Changeset ae89656 in mainline for kernel/arch/ia32/include/arch/interrupt.h

Timestamp:

2018-05-11T17:26:58Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

7473807

Parents:

8a8771c

Message:

Provide an empty #DB handler

Userspace can trigger a #DB exception just after the SYSENTER
instruction by setting the TF in EFLAGS. The #DB exception will appear
to have originated in the kernel so we must not panic in that case.

File:

• kernel/arch/ia32/include/arch/interrupt.h (modified) (2 diffs)

kernel/arch/ia32/include/arch/interrupt.h

@@ -51 +51 @@
 
 #define EXC_DE 0
+#define EXC_DB 1
 #define EXC_NM 7
 #define EXC_SS 12
@@ -73 +74 @@
 
 #define VECTOR_DE                 (IVT_EXCBASE + EXC_DE)
+#define VECTOR_DB                 (IVT_EXCBASE + EXC_DB)
 #define VECTOR_NM                 (IVT_EXCBASE + EXC_NM)
 #define VECTOR_SS                 (IVT_EXCBASE + EXC_SS)