From: Keir Fraser <keir@xensource.com>
To: Christoph Egger <Christoph.Egger@amd.com>, xen-devel@lists.xensource.com
Subject: Re: RFC: vaddr_t and vsize_t
Date: Wed, 17 Jan 2007 15:49:35 +0000 [thread overview]
Message-ID: <C1D3F60F.7C1A%keir@xensource.com> (raw)
In-Reply-To: <200701171617.33273.Christoph.Egger@amd.com>
On 17/1/07 15:17, "Christoph Egger" <Christoph.Egger@amd.com> wrote:
> vaddr_t is used when a virtual address is meant. It is an unsigned integer and
> its size always matches sizeof(void *).
> vsize_t is used when the virtual address space is meant. It is an unsigned
> integer and its size always matches the whole size of the virtual address
> space.
Is this distinction ever useful?
The assumption that a pointer fits in a long is rather ingrained into Xen's
code base. Any attempt to remove that assumption is going to need some big
patches, and it's really not clear that we ought to care as I'm sure it's
true for any architecture we can conceive of caring one jot about.
-- Keir
next prev parent reply other threads:[~2007-01-17 15:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-17 15:17 RFC: vaddr_t and vsize_t Christoph Egger
2007-01-17 15:49 ` Keir Fraser [this message]
2007-01-17 16:21 ` Christoph Egger
2007-01-17 16:51 ` Keir Fraser
2007-01-18 7:13 ` Christoph Egger
2007-01-18 7:31 ` Keir Fraser
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