From: David Vrabel <david.vrabel@citrix.com>
To: Jan Beulich <JBeulich@suse.com>, <david.vrabel@citrix.com>,
<boris.ostrovsky@oracle.com>, Juergen Gross <JGross@suse.com>
Cc: <xen-devel@lists.xenproject.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH] xen/privcmd: sprinkle around cond_resched() calls in mmap ioctl handling
Date: Thu, 7 Jul 2016 10:37:17 +0100 [thread overview]
Message-ID: <577E22CD.7000308@citrix.com> (raw)
In-Reply-To: <577E224602000078000FBDC1@prv-mh.provo.novell.com>
On 07/07/16 08:35, Jan Beulich wrote:
> Many of these operations can take arbitrarily long, which can become a
> problem irrespective of them being exposed to privileged users only.
If this is a concern I would rather see large numbers of mapping
requests processed in smaller batches. This would also limit the amount
of memory needed.
Note also that xen_remap_domain_gfn() array already has a cond_resched()
after every batch of 16 GFNs.
David
prev parent reply other threads:[~2016-07-07 9:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-07 7:35 [PATCH] xen/privcmd: sprinkle around cond_resched() calls in mmap ioctl handling Jan Beulich
2016-07-07 9:37 ` David Vrabel [this message]
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