kvmtool is often used for prototyping new features, and a developer might
not want to install it system-wide. Add a KVMTOOL environment variable to
make it easier for tests to use a binary not in $PATH.

Signed-off-by: Alexandru Elisei <redacted>
---
 run_tests.sh          | 1 +
 scripts/arch-run.bash | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/run_tests.sh b/run_tests.sh
index acaaadbb879b..d38954be9093 100755
--- a/run_tests.sh
+++ b/run_tests.sh

@@ -36,6 +36,7 @@ The following environment variables are used:
     TIMEOUT         Timeout duration for the timeout(1) command
     CHECK           Overwrites the 'check' unit test parameter (see
                     docs/unittests.txt)
+    KVMTOOL         Path to kvmtool binary for ARCH-run
 EOF
 }
 

diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index 34f633cade01..5d840b72f8cb 100644
--- a/scripts/arch-run.bash
+++ b/scripts/arch-run.bash

@@ -457,7 +457,7 @@ search_kvmtool_binary ()
 {
 	local kvmtoolcmd kvmtool
 
-	for kvmtoolcmd in lkvm vm lkvm-static; do
+	for kvmtoolcmd in ${KVMTOOL:-lkvm vm lkvm-static}; do
 		if $kvmtoolcmd --help 2>/dev/null| grep -q 'The most commonly used'; then
 			kvmtool="$kvmtoolcmd"
 			break