linux-kernel - [tip:x86/debug] x86/Documentation: Remove STACKFAULT

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Message-ID: <tip-d724a9a52b0026ac6a05440c079c9a618acfd8cf@git.kernel.org>
Date:	Wed, 27 May 2015 07:17:20 -0700
From:	tip-bot for Borislav Petkov <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, jpoimboe@...hat.com, peterz@...radead.org,
	brgerst@...il.com, mmarek@...e.cz, linux-kernel@...r.kernel.org,
	a.p.zijlstra@...llo.nl, luto@...nel.org, bp@...en8.de,
	akpm@...ux-foundation.org, luto@...capital.net, hpa@...or.com,
	bp@...e.de, mingo@...nel.org, dvlasenk@...hat.com,
	torvalds@...ux-foundation.org
Subject: [tip:x86/debug] x86/Documentation:
  Remove STACKFAULT_STACK bulletpoint

Commit-ID:  d724a9a52b0026ac6a05440c079c9a618acfd8cf
Gitweb:     http://git.kernel.org/tip/d724a9a52b0026ac6a05440c079c9a618acfd8cf
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Tue, 26 May 2015 10:28:19 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 27 May 2015 14:39:46 +0200

x86/Documentation: Remove STACKFAULT_STACK bulletpoint

Update the documentation after

  6f442be2fb22 ("x86_64, traps: Stop using IST for #SS").

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Michal Marek <mmarek@...e.cz>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: live-patching@...r.kernel.org
Link: http://lkml.kernel.org/r/1432628901-18044-17-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@...nel.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 e3c8a49..c3c935b 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).
--
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