[src/trunk]: src/doc update

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c75c0752232f
branches:  trunk
changeset: 450635:c75c0752232f
user:      maxv <maxv%NetBSD.org@localhost>
date:      Sun Apr 21 06:48:37 2019 +0000

description:
update

diffstat:

 doc/TODO.nvmm |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (15 lines):

diff -r c5068dacd5d5 -r c75c0752232f doc/TODO.nvmm
--- a/doc/TODO.nvmm     Sun Apr 21 06:46:03 2019 +0000
+++ b/doc/TODO.nvmm     Sun Apr 21 06:48:37 2019 +0000
@@ -2,8 +2,9 @@
 
 ====== KERNEL NVMM DRIVER ======
 
- * Currently you can't modunload NVMM while a VM is running, otherwise you hit
-   a panic. See TODO in nvmm_fini().
+ * 32bit-PAE guests can misbehave on Intel, because we need to manually
+   install the PDPTEs, and currently we don't do it. In practice they don't
+   misbehave because the emulator never has to interfere with CR3.
 
  * Maybe we will want a way to return to userland when the guest TPR changes.
    On Intel that's not complicated, but on old AMD CPUs, we need to disassemble