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From: Ian Jackson <ian.jackson@eu.citrix.com>
To: xen-devel@lists.xensource.com
Cc: Ross Lagerwall <ross.lagerwall@citrix.com>,
	Paul Durrant <Paul.Durrant@citrix.com>,
	Ian Jackson <Ian.Jackson@eu.citrix.com>,
	Wei Liu <wei.liu2@citrix.com>
Subject: [PATCH v2 25/24] xl: Document VGA problems arising from lack of physmap dmop
Date: Fri, 6 Oct 2017 15:33:52 +0100	[thread overview]
Message-ID: <1507300432-14266-1-git-send-email-ian.jackson@eu.citrix.com> (raw)

[ extra patch, following test report from Ross ]

Ross reports that stdvga guests do not work, and cirrus guests are
slow, because qemu tries to do xc_domain_add_to_physmap.  We will need
another dmop to fix this properly.

For now, document the problem.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Reported-by: Ross Lagerwall <ross.lagerwall@citrix.com>
CC: Ross Lagerwall <ross.lagerwall@citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Paul Durrant <Paul.Durrant@citrix.com>
---
 docs/man/xl.cfg.pod.5.in | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/man/xl.cfg.pod.5.in b/docs/man/xl.cfg.pod.5.in
index 8446d43..46b5ae6 100644
--- a/docs/man/xl.cfg.pod.5.in
+++ b/docs/man/xl.cfg.pod.5.in
@@ -2239,6 +2239,12 @@ For example, cdrom insert will fail.
 
 =item
 
+Domains with stdvga graphics cards to not work.
+Domains with cirrus vga do work,
+but there are performance problems with the vga console.
+
+=item
+
 You must create user(s) for qemu to run as.
 
 Ideally, set aside a range of 32752 uids
-- 
2.1.4


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             reply	other threads:[~2017-10-06 14:33 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-06 14:33 Ian Jackson [this message]
2017-10-06 14:51 ` [PATCH v2 25/24] xl: Document VGA problems arising from lack of physmap dmop Wei Liu
2017-10-06 14:54   ` Ross Lagerwall
2017-10-06 14:54   ` Paul Durrant
2017-10-06 15:01     ` Ian Jackson
2017-10-06 16:35       ` Paul Durrant
2017-10-06 14:57   ` Ian Jackson
2017-10-06 14:58     ` Wei Liu

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