotpluggable_cpus = false;
mc->auto_enable_numa_with_memhp = false;
+ mc->auto_enable_numa_with_memdev = false;
mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
mc->nvdimm_supported = false;
mc->default_ram_id = "microvm.ram";
mc->get_default_cpu_node_id = x86_get_default_cpu_node_id;
mc->possible_cpu_arch_ids = x86_possible_cpu_arch_ids;
mc->auto_enable_numa_with_memhp = true;
+ mc->auto_enable_numa_with_memdev = true;
mc->has_hotpluggable_cpus = true;
mc->default_boot_order = "cad";
mc->hot_add_cpu = pc_hot_add_cpu;
m->numa_mem_supported = true;
compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
+ m->auto_enable_numa_with_memdev = false;
}
DEFINE_I440FX_MACHINE(v5_0, "pc-i440fx-5.0", NULL,
m->numa_mem_supported = true;
compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
+ m->auto_enable_numa_with_memhp = false;
}
DEFINE_Q35_MACHINE(v5_0, "pc-q35-5.0", NULL,
const char **valid_cpu_types;
strList *allowed_dynamic_sysbus_devices;
bool auto_enable_numa_with_memhp;
+ bool auto_enable_numa_with_memdev;
void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
int nb_nodes, ram_addr_t size);
bool ignore_boot_device_suffixes;