tests/functional: convert tests to new uncompress helper

Replace use of lzma_uncompress and gzip_uncompress with the
new uncompress helper.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20241217155953.3950506-27-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

diff --git a/tests/functional/test_aarch64_raspi4.py b/tests/functional/test_aarch64_raspi4.py
index 3918e35e829060b389f2c6e1c9d63d54998ef5da..7a4302b0c5a49681c122039355177466d6e80b71 100755 (executable)
--- a/tests/functional/test_aarch64_raspi4.py
+++ b/tests/functional/test_aarch64_raspi4.py
@@ -7,7 +7,6 @@
 
 from qemu_test import LinuxKernelTest, Asset
 from qemu_test import exec_command_and_wait_for_pattern
-from qemu_test.utils import gzip_uncompress
 
 
 class Aarch64Raspi4Machine(LinuxKernelTest):
@@ -63,9 +62,7 @@ class Aarch64Raspi4Machine(LinuxKernelTest):
                                            member='boot/kernel8.img')
         dtb_path = self.archive_extract(self.ASSET_KERNEL_20190215,
                                         member='boot/bcm2711-rpi-4-b.dtb')
-        initrd_path_gz = self.ASSET_INITRD.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_INITRD)
 
         self.set_machine('raspi4b')
         self.vm.set_console()

diff --git a/tests/functional/test_aarch64_sbsaref.py b/tests/functional/test_aarch64_sbsaref.py
index 533ca6440795c84e88192dc296bae23a2fa9797a..2d756efdab48dee13a755110357bc627e54a566e 100755 (executable)
--- a/tests/functional/test_aarch64_sbsaref.py
+++ b/tests/functional/test_aarch64_sbsaref.py
@@ -11,7 +11,7 @@
 from qemu_test import QemuSystemTest, Asset
 from qemu_test import wait_for_console_pattern
 from qemu_test import interrupt_interactive_console_until_pattern
-from qemu_test.utils import lzma_uncompress
+
 
 def fetch_firmware(test):
     """
@@ -29,14 +29,10 @@ def fetch_firmware(test):
     """
 
     # Secure BootRom (TF-A code)
-    fs0_xz_path = Aarch64SbsarefMachine.ASSET_FLASH0.fetch()
-    fs0_path = test.scratch_file("SBSA_FLASH0.fd")
-    lzma_uncompress(fs0_xz_path, fs0_path)
+    fs0_path = test.uncompress(Aarch64SbsarefMachine.ASSET_FLASH0)
 
     # Non-secure rom (UEFI and EFI variables)
-    fs1_xz_path = Aarch64SbsarefMachine.ASSET_FLASH1.fetch()
-    fs1_path = test.scratch_file("SBSA_FLASH1.fd")
-    lzma_uncompress(fs1_xz_path, fs1_path)
+    fs1_path = test.uncompress(Aarch64SbsarefMachine.ASSET_FLASH1)
 
     for path in [fs0_path, fs1_path]:
         with open(path, "ab+") as fd:

diff --git a/tests/functional/test_alpha_clipper.py b/tests/functional/test_alpha_clipper.py
index 72cd7b57e6aa1ed061a96f6995c856038385b81e..c5d71819531529b1ed5c26d684889988741bed62 100755 (executable)
--- a/tests/functional/test_alpha_clipper.py
+++ b/tests/functional/test_alpha_clipper.py
@@ -6,7 +6,6 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
 from qemu_test import LinuxKernelTest, Asset
-from qemu_test.utils import gzip_uncompress
 
 
 class AlphaClipperTest(LinuxKernelTest):
@@ -20,8 +19,7 @@ class AlphaClipperTest(LinuxKernelTest):
         self.set_machine('clipper')
         kernel_path = self.ASSET_KERNEL.fetch()
 
-        uncompressed_kernel = self.scratch_file('vmlinux')
-        gzip_uncompress(kernel_path, uncompressed_kernel)
+        uncompressed_kernel = self.uncompress(self.ASSET_KERNEL, format="gz")
 
         self.vm.set_console()
         kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE + 'console=ttyS0'

diff --git a/tests/functional/test_arm_bpim2u.py b/tests/functional/test_arm_bpim2u.py
index 91c56b0930c33dd2d1ce69ed3b1f4eac49803ddf..12cd35974609cfd9967c5baa52d9e139f7979cf5 100755 (executable)
--- a/tests/functional/test_arm_bpim2u.py
+++ b/tests/functional/test_arm_bpim2u.py
@@ -10,7 +10,6 @@ import os
 from qemu_test import LinuxKernelTest, exec_command_and_wait_for_pattern
 from qemu_test import Asset, interrupt_interactive_console_until_pattern
 from qemu_test import skipBigDataTest
-from qemu_test.utils import gzip_uncompress, lzma_uncompress
 from qemu_test.utils import image_pow2ceil_expand
 
 
@@ -65,9 +64,7 @@ class BananaPiMachine(LinuxKernelTest):
         dtb_path = ('usr/lib/linux-image-6.6.16-current-sunxi/'
                     'sun8i-r40-bananapi-m2-ultra.dtb')
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
-        initrd_path_gz = self.ASSET_INITRD.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_INITRD)
 
         self.vm.set_console()
         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
@@ -103,9 +100,7 @@ class BananaPiMachine(LinuxKernelTest):
         dtb_path = ('usr/lib/linux-image-6.6.16-current-sunxi/'
                     'sun8i-r40-bananapi-m2-ultra.dtb')
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
-        rootfs_path_xz = self.ASSET_ROOTFS.fetch()
-        rootfs_path = self.scratch_file('rootfs.cpio')
-        lzma_uncompress(rootfs_path_xz, rootfs_path)
+        rootfs_path = self.uncompress(self.ASSET_ROOTFS)
         image_pow2ceil_expand(rootfs_path)
 
         self.vm.set_console()
@@ -147,9 +142,7 @@ class BananaPiMachine(LinuxKernelTest):
         self.set_machine('bpim2u')
         # This test download a 8.9 MiB compressed image and expand it
         # to 127 MiB.
-        image_path_gz = self.ASSET_SD_IMAGE.fetch()
-        image_path = self.scratch_file('sdcard.img')
-        gzip_uncompress(image_path_gz, image_path)
+        image_path = self.uncompress(self.ASSET_SD_IMAGE)
         image_pow2ceil_expand(image_path)
 
         self.vm.set_console()

diff --git a/tests/functional/test_arm_cubieboard.py b/tests/functional/test_arm_cubieboard.py
index 32db30325391b7616764f2eaef968f7ac1c7bcd0..423db710e82706bfc62615004b8e624621a8a6ca 100755 (executable)
--- a/tests/functional/test_arm_cubieboard.py
+++ b/tests/functional/test_arm_cubieboard.py
@@ -9,7 +9,7 @@ import os
 from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern
 from qemu_test import interrupt_interactive_console_until_pattern
 from qemu_test import skipBigDataTest
-from qemu_test.utils import gzip_uncompress, image_pow2ceil_expand
+from qemu_test.utils import image_pow2ceil_expand
 
 
 class CubieboardMachine(LinuxKernelTest):
@@ -43,9 +43,7 @@ class CubieboardMachine(LinuxKernelTest):
         dtb_path = ('usr/lib/linux-image-6.6.16-current-sunxi/' +
                     'sun4i-a10-cubieboard.dtb')
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
-        initrd_path_gz = self.ASSET_INITRD.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_INITRD)
 
         self.vm.set_console()
         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
@@ -77,9 +75,7 @@ class CubieboardMachine(LinuxKernelTest):
                     'sun4i-a10-cubieboard.dtb')
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
 
-        rootfs_path_gz = self.ASSET_SATA_ROOTFS.fetch()
-        rootfs_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(rootfs_path_gz, rootfs_path)
+        rootfs_path = self.uncompress(self.ASSET_SATA_ROOTFS)
 
         self.vm.set_console()
         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
@@ -111,9 +107,7 @@ class CubieboardMachine(LinuxKernelTest):
         # This test download a 7.5 MiB compressed image and expand it
         # to 126 MiB.
         self.set_machine('cubieboard')
-        image_path_gz = self.ASSET_OPENWRT.fetch()
-        image_path = self.scratch_file('sdcard.img')
-        gzip_uncompress(image_path_gz, image_path)
+        image_path = self.uncompress(self.ASSET_OPENWRT)
         image_pow2ceil_expand(image_path)
 
         self.vm.set_console()

diff --git a/tests/functional/test_arm_orangepi.py b/tests/functional/test_arm_orangepi.py
index aa2d9d19a4a8b4a1efb24d78e5be8479e63720ce..18ee50216bb358c43a511427efc61e16859586d8 100755 (executable)
--- a/tests/functional/test_arm_orangepi.py
+++ b/tests/functional/test_arm_orangepi.py
@@ -11,7 +11,6 @@ import shutil
 from qemu_test import LinuxKernelTest, exec_command_and_wait_for_pattern
 from qemu_test import Asset, interrupt_interactive_console_until_pattern
 from qemu_test import wait_for_console_pattern, skipBigDataTest
-from qemu_test.utils import gzip_uncompress, lzma_uncompress
 from qemu_test.utils import image_pow2ceil_expand
 
 
@@ -76,9 +75,7 @@ class BananaPiMachine(LinuxKernelTest):
         dtb_path = ('usr/lib/linux-image-6.6.16-current-sunxi/' +
                     'sun8i-h3-orangepi-pc.dtb')
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
-        initrd_path_gz = self.ASSET_INITRD.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_INITRD)
 
         self.vm.set_console()
         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
@@ -112,9 +109,7 @@ class BananaPiMachine(LinuxKernelTest):
         dtb_path = ('usr/lib/linux-image-6.6.16-current-sunxi/' +
                     'sun8i-h3-orangepi-pc.dtb')
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
-        rootfs_path_xz = self.ASSET_ROOTFS.fetch()
-        rootfs_path = self.scratch_file('rootfs.cpio')
-        lzma_uncompress(rootfs_path_xz, rootfs_path)
+        rootfs_path = self.uncompress(self.ASSET_ROOTFS)
         image_pow2ceil_expand(rootfs_path)
 
         self.vm.set_console()
@@ -155,9 +150,7 @@ class BananaPiMachine(LinuxKernelTest):
         # This test download a 275 MiB compressed image and expand it
         # to 1036 MiB, but the underlying filesystem is 1552 MiB...
         # As we expand it to 2 GiB we are safe.
-        image_path_xz = self.ASSET_ARMBIAN.fetch()
-        image_path = self.scratch_file('armbian.img')
-        lzma_uncompress(image_path_xz, image_path)
+        image_path = self.uncompress(self.ASSET_ARMBIAN)
         image_pow2ceil_expand(image_path)
 
         self.vm.set_console()
@@ -195,9 +188,7 @@ class BananaPiMachine(LinuxKernelTest):
         # before to boot NetBSD.
         uboot_path = 'usr/lib/u-boot/orangepi_plus/u-boot-sunxi-with-spl.bin'
         uboot_path = self.archive_extract(self.ASSET_UBOOT, member=uboot_path)
-        image_path_gz = self.ASSET_NETBSD.fetch()
-        image_path = self.scratch_file('armv7.img')
-        gzip_uncompress(image_path_gz, image_path)
+        image_path = self.uncompress(self.ASSET_NETBSD)
         image_pow2ceil_expand(image_path)
         image_drive_args = 'if=sd,format=raw,snapshot=on,file=' + image_path
 

diff --git a/tests/functional/test_arm_raspi2.py b/tests/functional/test_arm_raspi2.py
index 5e38d1a9370626df20299c3fbff00ec3b63b482d..d3c7aaa39b076c3eb57013887f218733462fc852 100755 (executable)
--- a/tests/functional/test_arm_raspi2.py
+++ b/tests/functional/test_arm_raspi2.py
@@ -9,7 +9,6 @@
 
 from qemu_test import LinuxKernelTest, Asset
 from qemu_test import exec_command_and_wait_for_pattern
-from qemu_test.utils import gzip_uncompress
 
 
 class ArmRaspi2Machine(LinuxKernelTest):
@@ -64,9 +63,7 @@ class ArmRaspi2Machine(LinuxKernelTest):
                                            member='boot/kernel7.img')
         dtb_path = self.archive_extract(self.ASSET_KERNEL_20190215,
                                         member='boot/bcm2709-rpi-2-b.dtb')
-        initrd_path_gz = self.ASSET_INITRD.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_INITRD)
 
         self.set_machine('raspi2b')
         self.vm.set_console()

diff --git a/tests/functional/test_arm_smdkc210.py b/tests/functional/test_arm_smdkc210.py
index f4e86f7e2bc524542c33c37a1def13b2cf54eaca..0fda45c63a84a2919f62e87e1c3fca433f0bbfcc 100755 (executable)
--- a/tests/functional/test_arm_smdkc210.py
+++ b/tests/functional/test_arm_smdkc210.py
@@ -7,7 +7,7 @@
 import os
 
 from qemu_test import LinuxKernelTest, Asset
-from qemu_test.utils import gzip_uncompress
+
 
 class Smdkc210Machine(LinuxKernelTest):
 
@@ -30,9 +30,7 @@ class Smdkc210Machine(LinuxKernelTest):
         dtb_path = 'usr/lib/linux-image-4.19.0-6-armmp/exynos4210-smdkv310.dtb'
         dtb_path = self.archive_extract(self.ASSET_DEB, member=dtb_path)
 
-        initrd_path_gz = self.ASSET_ROOTFS.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_ROOTFS)
 
         self.vm.set_console()
         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +

diff --git a/tests/functional/test_mips64el_malta.py b/tests/functional/test_mips64el_malta.py
index 39fafb8bf1497e86ff5d936729ccfb0f06cb5f03..a8da15a26b345eedceab3dff3c33455b63f29a5a 100755 (executable)
--- a/tests/functional/test_mips64el_malta.py
+++ b/tests/functional/test_mips64el_malta.py
@@ -15,7 +15,6 @@ import logging
 from qemu_test import LinuxKernelTest, Asset
 from qemu_test import exec_command_and_wait_for_pattern
 from qemu_test import skipIfMissingImports, skipFlakyTest, skipUntrustedTest
-from qemu_test.utils import gzip_uncompress
 
 
 class MaltaMachineConsole(LinuxKernelTest):
@@ -67,9 +66,7 @@ class MaltaMachineConsole(LinuxKernelTest):
     @skipUntrustedTest()
     def test_mips64el_malta_5KEc_cpio(self):
         kernel_path = self.ASSET_KERNEL_3_19_3.fetch()
-        initrd_path_gz = self.ASSET_CPIO_R1.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_CPIO_R1)
 
         self.set_machine('malta')
         self.vm.set_console()
@@ -119,9 +116,7 @@ class MaltaMachineFramebuffer(LinuxKernelTest):
 
         screendump_path = self.scratch_file('screendump.pbm')
 
-        kernel_path_gz = self.ASSET_KERNEL_4_7_0.fetch()
-        kernel_path = self.scratch_file("vmlinux")
-        gzip_uncompress(kernel_path_gz, kernel_path)
+        kernel_path = self.uncompress(self.ASSET_KERNEL_4_7_0)
 
         tuxlogo_path = self.ASSET_TUXLOGO.fetch()
 

diff --git a/tests/functional/test_mips_malta.py b/tests/functional/test_mips_malta.py
index 6ab6c0832a35eca6777d34b3c3e50ba8c6bdb827..3b15038d89bfd324e348f56eec46213e59c75994 100755 (executable)
--- a/tests/functional/test_mips_malta.py
+++ b/tests/functional/test_mips_malta.py
@@ -8,7 +8,6 @@
 
 from qemu_test import LinuxKernelTest, Asset
 from qemu_test import exec_command_and_wait_for_pattern
-from qemu_test.utils import gzip_uncompress
 
 
 class MaltaMachineConsole(LinuxKernelTest):
@@ -49,9 +48,7 @@ class MaltaMachineConsole(LinuxKernelTest):
         kernel_path = self.archive_extract(
             self.ASSET_KERNEL_4_5_0,
             member='boot/vmlinux-4.5.0-2-4kc-malta')
-        initrd_path_gz = self.ASSET_INITRD.fetch()
-        initrd_path = self.scratch_file('rootfs.cpio')
-        gzip_uncompress(initrd_path_gz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_INITRD)
 
         self.set_machine('malta')
         self.vm.set_console()

diff --git a/tests/functional/test_mipsel_malta.py b/tests/functional/test_mipsel_malta.py
index 1f44881c784f19444604cbbcbef21ee4d0833165..fe9c3a172e61da873d6dfee6c51e85402f94a9b4 100755 (executable)
--- a/tests/functional/test_mipsel_malta.py
+++ b/tests/functional/test_mipsel_malta.py
@@ -12,7 +12,6 @@
 from qemu_test import QemuSystemTest, LinuxKernelTest, Asset
 from qemu_test import interrupt_interactive_console_until_pattern
 from qemu_test import wait_for_console_pattern
-from qemu_test.utils import lzma_uncompress
 
 
 class MaltaMachineConsole(LinuxKernelTest):
@@ -33,9 +32,8 @@ class MaltaMachineConsole(LinuxKernelTest):
          'generic_nano32r6el_page64k_dbg.xz'),
         'ce21ff4b07a981ecb8a39db2876616f5a2473eb2ab459c6f67465b9914b0c6b6')
 
-    def do_test_mips_malta32el_nanomips(self, kernel_path_xz):
-        kernel_path = self.scratch_file('kernel')
-        lzma_uncompress(kernel_path_xz, kernel_path)
+    def do_test_mips_malta32el_nanomips(self, kernel):
+        kernel_path = self.uncompress(kernel)
 
         self.set_machine('malta')
         self.vm.set_console()
@@ -51,16 +49,13 @@ class MaltaMachineConsole(LinuxKernelTest):
         self.wait_for_console_pattern(console_pattern)
 
     def test_mips_malta32el_nanomips_4k(self):
-        kernel_path_xz = self.ASSET_KERNEL_4K.fetch()
-        self.do_test_mips_malta32el_nanomips(kernel_path_xz)
+        self.do_test_mips_malta32el_nanomips(self.ASSET_KERNEL_4K)
 
     def test_mips_malta32el_nanomips_16k_up(self):
-        kernel_path_xz = self.ASSET_KERNEL_16K.fetch()
-        self.do_test_mips_malta32el_nanomips(kernel_path_xz)
+        self.do_test_mips_malta32el_nanomips(self.ASSET_KERNEL_16K)
 
     def test_mips_malta32el_nanomips_64k_dbg(self):
-        kernel_path_xz = self.ASSET_KERNEL_16K.fetch()
-        self.do_test_mips_malta32el_nanomips(kernel_path_xz)
+        self.do_test_mips_malta32el_nanomips(self.ASSET_KERNEL_64K)
 
 
 class MaltaMachineYAMON(QemuSystemTest):

diff --git a/tests/functional/test_rx_gdbsim.py b/tests/functional/test_rx_gdbsim.py
index b0adb38a45b331e8a3d5b8f8d751e0e8961ebbb6..20623aa51c90076e72c47a726c5feda3380e1cf1 100755 (executable)
--- a/tests/functional/test_rx_gdbsim.py
+++ b/tests/functional/test_rx_gdbsim.py
@@ -13,7 +13,6 @@
 from qemu_test import QemuSystemTest, Asset
 from qemu_test import exec_command_and_wait_for_pattern
 from qemu_test import wait_for_console_pattern, skipFlakyTest
-from qemu_test.utils import gzip_uncompress
 
 
 class RxGdbSimMachine(QemuSystemTest):
@@ -37,9 +36,7 @@ class RxGdbSimMachine(QemuSystemTest):
         """
         self.set_machine('gdbsim-r5f562n8')
 
-        uboot_path_gz = self.ASSET_UBOOT.fetch()
-        uboot_path = self.scratch_file('u-boot.bin')
-        gzip_uncompress(uboot_path_gz, uboot_path)
+        uboot_path = self.uncompress(self.ASSET_UBOOT)
 
         self.vm.set_console()
         self.vm.add_args('-bios', uboot_path,

diff --git a/tests/functional/test_s390x_ccw_virtio.py b/tests/functional/test_s390x_ccw_virtio.py
index e5884a4dd02dde7c0267ef7869d9fdbc92bb4f9f..453711aa0f5e478788d696317420957f0df0ac12 100755 (executable)
--- a/tests/functional/test_s390x_ccw_virtio.py
+++ b/tests/functional/test_s390x_ccw_virtio.py
@@ -17,7 +17,7 @@ import tempfile
 from qemu_test import QemuSystemTest, Asset
 from qemu_test import exec_command_and_wait_for_pattern
 from qemu_test import wait_for_console_pattern
-from qemu_test.utils import lzma_uncompress
+
 
 class S390CCWVirtioMachine(QemuSystemTest):
     KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
@@ -174,9 +174,7 @@ class S390CCWVirtioMachine(QemuSystemTest):
 
         kernel_path = self.ASSET_F31_KERNEL.fetch()
 
-        initrd_path_xz = self.ASSET_F31_INITRD.fetch()
-        initrd_path = self.scratch_file('initrd-raw.img')
-        lzma_uncompress(initrd_path_xz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_F31_INITRD, format="xz")
 
         self.vm.set_console()
         kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE + ' audit=0 '

diff --git a/tests/functional/test_s390x_topology.py b/tests/functional/test_s390x_topology.py
index 82acff4e553487ec814ab2e4495085d44cfb59f1..eefd9729cb23c6cb7cb484bb42725297d3f2ebd5 100755 (executable)
--- a/tests/functional/test_s390x_topology.py
+++ b/tests/functional/test_s390x_topology.py
@@ -14,7 +14,6 @@ from qemu_test import QemuSystemTest, Asset
 from qemu_test import exec_command
 from qemu_test import exec_command_and_wait_for_pattern
 from qemu_test import wait_for_console_pattern
-from qemu_test.utils import lzma_uncompress
 
 
 class S390CPUTopology(QemuSystemTest):
@@ -86,9 +85,7 @@ class S390CPUTopology(QemuSystemTest):
         """
         self.require_accelerator("kvm")
         kernel_path = self.ASSET_F35_KERNEL.fetch()
-        initrd_path_xz = self.ASSET_F35_INITRD.fetch()
-        initrd_path = self.scratch_file('initrd-raw.img')
-        lzma_uncompress(initrd_path_xz, initrd_path)
+        initrd_path = self.uncompress(self.ASSET_F35_INITRD, format="xz")
 
         self.vm.set_console()
         kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE