qubes-installer-qubes-os/anaconda/0024-anaconda-limit-dom0-maxmem-to-4GB-to-limit-its-overh.patch

From 8aa4e95d549833bb481fad948ff241838cc02dcf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Fri, 19 Oct 2018 08:02:12 +0200
Subject: [PATCH] anaconda: limit dom0 maxmem to 4GB to limit its overhead on
 big systems
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Linux kernel have some memory overhead depending on maxmem. Dom0 isn't meant to use that much memory (most should be assigned to AppVMs), so on big systems this will be pure waste.

QubesOS/qubes-issues#1136
Fixes QubesOS/qubes-issues#1313

Signed-off-by: Frédéric Pierret <frederic.epitre@orange.fr>
---
 pyanaconda/bootloader.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyanaconda/bootloader.py b/pyanaconda/bootloader.py
index e726517fe..26a48fc7a 100644
--- a/pyanaconda/bootloader.py
+++ b/pyanaconda/bootloader.py
@@ -1504,7 +1504,7 @@ class GRUB2(GRUB):
         # boot arguments
         log.info("bootloader.py: used boot args: %s ", self.boot_args)
         defaults.write("GRUB_CMDLINE_LINUX=\"%s\"\n" % self.boot_args)
-        defaults.write("GRUB_CMDLINE_XEN_DEFAULT=\"console=none dom0_mem=min:1024M\"\n")
+        defaults.write("GRUB_CMDLINE_XEN_DEFAULT=\"console=none dom0_mem=min:1024M dom0_mem=max:4096M\"\n")
         defaults.write("GRUB_DISABLE_RECOVERY=\"true\"\n")
         defaults.write("GRUB_THEME=\"/boot/grub2/themes/system/theme.txt\"\n")
         defaults.close()
-- 
2.14.4