From: Alexandre Derumier <aderumier@odiso.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH V2 qemu-server 1/2] enable balloon free-page-reporting
Date: Sun, 6 Mar 2022 13:46:46 +0100 [thread overview]
Message-ID: <20220306124647.2267293-2-aderumier@odiso.com> (raw)
In-Reply-To: <20220306124647.2267293-1-aderumier@odiso.com>
Allow balloon device driver to report hints of guest free pages to the host,
for auto memory reclaim
https://lwn.net/Articles/759413/
https://events19.linuxfoundation.org/wp-content/uploads/2017/12/KVMForum2018.pdf
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
---
PVE/QemuServer.pm | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 42f0fbd..a9e86b3 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -3846,7 +3846,9 @@ sub config_to_command {
# enable balloon by default, unless explicitly disabled
if (!defined($conf->{balloon}) || $conf->{balloon}) {
my $pciaddr = print_pci_addr("balloon0", $bridges, $arch, $machine_type);
- push @$devices, '-device', "virtio-balloon-pci,id=balloon0$pciaddr";
+ my $ballooncmd = "virtio-balloon-pci,id=balloon0$pciaddr";
+ $ballooncmd .= ",free-page-reporting=on" if min_version($machine_version, 6, 2);
+ push @$devices, '-device', $ballooncmd;
}
if ($conf->{watchdog}) {
--
2.30.2
next prev parent reply other threads:[~2022-03-06 12:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-06 12:46 [pve-devel] [PATCH V2 qemu-server 0/2] " Alexandre Derumier
2022-03-06 12:46 ` Alexandre Derumier [this message]
2022-03-16 17:48 ` [pve-devel] [PATCH V2 qemu-server 1/2] " Thomas Lamprecht
2022-03-16 19:32 ` DERUMIER, Alexandre
2022-03-17 8:35 ` Thomas Lamprecht
2022-03-28 10:06 ` DERUMIER, Alexandre
2022-03-06 12:46 ` [pve-devel] [PATCH V2 qemu-server 2/2] add test for virtio-balloon free-page-reporting=on. (qemu 6.2) Alexandre Derumier
2022-04-27 9:23 ` [pve-devel] applied: [PATCH V2 qemu-server 0/2] enable balloon free-page-reporting Thomas Lamprecht
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