diff options
Diffstat (limited to 'sys/amd64/amd64/trap.c')
| -rw-r--r-- | sys/amd64/amd64/trap.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/sys/amd64/amd64/trap.c b/sys/amd64/amd64/trap.c index 703d48d..83c83b4 100644 --- a/sys/amd64/amd64/trap.c +++ b/sys/amd64/amd64/trap.c @@ -522,24 +522,24 @@ kernel_trap: frame.tf_eflags &= ~PSL_T; return; } - /* - * Ignore debug register trace traps due to - * accesses in the user's address space, which - * can happen under several conditions such as - * if a user sets a watchpoint on a buffer and - * then passes that buffer to a system call. - * We still want to get TRCTRAPS for addresses - * in kernel space because that is useful when - * debugging the kernel. - */ - if (user_dbreg_trap()) { - /* - * Reset breakpoint bits because the - * processor doesn't - */ - load_dr6(rdr6() & 0xfffffff0); - return; - } + /* + * Ignore debug register trace traps due to + * accesses in the user's address space, which + * can happen under several conditions such as + * if a user sets a watchpoint on a buffer and + * then passes that buffer to a system call. + * We still want to get TRCTRAPS for addresses + * in kernel space because that is useful when + * debugging the kernel. + */ + if (user_dbreg_trap()) { + /* + * Reset breakpoint bits because the + * processor doesn't + */ + load_dr6(rdr6() & 0xfffffff0); + return; + } /* * Fall through (TRCTRAP kernel mode, kernel address) */ |
