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System lag after turning on ept #37

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1401199262 opened this issue Sep 13, 2023 · 1 comment

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1401199262 commented Sep 13, 2023

The system becomes lag after turning on ept.
CPU i9-13980HX with 32GB memory and I set ept_pd_count = 512;

after I splited the first 2mb physical memory into small page, this problem seems not to appear, maybe it's related to MMIO.

I simply add get_ept_pte(ept, 0, true); at
prepare_ept(vcpu_ept_data& ept)
or reconstruct the first 2mb large page to small page.

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jonomango commented Sep 20, 2023

Thats actually pretty interesting, thanks. I have something similar on my TODO list already, but haven't gotten around to implementing it yet... https://github.com/jonomango/hv/blob/main/hv/ept.cpp#L42-L44.

jonomango added the enhancement label

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