From: Gerd Hoffmann <kraxel@redhat.com>
To: Amos Kong <akong@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
qemu-devel@nongnu.org, Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v2 1/6] qerror: add MAX_KEYCODES 16
Date: Fri, 15 Jun 2012 09:57:49 +0200 [thread overview]
Message-ID: <4FDAEAFD.9090406@redhat.com> (raw)
In-Reply-To: <4FDAE857.6050106@redhat.com>
Hi,
>> It seems we need to notice user when inputted keys are more than 16.
>
> Hi Gerd,
>
> When I use 'sendkey' command to send key-series to guest, some keyboard
> events will be send. There is a limitation (16) that was introduced by this
> old commit c8256f9d (without description). Do you know the reason?
Probably hardware limitation, ps/2 keyboards can buffer up to 16 keys IIRC.
Likewise the usb hid devices can buffer up to 16 events. In that case
it is just a qemu implementation detail and not a property of the
hardware we are emulating, so it can be changed. Not trivially though
as the buffer is part of the migration data, so it is more work that
just changing a #define.
HTH,
Gerd
next prev parent reply other threads:[~2012-06-15 7:58 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-01 22:54 [Qemu-devel] [PATCH v2 0/6] convert sendkey to qapi Amos Kong
2012-06-01 22:54 ` [Qemu-devel] [PATCH v2 1/6] qerror: add QERR_OVERFLOW Amos Kong
2012-06-04 5:27 ` Anthony Liguori
2012-06-05 14:29 ` [Qemu-devel] [PATCH v2 1/6] qerror: add MAX_KEYCODES 16 Amos Kong
[not found] ` <4FD0326F.3010806@redhat.com>
[not found] ` <20120611140642.06be2ee8@doriath.home>
[not found] ` <4FD62827.4060900@us.ibm.com>
[not found] ` <20120611142546.66871522@doriath.home>
2012-06-14 10:20 ` Amos Kong
2012-06-15 7:46 ` Amos Kong
2012-06-15 7:57 ` Gerd Hoffmann [this message]
2012-06-15 13:35 ` Luiz Capitulino
2012-06-18 15:30 ` Amos Kong
2012-06-19 9:52 ` Amos Kong
2012-06-01 22:54 ` [Qemu-devel] [PATCH v2 2/6] fix doc of using raw values with sendkey Amos Kong
2012-06-06 18:16 ` Luiz Capitulino
2012-06-01 22:54 ` [Qemu-devel] [PATCH v2 3/6] rename keyname '<' to 'less' Amos Kong
2012-06-06 18:22 ` Luiz Capitulino
2012-06-06 23:12 ` Amos Kong
2012-06-01 22:54 ` [Qemu-devel] [PATCH v2 4/6] hmp: rename arguments Amos Kong
2012-06-01 22:54 ` [Qemu-devel] [PATCH v2 5/6] qapi: generate list struct and visit_list for enum Amos Kong
2012-06-05 15:01 ` Amos Kong
2012-06-06 18:40 ` Luiz Capitulino
2012-06-07 0:26 ` Michael Roth
2012-06-07 2:52 ` Amos Kong
2012-06-11 17:00 ` Luiz Capitulino
2012-06-07 0:15 ` Michael Roth
2012-06-07 3:33 ` Amos Kong
2012-06-01 22:54 ` [Qemu-devel] [PATCH v2 6/6] qapi: convert sendkey Amos Kong
2012-06-04 17:09 ` Eric Blake
2012-06-05 14:55 ` Amos Kong
2012-06-05 15:05 ` Eric Blake
2012-06-06 7:13 ` Amos Kong
2012-06-06 11:58 ` Eric Blake
2012-06-07 4:51 ` Anthony Liguori
2012-06-07 13:08 ` Eric Blake
2012-06-01 23:03 ` [Qemu-devel] [PATCH v2 0/6] convert sendkey to qapi Amos Kong
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