Re: [PATCH v5 2/4] x86: add support for earlyprintk via USB3 debug port

Hi Ingo, On 01/19/2017 05:38 PM, Ingo Molnar wrote: > * Lu Baolu wrote: > >> index 8a12199..c4031b9 100644 >> --- a/arch/x86/kernel/early_printk.c >> +++ b/arch/x86/kernel/early_printk.c >> @@ -17,6 +17,7 @@ >> #include >> #include >> #include >> +#include >> #include >> #include >> #

Re: [PATCH v5 2/4] x86: add support for earlyprintk via USB3 debug port

* Lu Baolu wrote: > index 8a12199..c4031b9 100644 > --- a/arch/x86/kernel/early_printk.c > +++ b/arch/x86/kernel/early_printk.c > @@ -17,6 +17,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -381,6 +382,10 @@ static int __init setup_early_prin

[PATCH v5 2/4] x86: add support for earlyprintk via USB3 debug port

Add support for early printk by writing debug messages to the USB3 debug port. Users can use this type of early printk by specifying kernel parameter of "earlyprintk=xdbc". This gives users a chance of providing debug output. The hardware for USB3 debug port requires DMA memory blocks. This requ