linux-kernel - Re: [RFC PATCH 3/5] x86/entry: Add auxiliary pt

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Message-ID: <759cbd16bbfc8a9fcf797ae15bbe60aa656a0564.camel@surriel.com>
Date:   Fri, 05 Aug 2022 14:45:54 -0400
From:   Rik van Riel <riel@...riel.com>
To:     ira.weiny@...el.com, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...el.com>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [RFC PATCH 3/5] x86/entry: Add auxiliary pt_regs space

On Fri, 2022-08-05 at 10:30 -0700, ira.weiny@...el.com wrote:
> 
> Prepare the assembly code to add a hidden auxiliary pt_regs space. 
> To
> simplify, the assembly code only adds space on the stack as defined
> by
> the C code which needs it.  The use of this space is left to the C
> code
> which is required to select ARCH_HAS_PTREGS_AUXILIARY to enable this
> support.
> 
Acked-by: Rik van Riel <riel@...riel.com>

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