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[Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read
From: |
Alexander Graf |
Subject: |
[Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read |
Date: |
Sat, 15 May 2010 10:37:03 +0200 |
On 15.05.2010, at 10:36, Jan Kiszka wrote:
> Alexander Graf wrote:
>> On 14.05.2010, at 18:17, Jan Kiszka wrote:
>>> Alexander Graf wrote:
>>>> Now that I can finally reproduce the bug with --enable-io-thread, I can
>>>> verify that it does *not* fix the issue.
>>> I do not trust your tests. :p
>>>
>>> I just tried to reproduce with --enable-io-thread and the setup I
>>> described above - all still fine here. Can you reproduce with an x86 guest?
>>
>> Nope, it works fine with an x86 guest. I put the following in /etc/inittab
>> of my guest:
>>
>> 11:2345:respawn:/sbin/mingetty --noclear /dev/hvc0 linux
>>
>> One major thing to keep in mind when talking about s390 guests is that we
>> almost never trap into userspace.
>
> Do you have the same problem when using an unbuffered backend, e.g. pty?
> Maybe that single-byte "fifo" of stdio makes the difference, though I
> wonder why only on s390 (guest exists should not block the polling done
> by the io-thread, just accelerate it).
Mind to give me a small example on how to use that? :)
Alex
- [Qemu-devel] Re: [PATCH] [RESEND] Make char muxer more robust wrt small FIFOs, (continued)
- [Qemu-devel] Re: [PATCH] [RESEND] Make char muxer more robust wrt small FIFOs, Alexander Graf, 2010/05/05
- [Qemu-devel] [PATCH] char: Flush read buffer in mux_chr_can_read, Jan Kiszka, 2010/05/05
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Alexander Graf, 2010/05/11
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Jan Kiszka, 2010/05/11
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Alexander Graf, 2010/05/11
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Jan Kiszka, 2010/05/12
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Alexander Graf, 2010/05/14
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Jan Kiszka, 2010/05/14
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Alexander Graf, 2010/05/15
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Jan Kiszka, 2010/05/15
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read,
Alexander Graf <=
- [Qemu-devel] Re: [PATCH] char: Flush read buffer in mux_chr_can_read, Jan Kiszka, 2010/05/15