From: Borislav Petkov <b...@suse.de>
Update the documentation after
6f442be2fb22 ("x86_64, traps: Stop using IST for #SS").
Signed-off-by: Borislav Petkov <b...@suse.de>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Josh Poimboeuf <jpoim...@redhat.com>
Cc: Andy Lutomirski <l...@kernel.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: Michal Marek <mma...@suse.cz>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: X86 ML <x...@kernel.org>
Cc: live-patch...@vger.kernel.org
Cc: lkml <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Denys Vlasenko <dvlas...@redhat.com>
Cc: Brian Gerst <brge...@gmail.com>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Andrew Morton <a...@linux-foundation.org>
---
Documentation/x86/kernel-stacks | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/Documentation/x86/kernel-stacks b/Documentation/x86/kernel-stacks
index e3c8a49d1a2f..c3c935b9d56e 100644
--- a/Documentation/x86/kernel-stacks
+++ b/Documentation/x86/kernel-stacks
@@ -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).
--
1.9.0.258.g00eda23
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