x86: debugctlmsr kprobes

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This adjusts the x86 kprobes implementation to cope with per-thread
MSR_IA32_DEBUGCTLMSR being set for user mode.  I haven't delved deep
enough into the kprobes code to be really sure this covers all the
cases where the user-mode BTF setting needs to be cleared or restored.
It looks about right to me.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Roland McGrath 2008-01-30 13:30:54 +01:00 • committed by Ingo Molnar

parent 10faa81e10

commit 1ecc798c67

2 changed files with 29 additions and 0 deletions

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15

arch/x86/kernel/kprobes_32.c

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14

arch/x86/kernel/kprobes_64.c

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