[I asked a similar question yesterday, but I'll try to phrase it more concisely now.]
Hello, I'd like to ask how I can modify protection bits of EPT page table entries. According to the Intel manual (Table 28-6, Volume 3C), bits 0, 1, 2 of an EPT entry indicate if a page is readable, writable, and executable, respectively. I'd like to clear bit 0, so effectively mark the page non-readable, and then be able to monitor read accesses to it (in vmx.c/handle_ept_violation()). I thought that an spte in kvm represents an EPT entry. However, mmu.c checks the PRESENT bit on an spte, e.g., __rmap_write_protect(), which would suggest that I completely misunderstand what's going on. Any help will be appreciated. Thanks a lot! Best, asia -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
