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linux/Documentation/x86/kernel-stacks

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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@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/1432628901-18044-17-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-26 10:28:19 +02:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
[PATCH] x86-64: cleanup Doc/x86_64/ files Fix typos. Lots of whitespace changes for readability and consistency. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andi Kleen <ak@suse.de>
2007-02-13 13:26:23 +01:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
Documentation/x86: Rename IRQSTACKSIZE to IRQ_STACK_SIZE The IRQSTACKSIZE was renamed to the IRQ_STACK_SIZE in the (26f80bd6a9 x86-64: Convert irqstacks to per-cpu) commit, but it still named IRQSTACKSIZE in the documentation. This patch fixes this. Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-08-21 15:19:06 +06:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
x86: Always use irq stacks IRQ stacks provide much better safety against unexpected stack use from interrupts, at the minimal downside of slightly higher memory usage. Enable irq stacks also for the default 8k stack on 32-bit kernels to minimize the problem of stack overflows through interrupt activity. This is what the 64-bit kernel and various other architectures already do. Signed-off-by: Christoph Hellwig <hch@lst.de> LKML-Reference: <20100628121554.GA6605@lst.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2010-06-28 14:15:54 +02:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
[PATCH] x86-64: cleanup Doc/x86_64/ files Fix typos. Lots of whitespace changes for readability and consistency. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andi Kleen <ak@suse.de>
2007-02-13 13:26:23 +01:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
[PATCH] x86-64: cleanup Doc/x86_64/ files Fix typos. Lots of whitespace changes for readability and consistency. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andi Kleen <ak@suse.de>
2007-02-13 13:26:23 +01:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
x86, entry: Switch stacks on a paranoid entry from userspace This causes all non-NMI, non-double-fault kernel entries from userspace to run on the normal kernel stack. Double-fault is exempt to minimize confusion if we double-fault directly from userspace due to a bad kernel stack. This is, suprisingly, simpler and shorter than the current code. It removes the IMO rather frightening paranoid_userspace path, and it make sync_regs much simpler. There is no risk of stack overflow due to this change -- the kernel stack that we switch to is empty. This will also enable us to create non-atomic sections within machine checks from userspace, which will simplify memory failure handling. It will also allow the upcoming fsgsbase code to be simplified, because it doesn't need to worry about usergs when scheduling in paranoid_exit, as that code no longer exists. Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Tony Luck <tony.luck@intel.com> Acked-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Andy Lutomirski <luto@amacapital.net>
2014-11-11 12:49:41 -08:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
[PATCH] x86-64: cleanup Doc/x86_64/ files Fix typos. Lots of whitespace changes for readability and consistency. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andi Kleen <ak@suse.de>
2007-02-13 13:26:23 +01:00
[PATCH] Add stack documentation document from Keith Owens Describes the stack organization on x86-64. I changed it a bit and removed some obsolete information and the questions. Cc: kaos@sgi.com Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:31 +02:00
x86/Documentation: Adapt Ingo's explanation on printing backtraces Hold it down for future reference, as the question about the question mark in stack traces keeps popping up. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/1432628901-18044-18-git-send-email-bp@alien8.de Link: http://lkml.kernel.org/r/20150521101614.GA10889@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-26 10:28:20 +02:00