From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756434AbbEUPta (ORCPT ); Thu, 21 May 2015 11:49:30 -0400 Received: from mail.skyhub.de ([78.46.96.112]:41256 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756326AbbEUPtR (ORCPT ); Thu, 21 May 2015 11:49:17 -0400 From: Borislav Petkov To: Ingo Molnar Cc: LKML , Josh Poimboeuf , Andy Lutomirski , Thomas Gleixner , "H. Peter Anvin" , Michal Marek , Peter Zijlstra , X86 ML , live-patching@vger.kernel.org, Linus Torvalds , Denys Vlasenko , Brian Gerst , Peter Zijlstra , Andrew Morton Subject: [PATCH 2/3] x86/documentation: Remove STACKFAULT_STACK bulletpoint Date: Thu, 21 May 2015 17:49:12 +0200 Message-Id: <1432223353-19008-2-git-send-email-bp@alien8.de> X-Mailer: git-send-email 2.3.5 In-Reply-To: <1432223353-19008-1-git-send-email-bp@alien8.de> References: <20150521111118.GA31274@gmail.com> <1432223353-19008-1-git-send-email-bp@alien8.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov Update the documentation after 6f442be2fb22 ("x86_64, traps: Stop using IST for #SS"). Signed-off-by: Borislav Petkov Cc: Ingo Molnar Cc: Josh Poimboeuf Cc: Andy Lutomirski Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Michal Marek Cc: Peter Zijlstra Cc: X86 ML Cc: live-patching@vger.kernel.org Cc: lkml Cc: Linus Torvalds Cc: Denys Vlasenko Cc: Brian Gerst Cc: Peter Zijlstra Cc: Andrew Morton --- 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). -- 2.3.5