From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752232AbbEZIaO (ORCPT ); Tue, 26 May 2015 04:30:14 -0400 Received: from mail.skyhub.de ([78.46.96.112]:44774 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751548AbbEZI23 (ORCPT ); Tue, 26 May 2015 04:28:29 -0400 From: Borislav Petkov To: Ingo Molnar Cc: X86-ML , LKML Subject: [PATCH 16/18] x86/documentation: Remove STACKFAULT_STACK bulletpoint Date: Tue, 26 May 2015 10:28:19 +0200 Message-Id: <1432628901-18044-17-git-send-email-bp@alien8.de> X-Mailer: git-send-email 1.9.0.258.g00eda23 In-Reply-To: <1432628901-18044-1-git-send-email-bp@alien8.de> References: <1432628901-18044-1-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). -- 1.9.0.258.g00eda23