From: Julien Grall <julien.grall@citrix.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Wei.Liu2@citrix.com, ian.campbell@citrix.com,
Tim Deegan <tim@xen.org>, Ian Jackson <ian.jackson@eu.citrix.com>,
stefano.stabellini@citrix.com, xen-devel@lists.xenproject.org,
Keir Fraser <keir@xen.org>
Subject: Re: [RFC 2/2] xen/public: grant-table: Specificy the size of the grant
Date: Wed, 12 Aug 2015 11:00:42 +0100 [thread overview]
Message-ID: <55CB194A.2060901@citrix.com> (raw)
In-Reply-To: <55CB100E0200007800099F21@prv-mh.provo.novell.com>
On 12/08/2015 08:21, Jan Beulich wrote:
> This paragraph should get "on ARM" added somewhere. There is no
> inherent requirement for such a restriction on another architecture
> Xen might get ported to; the only restriction of the current interface
> is that it can't support page sizes from 64k up. On an architecture
> e.g. not supporting other than 8k pages things would still be fine,
> yet the comment above would then be wrong.
>
> An alternative might be to say "... is always the smallest
> architecturally supported page size (e.g. 4k on x86 and ARM)
> irrespective of ...".
While this is true today, I don't see anything that would prevent a new
architecture to respect this.
What about replacing 4KB by "Xen Page size" and define this size per
architecture in arch-*.h?
Regards,
--
Julien Grall
next prev parent reply other threads:[~2015-08-12 10:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-05 11:28 [RFC 0/2] xen: Clarify the page granularity for the hypercall Julien Grall
2015-08-05 11:28 ` [RFC 1/2] xen/mm: Clarify the granularity for each Frame Number Julien Grall
2015-08-05 11:40 ` Andrew Cooper
2015-08-05 11:51 ` Ian Campbell
2015-08-05 12:36 ` Julien Grall
2015-08-05 12:46 ` Andrew Cooper
2015-08-05 13:18 ` Julien Grall
2015-08-12 7:16 ` Jan Beulich
2015-08-12 9:57 ` Julien Grall
2015-08-12 10:33 ` Jan Beulich
2015-08-12 11:13 ` Julien Grall
2015-08-12 11:58 ` Jan Beulich
2015-08-12 12:57 ` Julien Grall
2015-08-12 13:25 ` Jan Beulich
2015-08-05 11:28 ` [RFC 2/2] xen/public: grant-table: Specificy the size of the grant Julien Grall
2015-08-05 16:51 ` Stefano Stabellini
2015-08-12 7:21 ` Jan Beulich
2015-08-12 10:00 ` Julien Grall [this message]
2015-08-12 10:35 ` Jan Beulich
2015-08-12 11:08 ` Julien Grall
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