John Baldwin 753bcca440 riscv: Clear SUM in SSTATUS for supervisor mode exceptions. ... Previously, a page fault taken during copyin/out and related functions would run the entire fault handler while permitting direct access to user addresses. This could also leak across context switches (e.g. if the page fault handler was preempted by an interrupt or slept for disk I/O). To fix, clear SUM in assembly after saving the original version of SSTATUS in the supervisor mode trapframe. Reviewed by: mhorne, jrtc27 Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D29763		2021-04-21 13:57:04 -07:00
..
conf	Split out the NODEBUG options to a common file	2021-01-14 16:57:53 +00:00
include	Introduce kdb-level watchpoint functions	2021-03-29 12:05:43 -03:00
riscv	riscv: Clear SUM in SSTATUS for supervisor mode exceptions.	2021-04-21 13:57:04 -07:00
sifive	riscv: Fix build by using the correct device-tree include path	2021-01-16 11:31:39 +01:00