On Fri, 12 May 2023 15:20:36 +0800 Junxiao Chang <junxiao.chang@xxxxxxxxx> wrote: > hugetlb page usually is mapped with pmd, but occasionally it might be > mapped with pte. QEMU can use udma-buf to create host dmabufs for guest > framebuffers. When QEMU is launched with parameter "hugetlb=on", > udmabuffer driver maps hugetlb page with pte in page fault handler. Are there any other situations in which a hugetlb page is mapped in this fashion? If not, can QEMU be changed to map with a pmd? So we get one less weird special case in MM.
