linux-kernel - Re: [PATCH 18/43] x86/entry/64: Move the IST stacks into cpu_entry

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Message-ID: <alpine.DEB.2.20.1711241523100.1757@nanos>
Date:   Fri, 24 Nov 2017 15:23:22 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Ingo Molnar <mingo@...nel.org>
cc:     linux-kernel@...r.kernel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...capital.net>,
        "H . Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 18/43] x86/entry/64: Move the IST stacks into
 cpu_entry_area

On Fri, 24 Nov 2017, Ingo Molnar wrote:

> From: Andy Lutomirski <luto@...nel.org>
> 
> The IST stacks are needed when an IST exception occurs and are
> accessed before any kernel code at all runs.  Move them into
> cpu_entry_area.
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>