Re: [Xen-devel] [PATCH v2] xen/arm: initialize vpl011 flag register

2019-11-26 Thread Jeff Kubascik
On 11/25/2019 5:17 PM, Julien Grall wrote: > Hi, > > On 25/11/2019 20:58, Jeff Kubascik wrote: >> The tx/rx fifo flags were not set when the vpl011 is initialized. This >> is a problem for certain guests that are operating in polled mode, as a >> guest will generally check the rx fifo empty flag t

Re: [Xen-devel] [PATCH v2] xen/arm: initialize vpl011 flag register

2019-11-25 Thread Julien Grall
Hi, On 25/11/2019 20:58, Jeff Kubascik wrote: The tx/rx fifo flags were not set when the vpl011 is initialized. This is a problem for certain guests that are operating in polled mode, as a guest will generally check the rx fifo empty flag to determine if there is data before doing a read. The re

[Xen-devel] [PATCH v2] xen/arm: initialize vpl011 flag register

2019-11-25 Thread Jeff Kubascik
The tx/rx fifo flags were not set when the vpl011 is initialized. This is a problem for certain guests that are operating in polled mode, as a guest will generally check the rx fifo empty flag to determine if there is data before doing a read. The result is a continuous spam of the message "vpl011: