From: Paul Durrant <xadimgnik@gmail.com>
To: "'Andrew Cooper'" <andrew.cooper3@citrix.com>,
"'Xen-devel'" <xen-devel@lists.xenproject.org>
Cc: "'Wei Liu'" <wl@xen.org>,
"'Roger Pau Monné'" <roger.pau@citrix.com>,
"'Juergen Gross'" <jgross@suse.com>,
"'Ian Jackson'" <iwj@xenproject.org>,
"'Michał Leszczyński'" <michal.leszczynski@cert.pl>,
"'Hubert Jasudowicz'" <hubert.jasudowicz@cert.pl>,
"'Tamas K Lengyel'" <tamas@tklengyel.com>,
"'Manuel Bouyer'" <bouyer@netbsd.org>
Subject: RE: [PATCH v4] tools/foreignmem: Support querying the size of a resource
Date: Thu, 28 Jan 2021 12:45:33 -0000 [thread overview]
Message-ID: <029301d6f573$783c9a10$68b5ce30$@xen.org> (raw)
In-Reply-To: <20210128120152.9908-1-andrew.cooper3@citrix.com>
> -----Original Message-----
> From: Andrew Cooper <andrew.cooper3@citrix.com>
> Sent: 28 January 2021 12:02
> To: Xen-devel <xen-devel@lists.xenproject.org>
> Cc: Andrew Cooper <andrew.cooper3@citrix.com>; Wei Liu <wl@xen.org>; Paul Durrant <paul@xen.org>;
> Roger Pau Monné <roger.pau@citrix.com>; Juergen Gross <jgross@suse.com>; Ian Jackson
> <iwj@xenproject.org>; Michał Leszczyński <michal.leszczynski@cert.pl>; Hubert Jasudowicz
> <hubert.jasudowicz@cert.pl>; Tamas K Lengyel <tamas@tklengyel.com>; Manuel Bouyer <bouyer@netbsd.org>
> Subject: [PATCH v4] tools/foreignmem: Support querying the size of a resource
>
> With the Xen side of this interface (soon to be) fixed to return real sizes,
> userspace needs to be able to make the query.
>
> Introduce xenforeignmemory_resource_size() for the purpose, bumping the
> library minor version.
>
> Update both all osdep_xenforeignmemory_map_resource() implementations to
> understand size requests, skip the mmap() operation, and copy back the
> nr_frames field.
>
> For NetBSD, also fix up the ioctl() error path to issue an unmap(), which was
> overlooked by c/s 4a64e2bb39 "libs/foreignmemory: Implement on NetBSD".
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
> Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Paul Durrant <paul@xen.org>
next prev parent reply other threads:[~2021-01-28 12:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-28 12:01 [PATCH v4] tools/foreignmem: Support querying the size of a resource Andrew Cooper
2021-01-28 12:45 ` Paul Durrant [this message]
2021-01-28 13:01 ` Wei Liu
2021-01-29 10:38 ` Manuel Bouyer
2021-01-29 14:59 ` Roger Pau Monné
2021-01-29 15:09 ` Andrew Cooper
2021-01-29 15:37 ` Manuel Bouyer
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