[PATCH 4/5] automation: improve checking for MSI/MSI-X in PCI passthrough tests

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

Checking /proc/interrupts is unreliable because different drivers set
different names there. Install pciutils and use lspci instead.
In fact, the /proc/interrupts content was confusing enough that
adl-pci-hvm had it wrong (MSI-X is in use there). Fix this too.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
---
 automation/gitlab-ci/test.yaml                    |  2 +--
 automation/scripts/qubes-x86-64.sh                | 19 +++++-----------
 automation/tests-artifacts/alpine/3.18.dockerfile |  1 +-
 3 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/automation/gitlab-ci/test.yaml b/automation/gitlab-ci/test.yaml
index 4b836bf04784..61e642cce0cc 100644
--- a/automation/gitlab-ci/test.yaml
+++ b/automation/gitlab-ci/test.yaml
@@ -195,8 +195,6 @@ adl-pci-pv-x86-64-gcc-debug:
 
 adl-pci-hvm-x86-64-gcc-debug:
   extends: .adl-x86-64
-  variables:
-    PCIDEV_INTR: "MSI"
   script:
     - ./automation/scripts/qubes-x86-64.sh pci-hvm 2>&1 | tee ${LOGFILE}
   needs:
diff --git a/automation/scripts/qubes-x86-64.sh 
b/automation/scripts/qubes-x86-64.sh
index 5464d10fc343..842e6fae7204 100755
--- a/automation/scripts/qubes-x86-64.sh
+++ b/automation/scripts/qubes-x86-64.sh
@@ -90,23 +90,18 @@ on_reboot = "destroy"
 
     domU_check="
 set -x -e
-ip link set eth0 up
-timeout 30s udhcpc -i eth0
+interface=eth0
+ip link set \"\$interface\" up
+timeout 30s udhcpc -i \"\$interface\"
 pingip=\$(ip -o -4 r show default|cut -f 3 -d ' ')
 ping -c 10 \"\$pingip\"
 echo domU started
-cat /proc/interrupts
+pcidevice=\$(basename \$(readlink /sys/class/net/\$interface/device))
+lspci -vs \$pcidevice
 "
-    if [ "$PCIDEV_INTR" = "MSI-X" ]; then
+    if [ -n "$PCIDEV_INTR" ]; then
         domU_check="$domU_check
-grep -- '\\(-msi-x\\|PCI-MSI-X\\).*eth0' /proc/interrupts
-"
-    elif [ "$PCIDEV_INTR" = "MSI" ]; then
-        # depending on the kernel version and domain type, the MSI can be
-        # marked as '-msi', 'PCI-MSI', or 'PCI-MSI-<SBDF>'; be careful to not 
match
-        # -msi-x nor PCI-MSI-X
-        domU_check="$domU_check
-grep -- '\\(-msi \\|PCI-MSI\\( \\|-[^X]\\)\\).*eth0' /proc/interrupts
+lspci -vs \$pcidevice | fgrep '$PCIDEV_INTR: Enable+'
 "
     fi
     domU_check="$domU_check
diff --git a/automation/tests-artifacts/alpine/3.18.dockerfile 
b/automation/tests-artifacts/alpine/3.18.dockerfile
index 333951d05e84..5f521572b8fb 100644
--- a/automation/tests-artifacts/alpine/3.18.dockerfile
+++ b/automation/tests-artifacts/alpine/3.18.dockerfile
@@ -33,6 +33,7 @@ RUN \
   apk add pixman && \
   apk add curl && \
   apk add udev && \
+  apk add pciutils && \
   \
   # Xen
   cd / && \
-- 
git-series 0.9.1