I am trying to get the base address and the size of the GDT of the guest VM. When I read the value inside the Windows 7 64bit guest VM I get following values: gdt base 0xfffff80003b37000, gdt limit 0x7f. These values I read out with gdtr in kernel mode via a driver. However, when I read the value upon a VMEXIT (triggered by SYSCALL) in VMCB where all the values are stored, I get the following (different) values: gdt base 0xFFFFFFFFA03F8060, gdt limit 0x8060. I would expect the values to be identical. Is there some kind of translation/calculation that must be done to get the correct value? I read out the value as follows: vmcs_readl(GUEST_GDTR_BASE) vmcs_read32(GUEST_GDTR_LIMIT) I actually have the same issue with IDTR. However, I am only interested in GDTR. Reading out other registers like CR3, RIP, or RAX work fine. -- Juwo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
