From 0be02a8fd37f3ffd27ccb82d2061d9bc70920035 Mon Sep 17 00:00:00 2001
From: Julio Montes <julio.montes@intel.com>
Date: Thu, 3 Sep 2020 14:00:01 -0500
Subject: [PATCH] runtime: qemu: reduce boot time and memory footprint

The linux kernel feature RANDOMIZE_BASE improved the security and at
the same time increased the memory footprint of a kata container,
this feature was enabled in kata-containers/packaging#1006.
In order to mitigate this increase in memory consumption, we can
boot container using the uncompressed kernel.

Reduce boot time by ~5%
Reduce KSM memory footprint by ~14%
Reduce noKSM memory footprint by ~27%

fixes #669

Signed-off-by: Julio Montes <julio.montes@intel.com>
---
 src/runtime/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/runtime/Makefile b/src/runtime/Makefile
index 6263910d43..768f76a691 100644
--- a/src/runtime/Makefile
+++ b/src/runtime/Makefile
@@ -239,6 +239,7 @@ ifneq (,$(QEMUCMD))
     # qemu-specific options (all should be suffixed by "_QEMU")
     DEFBLOCKSTORAGEDRIVER_QEMU := virtio-scsi
     DEFNETWORKMODEL_QEMU := tcfilter
+    KERNELTYPE = uncompressed
     KERNELNAME = $(call MAKE_KERNEL_NAME,$(KERNELTYPE))
     KERNELPATH = $(KERNELDIR)/$(KERNELNAME)
 endif