| commit | f1c049464a1a8e6d5578c818710a5745c06541a0 | |
| author | Jan Kiszka <jan.kiszka@siemens.com> | |
| Thu, 21 Feb 2008 12:32:49 +0000 (21 13:32 +0100) | ||
| committer | Avi Kivity <avi@qumranet.com> | |
| Fri, 22 Feb 2008 07:40:37 +0000 (22 09:40 +0200) | ||
| tree | de56a7a5c29c34d9fcb5e507aee60cd8f976cd4b | treesnapshot (tar.gz zip) |
| parent | f108b1d6e588dc2e2addb85ccfeec19921a2666e | commitdiff |
Fix reading from character devices
commit "kvm: qemu: consume all pending I/O in I/O loop"
(8ab8bb09f1115b9bf733f885cc92b6c63d83f420) broke reading data bursts
from serial devices (and maybe from other character devices as well) by
guests. Reason: serial devices do input flow control via fd_read_poll,
but qemu now ignores this fact by pushing all data into the virtual
device as soon as it is available.
Patch below is not really nice (just as the whole internal virtual I/O
interface at the moment, IMHO), but it re-enables the serial ports for
now.
Signed-off-by: Avi Kivity <avi@qumranet.com>
commit "kvm: qemu: consume all pending I/O in I/O loop"
(8ab8bb09f1115b9bf733f885cc92b6c63d83f420) broke reading data bursts
from serial devices (and maybe from other character devices as well) by
guests. Reason: serial devices do input flow control via fd_read_poll,
but qemu now ignores this fact by pushing all data into the virtual
device as soon as it is available.
Patch below is not really nice (just as the whole internal virtual I/O
interface at the moment, IMHO), but it re-enables the serial ports for
now.
Signed-off-by: Avi Kivity <avi@qumranet.com>
| vl.c | diffblobblamehistory |