Re: [Qemu-devel] Guest application reading from pl011 without device driver

[Jiahuan Zhang]

Hi, here are the patch files for char-pipe.c, char-win.c, char-win.h


On 23 March 2017 at 18:31, Paolo Bonzini <address@hidden> wrote:

>
>
> On 23/03/2017 18:28, Jiahuan Zhang wrote:
> > Hi, the method doesn't work for pipe. It still causes the same issue.
> > The only difference is that the first byte in the UART fifo can be read
> > by the guest app.
> > So now my guest app can immediately read 17bytes when the host is
> > sending data continuously,
> > then guest app is unable to read.
> >
> > Now there is a solution-to-be. Set the qemu pipe chardev to wait for 1
> > millisecond before do a next ReadFile(),
> > then the pl011 can deliver the complete large data by the 16-byte fifo
> > continuously to the guest app.
> >
> > Is it rational? Or is this host -CPU-dependent?
>
> Post the patch, maybe you have a bug.
>
> Paolo
>

char-pipe.patch
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char-win.h.patch
Description: Binary data

char-win.patch
Description: Binary data