From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id B89FD65234 for ; Sun, 6 Mar 2022 13:47:26 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id AB021201C0 for ; Sun, 6 Mar 2022 13:46:56 +0100 (CET) Received: from bastionodiso.odiso.net (bastionodiso.odiso.net [185.151.191.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 6DF3D201A3 for ; Sun, 6 Mar 2022 13:46:55 +0100 (CET) Received: from kvmformation3.odiso.net (formationkvm3.odiso.net [10.3.94.12]) by bastionodiso.odiso.net (Postfix) with ESMTP id CC1B434AEF; Sun, 6 Mar 2022 13:46:48 +0100 (CET) Received: by kvmformation3.odiso.net (Postfix, from userid 0) id B0C911614AC; Sun, 6 Mar 2022 13:46:48 +0100 (CET) From: Alexandre Derumier To: pve-devel@lists.proxmox.com Date: Sun, 6 Mar 2022 13:46:46 +0100 Message-Id: <20220306124647.2267293-2-aderumier@odiso.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220306124647.2267293-1-aderumier@odiso.com> References: <20220306124647.2267293-1-aderumier@odiso.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.085 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% HEADER_FROM_DIFFERENT_DOMAINS 0.249 From and EnvelopeFrom 2nd level mail domains are different KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment KAM_LAZY_DOMAIN_SECURITY 1 Sending domain does not have any anti-forgery methods KAM_SHORT 0.001 Use of a URL Shortener for very short URL NO_DNS_FOR_FROM 0.001 Envelope sender has no MX or A DNS records SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_NONE 0.001 SPF: sender does not publish an SPF Record T_SCC_BODY_TEXT_LINE -0.01 - URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [linuxfoundation.org, lwn.net, qemuserver.pm] Subject: [pve-devel] [PATCH V2 qemu-server 1/2] enable balloon free-page-reporting X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Mar 2022 12:47:26 -0000 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 --- 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