On Tue, Aug 11, 2026, Jinyu Tang wrote:
> RISC-V now supports KVM_PRE_FAULT_MEMORY, so include the generic
> pre_fault_memory_test in the RISC-V KVM selftest build.
>
> The test uses PAGE_SIZE from the architecture processor header. Define
> the normal 4K RISC-V selftest page size so the generic test can build
> for RISC-V.
>
> RISC-V selects VM_MODE_DEFAULT at runtime. Initialize the supported
> guest modes before creating the VM so the generic test can run on
> RISC-V hosts where the default mode is discovered from KVM
> capabilities.
>
> Signed-off-by: Jinyu Tang <[email protected]>
> ---
...
> diff --git a/tools/testing/selftests/kvm/pre_fault_memory_test.c
> b/tools/testing/selftests/kvm/pre_fault_memory_test.c
> index a0fcae3cb7a8..6eebf0524673 100644
> --- a/tools/testing/selftests/kvm/pre_fault_memory_test.c
> +++ b/tools/testing/selftests/kvm/pre_fault_memory_test.c
> @@ -8,6 +8,7 @@
> #include <linux/sizes.h>
>
> #include <test_util.h>
> +#include <guest_modes.h>
> #include <kvm_util.h>
> #include <processor.h>
> #include <pthread.h>
> @@ -219,6 +220,8 @@ static void test_pre_fault_memory(unsigned long vm_type,
> bool private)
>
> int main(int argc, char *argv[])
> {
> + guest_modes_append_default();
Can we do this for all selftests in kvm_selftest_init()? Or perhaps even
better,
handle it in kvm_selftest_arch_init() to avoid the gnarly #ifdefs?
Unless there's a meaningful downside to configuring the supported and default
modes, I don't see any reason to force tests to manually do this work.
> +
> TEST_REQUIRE(kvm_check_cap(KVM_CAP_PRE_FAULT_MEMORY));
>
> test_pre_fault_memory(0, false);
> --
> 2.43.0
>
