linux-kernel - Re: [PATCH] x86/sev: Fully map the #VC exception stacks

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Message-ID: <YVcF9ENTfLAGaLec@zn.tnic>
Date:   Fri, 1 Oct 2021 14:58:28 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Joerg Roedel <jroedel@...e.de>
Cc:     Tom Lendacky <thomas.lendacky@....com>,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Brijesh Singh <brijesh.singh@....com>
Subject: Re: [PATCH] x86/sev: Fully map the #VC exception stacks

On Fri, Oct 01, 2021 at 01:50:24PM +0200, Joerg Roedel wrote:
> Yeah, I think the right fix is to export cea_map_percpu_pages() and move
> the cea_map_stack() macro to a header and use it to map the VC stacks.

I'll do you one better: Put the #VC stack mapping into
percpu_setup_exception_stacks(), where it naturally belongs and where
the other stacks are being mapped instead of doing everything "by hand"
like now and exporting random helpers.

Thx.

-- 
Regards/Gruss,
    Boris.

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