From: Wei Liu <wei.liu2@citrix.com>
To: Paul Durrant <paul.durrant@citrix.com>
Cc: xen-devel@lists.xenproject.org, Wei Liu <wei.liu2@citrix.com>,
Jan Beulich <jbeulich@suse.com>,
Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: [PATCH v4 08/12] x86/hvm/ioreq: maintain an array of ioreq servers rather than a list
Date: Thu, 7 Sep 2017 12:40:31 +0100 [thread overview]
Message-ID: <20170907114031.ncdtidmrgkbr52de@citrix.com> (raw)
In-Reply-To: <20170905113716.3960-9-paul.durrant@citrix.com>
On Tue, Sep 05, 2017 at 12:37:12PM +0100, Paul Durrant wrote:
> A subsequent patch will remove the current implicit limitation on creation
> of ioreq servers which is due to the allocation of gfns for the ioreq
> structures and buffered ioreq ring.
>
> It will therefore be necessary to introduce an explicit limit and, since
> this limit should be small, it simplifies the code to maintain an array of
> that size rather than using a list.
>
> Also, by reserving an array slot for the default server and populating
> array slots early in create, the need to pass an 'is_default' boolean
> to sub-functions can be avoided.
>
> Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
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next prev parent reply other threads:[~2017-09-07 11:40 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-05 11:37 [PATCH v4 00/12] x86: guest resource mapping Paul Durrant
2017-09-05 11:37 ` [PATCH v4 01/12] x86/mm: allow a privileged PV domain to map guest mfns Paul Durrant
2017-09-07 11:02 ` Wei Liu
2017-09-07 11:05 ` Paul Durrant
2017-09-07 11:09 ` Wei Liu
2017-09-07 11:19 ` Andrew Cooper
2017-09-05 11:37 ` [PATCH v4 02/12] x86/mm: add HYPERVISOR_memory_op to acquire guest resources Paul Durrant
2017-09-07 11:10 ` Wei Liu
2017-09-07 11:18 ` Paul Durrant
2017-09-07 11:36 ` Wei Liu
2017-09-07 11:37 ` Paul Durrant
2017-09-07 11:54 ` Jan Beulich
2017-09-05 11:37 ` [PATCH v4 03/12] tools/libxenforeignmemory: add support for resource mapping Paul Durrant
2017-09-07 11:48 ` Wei Liu
2017-09-05 11:37 ` [PATCH v4 04/12] tools/libxenforeignmemory: reduce xenforeignmemory_restrict code footprint Paul Durrant
2017-09-07 11:48 ` Wei Liu
2017-09-05 11:37 ` [PATCH v4 05/12] tools/libxenctrl: use new xenforeignmemory API to seed grant table Paul Durrant
2017-09-07 11:49 ` Wei Liu
2017-09-05 11:37 ` [PATCH v4 06/12] x86/hvm/ioreq: rename .*pfn and .*gmfn to .*gfn Paul Durrant
2017-09-05 11:37 ` [PATCH v4 07/12] x86/hvm/ioreq: use bool rather than bool_t Paul Durrant
2017-09-07 11:10 ` Wei Liu
2017-09-05 11:37 ` [PATCH v4 08/12] x86/hvm/ioreq: maintain an array of ioreq servers rather than a list Paul Durrant
2017-09-07 11:40 ` Wei Liu [this message]
2017-09-07 14:41 ` Roger Pau Monné
2017-09-07 14:51 ` Juergen Gross
2017-09-07 14:57 ` Roger Pau Monné
2017-09-07 15:16 ` Jan Beulich
2017-09-08 8:32 ` Paul Durrant
2017-09-05 11:37 ` [PATCH v4 09/12] x86/hvm/ioreq: simplify code and use consistent naming Paul Durrant
2017-09-07 11:45 ` Wei Liu
2017-09-05 11:37 ` [PATCH v4 10/12] x86/hvm/ioreq: use gfn_t in struct hvm_ioreq_page Paul Durrant
2017-09-07 11:45 ` Wei Liu
2017-09-05 11:37 ` [PATCH v4 11/12] x86/hvm/ioreq: defer mapping gfns until they are actually requsted Paul Durrant
2017-09-07 12:00 ` Wei Liu
2017-09-07 12:03 ` Paul Durrant
2017-09-07 12:16 ` Wei Liu
2017-09-07 12:29 ` Paul Durrant
2017-09-07 14:22 ` Wei Liu
2017-09-08 8:34 ` Paul Durrant
2017-09-05 11:37 ` [PATCH v4 12/12] x86/hvm/ioreq: add a new mappable resource type Paul Durrant
2017-09-07 14:51 ` Wei Liu
2017-09-08 8:28 ` Paul Durrant
2017-09-07 14:56 ` Roger Pau Monné
2017-09-07 14:59 ` Wei Liu
2017-09-07 15:23 ` Roger Pau Monné
2017-09-08 8:29 ` Paul Durrant
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