| commit | 6a65d560f496559af75d4ea183f3812352c313aa | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sat, 6 Jan 2018 07:53:47 +0000 (5 23:53 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sat, 6 Jan 2018 08:00:39 +0000 (6 00:00 -0800) | ||
| tree | 75ce5f7a8fb44b13c2bcce4bdd542bee19ef9564 | treesnapshot (tar.gz zip) |
| parent | 6d08986d6abb25d6e9e524c8cbefd3e513259531 | commitdiff |
kernel - Intel user/kernel separation MMU bug fix part 5
* Fix iretq fault handling. As I thought, I messed it up with
the trampoline patches. Fixing it involves issuing the correct
KMMU* macros to ensure that the code is on the correct stack
and has the correct mmu context.
Revalidate with a test program that uses a signal handler to
change the stack segment descriptor to something it shouldn't
be.
* Get rid of the "kernel trap 9..." console message for the iretq
fault case.
* Fix iretq fault handling. As I thought, I messed it up with
the trampoline patches. Fixing it involves issuing the correct
KMMU* macros to ensure that the code is on the correct stack
and has the correct mmu context.
Revalidate with a test program that uses a signal handler to
change the stack segment descriptor to something it shouldn't
be.
* Get rid of the "kernel trap 9..." console message for the iretq
fault case.