Changeset b277bef in mainline

Timestamp:

2018-05-10T07:35:59Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

ae7d03c

Parents:

2f72560a

Message:

Mask TF on SYSCALL

File:

• kernel/arch/amd64/src/syscall.c (modified) (1 diff)

kernel/arch/amd64/src/syscall.c

@@ -66 +66 @@
          *   the right direction
          * - clear NT to prevent a #GP should the flag proliferate to an IRET
+         * - clear TF to prevent an immediate #DB if TF is set
          */
-        write_msr(AMD_MSR_SFMASK, RFLAGS_IF | RFLAGS_DF | RFLAGS_NT);
+        write_msr(AMD_MSR_SFMASK,
+            RFLAGS_IF | RFLAGS_DF | RFLAGS_NT | RFLAGS_TF);
 }