From: Robert VanVossen <robert.vanvossen@dornerworks.com>
To: Jan Beulich <JBeulich@suse.com>,
Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Keir Fraser <keir@xen.org>,
Nathan Studer <nate.studer@dornerworks.com>,
Xen-devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH 3/4] sched/arinc653: Remove MAX_VIRT_CPUS bounds check
Date: Tue, 20 Jan 2015 09:20:56 -0500 [thread overview]
Message-ID: <54BE6448.70502@dornerworks.com> (raw)
In-Reply-To: <54BE3D290200007800056E41@mail.emea.novell.com>
On 1/20/2015 5:34 AM, Jan Beulich wrote:
>>>> On 19.01.15 at 12:21, <andrew.cooper3@citrix.com> wrote:
>> The arinc653 interface is capable of specifying a domain in the schedule
>> (from
>> the toolstack) before the domain itself exists, or is present in the cpupool
>> (The domain is identified by UUID rather than domid). As a result, the
>> schedule can't be validated at this point.
>>
>> The vcpu_id from userspace is only ever used to compare against a list of
>> real
>> vcpus available to the scheduler, which prevents ill-specified vcpus from
>> actually being scheduled.
>>
>> Remove the MAX_VIRT_CPUS test, as it is not an appropriate bound for
>> vcpu_id.
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
>
> Reviewed-by: Jan Beulich <jbeulich@suse.com>
>
Acked-by Robert VanVossen <robert.vanvossen@dornerworks.com>
next prev parent reply other threads:[~2015-01-20 14:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-19 11:21 [PATCH 0/4] Reduce the use of MAX_VIRT_CPUS in tree Andrew Cooper
2015-01-19 11:21 ` [PATCH 1/4] xen/domain: Introduce domain_max_vcpus() helper and implement per arch Andrew Cooper
2015-01-19 12:16 ` Simon Rowe
2015-01-19 12:52 ` Andrew Cooper
2015-01-19 12:57 ` Ian Campbell
2015-01-19 12:59 ` Andrew Cooper
2015-01-20 10:27 ` Jan Beulich
2015-01-20 14:06 ` [PATCH v2 " Andrew Cooper
2015-01-20 11:05 ` [PATCH " Ian Campbell
2015-01-19 11:21 ` [PATCH 2/4] xen/evtchn: Reduce the size of the poll_mask where possible Andrew Cooper
2015-01-20 10:28 ` Jan Beulich
2015-01-19 11:21 ` [PATCH 3/4] sched/arinc653: Remove MAX_VIRT_CPUS bounds check Andrew Cooper
2015-01-20 10:34 ` Jan Beulich
2015-01-20 14:20 ` Robert VanVossen [this message]
2015-01-19 11:21 ` [PATCH 4/4] xen/many: Drop redundant MAX_VIRT_CPUS bounds checks Andrew Cooper
2015-01-20 10:36 ` Jan Beulich
2015-01-20 11:06 ` Ian Campbell
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