From: George Guo <dongtai.guo@linux.dev>
To: rppt@kernel.org, pasha.tatashin@soleen.com, pratyush@kernel.org,
chenhuacai@kernel.org, ardb@kernel.org, shuah@kernel.org
Cc: ilias.apalodimas@linaro.org, akpm@linux-foundation.org,
baoquan.he@linux.dev, ruirui.yang@linux.dev,
guodongtai@kylinos.cn, kernel@xen0n.name, graf@amazon.com,
liukexin@kylinos.cn, loongarch@lists.linux.dev,
linux-kernel@vger.kernel.org, kexec@lists.infradead.org,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
linux-efi@vger.kernel.org
Subject: [PATCH v6 7/8] selftests/kho: Add LoongArch vmtest support
Date: Fri, 30 Oct 2026 02:29:54 +0900 [thread overview]
Message-ID: <20261029172956.20791-8-dongtai.guo@linux.dev> (raw)
In-Reply-To: <20261029172956.20791-1-dongtai.guo@linux.dev>
From: George Guo <guodongtai@kylinos.cn>
Add loongarch.conf to run the test on QEMU's LoongArch virtual machine
with a la464 CPU and an 8250 serial console, and let vmtest.sh accept
the loongarch64 target.
Boot vmlinux.efi through EFI firmware. The EFI stub installs the KHO EFI
table, and QEMU's direct kernel boot would skip the stub. QEMU_EFI
defaults to /usr/share/edk2/loongarch64/QEMU_EFI.fd and can be set for
distributions that install the firmware elsewhere, such as Debian's
qemu-efi-loongarch64 package.
QEMU's LoongArch virtual machine has no i8042 controller. Enable the
generic PCI host so its I/O space is mapped before the i8042 fallback
probe touches the legacy ports. This keeps i8042 enabled, so the same
kernel configuration still works on real hardware.
Enable ACPI_SPCR_TABLE so the bare earlycon parameter gets the UART from
the SPCR table installed by EDK2. Unlike x86, LoongArch does not enable
it by default, and without it there is no early console and vmtest sees
no early boot output.
The KHO vmtest needs CONFIG_DEFERRED_STRUCT_PAGE_INIT=y, which depends
on SPARSEMEM, so select CONFIG_SPARSEMEM_MANUAL=y.
Co-developed-by: Kexin Liu <liukexin@kylinos.cn>
Signed-off-by: Kexin Liu <liukexin@kylinos.cn>
Signed-off-by: George Guo <guodongtai@kylinos.cn>
---
tools/testing/selftests/kho/loongarch.conf | 11 +++++++++++
tools/testing/selftests/kho/vmtest.sh | 3 ++-
2 files changed, 13 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/kho/loongarch.conf
diff --git a/tools/testing/selftests/kho/loongarch.conf b/tools/testing/selftests/kho/loongarch.conf
new file mode 100644
index 000000000000..36153b03c4ef
--- /dev/null
+++ b/tools/testing/selftests/kho/loongarch.conf
@@ -0,0 +1,11 @@
+QEMU_EFI="${QEMU_EFI:-/usr/share/edk2/loongarch64/QEMU_EFI.fd}"
+QEMU_CMD="qemu-system-loongarch64 -M virt -cpu la464 -bios $QEMU_EFI"
+QEMU_KCONFIG="
+CONFIG_ACPI_SPCR_TABLE=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SPARSEMEM_MANUAL=y
+"
+KERNEL_IMAGE="vmlinux.efi"
+KERNEL_CMDLINE="console=ttyS0 earlycon"
diff --git a/tools/testing/selftests/kho/vmtest.sh b/tools/testing/selftests/kho/vmtest.sh
index 0014bd76e88d..d05ba0734b25 100755
--- a/tools/testing/selftests/kho/vmtest.sh
+++ b/tools/testing/selftests/kho/vmtest.sh
@@ -21,7 +21,7 @@ Options:
-d) path to the kernel build directory
-j) number of jobs for compilation, similar to -j in make
-t) run test for target_arch, requires CROSS_COMPILE set
- supported targets: aarch64, x86_64
+ supported targets: aarch64, loongarch64, x86_64
-h) display this help
EOF
}
@@ -126,6 +126,7 @@ function target_to_arch() {
case $target in
aarch64) echo "arm64" ;;
+ loongarch64) echo "loongarch" ;;
x86_64) echo "x86" ;;
*) skip "architecture $target is not supported"
esac
--
2.53.0
next prev parent reply other threads:[~2026-10-29 17:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-29 17:29 [PATCH v6 0/8] LoongArch: Add KHO support and selftests George Guo
2026-10-29 17:29 ` [PATCH v6 1/8] efi: Pass KHO state to the next kernel in a configuration table George Guo
2026-10-29 19:28 ` Ard Biesheuvel
2026-10-29 19:42 ` Pratyush Yadav
2026-10-29 17:29 ` [PATCH v6 2/8] kho: Write KHO state to the EFI table at kexec time George Guo
2026-10-29 17:29 ` [PATCH v6 3/8] kho: Include linux/mm.h in kho_block.c George Guo
2026-10-29 17:29 ` [PATCH v6 4/8] kho: Add kho_disable() George Guo
2026-10-29 17:29 ` [PATCH v6 5/8] LoongArch: Allow memblock arrays to resize George Guo
2026-10-29 17:29 ` [PATCH v6 6/8] LoongArch: Enable kexec handover (KHO) George Guo
2026-10-29 17:29 ` George Guo [this message]
2026-10-29 17:29 ` [PATCH v6 8/8] selftests/liveupdate: Add LoongArch vmtest support George Guo
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