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| author |   Roland McGrath <roland@redhat.com> | 2008-01-30 13:30:54 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:30:54 +0100 |
| commit | 7e9916040b3020d0f36d68bb7512e3b80b623097 (patch) | |
| tree | 7c391bcdb7a5d917b54ae968304e8a951997e16e /include/asm-x86/processor_64.h | |
| parent | x86: debugctlmsr kconfig (diff) | |
| download | linux-dev-7e9916040b3020d0f36d68bb7512e3b80b623097.tar.xz linux-dev-7e9916040b3020d0f36d68bb7512e3b80b623097.zip | |
x86: debugctlmsr context switch
This adds low-level support for a per-thread value of MSR_IA32_DEBUGCTLMSR.
The per-thread value is switched in when TIF_DEBUGCTLMSR is set.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/processor_64.h')
| -rw-r--r-- | include/asm-x86/processor_64.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-x86/processor_64.h b/include/asm-x86/processor_64.h index 20d8935d141a..e7bea4fed642 100644 --- a/include/asm-x86/processor_64.h +++ b/include/asm-x86/processor_64.h @@ -238,6 +238,8 @@ struct thread_struct { int ioperm; unsigned long *io_bitmap_ptr; unsigned io_bitmap_max; +/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */ + unsigned long debugctlmsr; /* cached TLS descriptors. */ u64 tls_array[GDT_ENTRY_TLS_ENTRIES]; } __attribute__((aligned(16))); |