linux-kernel - Re: [PATCH v1] vhost: avoid large order allocations

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Message-ID: <87tx8tg3a1.fsf@kima.orebokech.com>
Date:	Tue, 13 May 2014 16:29:58 +0200
From:	Romain Francoise <romain@...bokech.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Michael Mueller <mimu@...ux.vnet.ibm.com>, kvm@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, borntraeger@...ibm.com,
	cornelia.huck@...ibm.com, ddongch@...ibm.com
Subject: Re: [PATCH v1] vhost: avoid large order allocations

"Michael S. Tsirkin" <mst@...hat.com> writes:

> Please dont' do this, extra indirection hurts performance.
> Instead, please change vhost_net_open and scsi to allocate the whole
> structure with vmalloc if kmalloc fails, along the lines of
> 74d332c13b2148ae934ea94dac1745ae92efe8e5

Back in January 2013, you didn't seem to think it was a good idea:

https://lkml.org/lkml/2013/1/23/492
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