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

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Message-ID: <20201124090431.GC4009@zn.tnic>
Date:   Tue, 24 Nov 2020 10:04:31 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Ashish Kalra <ashish.kalra@....com>
Cc:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.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 10:56:31PM +0000, Ashish Kalra wrote:
> As i mentioned earlier, the patch was initially based on using a % of
> guest memory,

Can you figure out how much the guest memory is and then allocate a
percentage?

-- 
Regards/Gruss,
    Boris.

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