From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Roger Pau Monne <roger.pau@citrix.com>
Cc: Keir Fraser <keir@xen.org>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Tim Deegan <tim@xen.org>, Jan Beulich <jbeulich@suse.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH RFC] xen/grant_table: introduce GNTTABOP_unmap_and_duplicate
Date: Mon, 26 Aug 2013 15:51:16 +0200 [thread overview]
Message-ID: <521B5D54.6040803@citrix.com> (raw)
In-Reply-To: <1375286708-4783-1-git-send-email-roger.pau@citrix.com>
On 31/07/13 18:05, Roger Pau Monne wrote:
> GNTTABOP_unmap_and_replace has two issues:
> - it unconditionally replaces the mapping passed in new_addr with 0;
> - it doesn't support GNTMAP_contains_pte mappings on x86, returning a
> general error instead of some form of ENOSYS.
>
> Introduce a new operation called GNTTABOP_unmap_and_duplicate that
> behaves like GNTTABOP_unmap_and_replace without zeroing the mapping
> passed in new_addr. Also return GNTST_enosys instead of
> GNTST_general_error if GNTMAP_contains_pte is specified.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
> Cc: Tim Deegan <tim@xen.org>
> Cc: Jan Beulich <jbeulich@suse.com>
> Cc: Keir Fraser <keir@xen.org>
Any comments on this one or should I just drop the RFC and resend?
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prev parent reply other threads:[~2013-08-26 13:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-31 16:05 [PATCH RFC] xen/grant_table: introduce GNTTABOP_unmap_and_duplicate Roger Pau Monne
2013-08-26 13:51 ` Roger Pau Monné [this message]
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