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x86/Documentation: Remove STACKFAULT_STACK bulletpoint

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Update the documentation after

  6f442be2fb ("x86_64, traps: Stop using IST for #SS").

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/1432628901-18044-17-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Borislav Petkov 2015-05-26 10:28:19 +02:00 committed by Ingo Molnar
parent 54fd157805
commit d724a9a52b
1 changed files with 3 additions and 7 deletions
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10
Documentation/x86/kernel-stacks
View File

@ -1,3 +1,6 @@
Kernel stacks on x86-64 bit
---------------------------
Most of the text from Keith Owens, hacked by AK
x86_64 page size (PAGE_SIZE) is 4K.
@ -56,13 +59,6 @@ If that assumption is ever broken then the stacks will become corrupt.
The currently assigned IST stacks are :-
* STACKFAULT_STACK. EXCEPTION_STKSZ (PAGE_SIZE).
Used for interrupt 12 - Stack Fault Exception (#SS).
This allows the CPU to recover from invalid stack segments. Rarely
happens.
* DOUBLEFAULT_STACK. EXCEPTION_STKSZ (PAGE_SIZE).
Used for interrupt 8 - Double Fault Exception (#DF).