linux-kernel - Re: [PATCH v6] swiotlb: Adjust SWIOTBL bounce buffer size for SEV guests.

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Message-ID: <20201123180215.GG15044@zn.tnic>
Date:   Mon, 23 Nov 2020 19:02:15 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:     Ashish Kalra <Ashish.Kalra@....com>, hch@....de,
        tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, luto@...nel.org, peterz@...radead.org,
        dave.hansen@...ux-intel.com, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, brijesh.singh@....com,
        Thomas.Lendacky@....com, jon.grimm@....com, rientjes@...gle.com
Subject: Re: [PATCH v6] swiotlb: Adjust SWIOTBL bounce buffer size for SEV
 guests.

On Mon, Nov 23, 2020 at 12:56:32PM -0500, Konrad Rzeszutek Wilk wrote:
> This is not going to work for TDX. I think having a registration
> to SWIOTLB to have this function would be better going forward.
> 
> As in there will be a swiotlb_register_adjuster() which AMD SEV
> code can call at start, also TDX can do it (and other platforms).

Oh do tell. It doesn't need to adjust size?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette