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kvm_page_table_test can already exercise hugetlb-backed guest memory, but it always creates the test memslot with GPA alignment matching the hugetlb backing size. That misses the case where a valid hugetlb memslot is later moved so that the memslot GPA and HVA no longer have the same offset within the backing huge page. Add a -u option that moves the test memslot GPA by one guest page after creating the hugetlb memslot. The memslot is created through the normal helper first, so the backing allocation remains valid and hugetlb aligned. Moving the memslot then creates a deliberate HVA/GPA offset mismatch before the guest mapping is installed. This mode is useful for checking that architecture MMUs do not install a block mapping when the block would map the wrong host pages or cover memory outside the memslot. The option is restricted to hugetlb-backed test memory because it's specifically about hugetlb block mapping eligibility. Signed-off-by: Jinyu Tang <tjytimi@163.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20260604142602.3582602-3-tjytimi@163.com Signed-off-by: Anup Patel <anup@brainfault.org> |
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| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
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| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pcmcia | ||
| perf | ||
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| rcu | ||
| sched | ||
| sched_ext | ||
| scripts | ||
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| testing | ||
| thermal | ||
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| unittests | ||
| usb | ||
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| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||