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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 <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Michal Marek <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Borislav Petkov 2015-05-26 10:28:19 +02:00 • committed by Ingo Molnar
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).