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From: Borislav Petkov <bp@alien8.de>
To: Ashish Kalra <ashish.kalra@amd.com>
Cc: Thomas.Lendacky@amd.com, jon.grimm@amd.com,
	brijesh.singh@amd.com, dave.hansen@linux-intel.com,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	peterz@infradead.org, x86@kernel.org,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	mingo@redhat.com, luto@kernel.org, hpa@zytor.com,
	rientjes@google.com, tglx@linutronix.de, hch@lst.de
Subject: Re: [PATCH v6] swiotlb: Adjust SWIOTBL bounce buffer size for SEV guests.
Date: Tue, 24 Nov 2020 10:04:31 +0100	[thread overview]
Message-ID: <20201124090431.GC4009@zn.tnic> (raw)
In-Reply-To: <20201123225631.GA16055@ashkalra_ubuntu_server>

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.

https://people.kernel.org/tglx/notes-about-netiquette
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WARNING: multiple messages have this Message-ID (diff)
From: Borislav Petkov <bp@alien8.de>
To: Ashish Kalra <ashish.kalra@amd.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	hch@lst.de, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
	x86@kernel.org, luto@kernel.org, peterz@infradead.org,
	dave.hansen@linux-intel.com, iommu@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, brijesh.singh@amd.com,
	Thomas.Lendacky@amd.com, jon.grimm@amd.com, rientjes@google.com
Subject: Re: [PATCH v6] swiotlb: Adjust SWIOTBL bounce buffer size for SEV guests.
Date: Tue, 24 Nov 2020 10:04:31 +0100	[thread overview]
Message-ID: <20201124090431.GC4009@zn.tnic> (raw)
In-Reply-To: <20201123225631.GA16055@ashkalra_ubuntu_server>

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.

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

  reply	other threads:[~2020-11-24  9:04 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-19 21:42 [PATCH v6] swiotlb: Adjust SWIOTBL bounce buffer size for SEV guests Ashish Kalra
2020-11-19 21:42 ` Ashish Kalra
2020-11-23 17:06 ` Borislav Petkov
2020-11-23 17:06   ` Borislav Petkov
2020-11-23 17:56   ` Konrad Rzeszutek Wilk
2020-11-23 17:56     ` Konrad Rzeszutek Wilk
2020-11-23 18:02     ` Borislav Petkov
2020-11-23 18:02       ` Borislav Petkov
2020-11-23 18:43       ` Konrad Rzeszutek Wilk
2020-11-23 18:43         ` Konrad Rzeszutek Wilk
2020-11-24  9:00         ` Borislav Petkov
2020-11-24  9:00           ` Borislav Petkov
2020-11-23 22:56     ` Ashish Kalra
2020-11-23 22:56       ` Ashish Kalra
2020-11-24  9:04       ` Borislav Petkov [this message]
2020-11-24  9:04         ` Borislav Petkov
2020-11-24  9:25         ` Kalra, Ashish
2020-11-24  9:25           ` Kalra, Ashish
2020-11-24  9:38           ` Borislav Petkov
2020-11-24  9:38             ` Borislav Petkov
2020-11-24  9:43             ` Kalra, Ashish
2020-11-24  9:43               ` Kalra, Ashish
2020-11-24 23:46       ` Ashish Kalra
2020-11-24 23:46         ` Ashish Kalra
2020-12-01 20:42         ` Konrad Rzeszutek Wilk
2020-12-01 20:42           ` Konrad Rzeszutek Wilk

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