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[Qemu-devel] KQEMU: userspace updates of descriptor tables
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] KQEMU: userspace updates of descriptor tables |
Date: |
Tue, 03 Jun 2008 16:50:44 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Hi,
(my) question of the day: What happens to the KQEMU's shadow GDT and LDT
if the guest modifies their content (and not their locations) while QEMU
is running in emulator mode in userspace? I just enforced dt_changed=1
in update_dt_cache(), and this took me a few steps further in the
bring-up of our special guest OS under KQEMU.
In theory, this requires some flag in the kqemu_cpu_state to signal such
events down on KQEMU_EXEC - given userspace keeps track of all changes
already. Is there such a bit? Haven't looked into that details yet.
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
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