On 09/09/2014 17:28, Kirill Batuzov wrote:
In short: QEMU serial port transmits data as fast as it can ignoring
baud rate completely. As a result we are stuck in serial8250_interrupt
ISR in kernel most of the time.
Overall we have a large issue with rate control and flow control for
On 11 December 2014 at 14:56, Paolo Bonzini pbonz...@redhat.com wrote:
I think an abstraction of the serial port concept that is based on the
16550A register set, and with arbitrarily sized FIFOs, would be nice to
have. All device models would talk to such abstraction. The 16550A is
well
On 11/12/2014 16:06, Peter Maydell wrote:
An abstraction of that from the specifics of the PC's serial port
might be nice, yes. (omap_uart.c has to jump through some ugly hoops
currently, with more ugliness in the out-of-tree omap3 extensions.)
However I don't think it makes sense to force
On Fri, 5 Sep 2014, Andrey Korolyov wrote:
Heh, it is kernel- (defaults-) dependent after all. Debian hangs
always, on 3.10, 3.14 and 3.16, Fedora 20 works fine on 3.15. I`ll
check if there are any 82550-specific patches in Fedora tree a bit
later.
It is a setting-dependent issue,
On Tue, Sep 9, 2014 at 7:28 PM, Kirill Batuzov batuz...@ispras.ru wrote:
On Fri, 5 Sep 2014, Andrey Korolyov wrote:
Heh, it is kernel- (defaults-) dependent after all. Debian hangs
always, on 3.10, 3.14 and 3.16, Fedora 20 works fine on 3.15. I`ll
check if there are any 82550-specific
On Thu, Sep 4, 2014 at 8:03 PM, Andrey Korolyov and...@xdel.ru wrote:
On Thu, Sep 4, 2014 at 5:33 PM, Kirill Batuzov batuz...@ispras.ru wrote:
On Thu, 4 Sep 2014, Andrey Korolyov wrote:
Thanks, the launch string can be borrowed from attach here:
On Wed, 3 Sep 2014, Andrey Korolyov wrote:
Given 2.1 and isa-serial output, set as ttyS0 for the guest VM with
9600 baud rate.
The test case is quite simple - display as much data as possible over
serial console and do not hang the system. While qemu-1.1 works
perfectly, with complaining
On Thu, Sep 4, 2014 at 1:46 PM, Kirill Batuzov batuz...@ispras.ru wrote:
On Wed, 3 Sep 2014, Andrey Korolyov wrote:
Given 2.1 and isa-serial output, set as ttyS0 for the guest VM with
9600 baud rate.
The test case is quite simple - display as much data as possible over
serial console and do
On Thu, 4 Sep 2014, Andrey Korolyov wrote:
Thanks, the launch string can be borrowed from attach here:
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg00482.html,
the same VM is going under test.
By hang I mean stopping ability to send icmp replies, it is like a
kind of a
On Thu, Sep 4, 2014 at 5:33 PM, Kirill Batuzov batuz...@ispras.ru wrote:
On Thu, 4 Sep 2014, Andrey Korolyov wrote:
Thanks, the launch string can be borrowed from attach here:
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg00482.html,
the same VM is going under test.
By hang I
Given 2.1 and isa-serial output, set as ttyS0 for the guest VM with
9600 baud rate.
The test case is quite simple - display as much data as possible over
serial console and do not hang the system. While qemu-1.1 works
perfectly, with complaining for lost interrupts (known bug for used
guest
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