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runtime-rs: db: Change config enable_balloon_f_reporting

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Change config enable_balloon_f_reporting of db to
reclaim_guest_freed_memory.

Signed-off-by: Hui Zhu <teawater@antgroup.com>
This commit is contained in:
Hui Zhu
2025-01-21 10:28:19 +08:00
parent 42f5ef9ff1
commit 8f550de88a
4 changed files with 11 additions and 7 deletions
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2
src/libs/kata-types/src/config/hypervisor/mod.rs
View File

@@ -499,7 +499,7 @@ pub struct DeviceInfo {
///
/// Enabling this will result in the VM balloon device having f_reporting=on set
#[serde(default)]
pub enable_balloon_f_reporting: bool,
pub reclaim_guest_freed_memory: bool,
}
impl DeviceInfo {

10
src/runtime-rs/config/configuration-dragonball.toml.in
View File

@@ -98,11 +98,15 @@ default_maxvcpus = @DEFMAXVCPUS_DB@
# > 5 --> will be set to 5
default_bridges = @DEFBRIDGES@
# Enable balloon f_reporting
# Enabling this will result in the VM balloon device having f_reporting=on set
# Reclaim guest freed memory.
# Enabling this will result in the VM balloon device having f_reporting=on set.
# Then the hypervisor will use it to reclaim guest freed memory.
# This is useful for reducing the amount of memory used by a VM.
# Enabling this feature may sometimes reduce the speed of memory access in
# the VM.
#
# Default false
#enable_balloon_f_reporting = true
#reclaim_guest_freed_memory = true
# Default memory size in MiB for SB/VM.
# If unspecified then it will be set @DEFMEMSZ@ MiB.

4
src/runtime-rs/crates/hypervisor/src/dragonball/inner.rs
View File

@@ -430,7 +430,7 @@ impl DragonballInner {
use_shared_irq: None,
use_generic_irq: None,
f_deflate_on_oom: false,
f_reporting: self.config.device_info.enable_balloon_f_reporting,
f_reporting: self.config.device_info.reclaim_guest_freed_memory,
};
self.vmm_instance
.insert_balloon_device(balloon_config)
@@ -462,7 +462,7 @@ impl DragonballInner {
use_shared_irq: None,
use_generic_irq: None,
f_deflate_on_oom: false,
f_reporting: self.config.device_info.enable_balloon_f_reporting,
f_reporting: self.config.device_info.reclaim_guest_freed_memory,
};
self.balloon_size = had_mem_mb - new_mem_mb;
self.vmm_instance

2
src/runtime-rs/crates/hypervisor/src/dragonball/mod.rs
View File

@@ -85,7 +85,7 @@ impl Hypervisor for Dragonball {
let mut inner = self.inner.write().await;
let ret = inner.start_vm(timeout).await;
if ret.is_ok() && inner.config.device_info.enable_balloon_f_reporting {
if ret.is_ok() && inner.config.device_info.reclaim_guest_freed_memory {
// The virtio-balloon device must be inserted into dragonball and
// recognized by the guest kernel only after the dragonball upcall is ready.
// The dragonball upcall is not ready immediately after the VM starts,