On Tue, 2 Jun 2015, Bin Gao wrote:
> On Tue, Jun 02, 2015 at 11:07:39PM +0200, Thomas Gleixner wrote:
> > What about the memory mapped uarts which have been source of trouble
> > in the past?
> >
> > Thanks,
> >
> > tglx
>
> Not sure which specific early console you are referring to.
> Curr
On Wed, Jun 03, 2015 at 08:35:29AM -0400, Peter Hurley wrote:
> > +/* x86 uses "earlyprintk=xxx", so we keep the compatibility here */
> > +#ifdef CONFIG_X86
> > +static int __init param_setup_earlycon_x86(char *buf)
> > +{
> > + return param_setup_earlycon(buf);
> > +}
> > +early_param("earlypri
Gnomes; Peter Hurley; Jiri Slaby; Borislav Petkov; Anderson, Stuart
> R; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v5 2/2] arch/x86: remove pci uart early console from
> early_prink.c
>
> On Tue, Jun 02, 2015 at 11:07:39PM +0200, Thomas Gleixner wrote:
>> What
On 05/29/2015 02:41 PM, Bin Gao wrote:
> The arch independent uart8250 early console driver has good
> support for memory mapped and io port based 8250 uarts. Since
> pci is arch independent so it's natural to extend uart8250 to
> support mem, io and pci. Hence pci uart early console in
> arch/x86/
On Wed, Jun 03, 2015 at 12:16:36AM +, Anderson, Stuart R wrote:
> Bin, et al,
>
> What we are losing here is the ability to specify a UART by its bus address
> instead of just supplying the memory or io address. There are some cases
> where this is useful, though I admit it is probably not goi
On Tue, Jun 02, 2015 at 01:37:52PM -0700, Yinghai Lu wrote:
> how about
> earlyprintk=serial,ttyS0
> earlyprintk=ttyS0
>
> Thanks
>
> Yinghai
Yes, both work.
-Bin
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Mor
; H. Peter Anvin; Greg Kroah-Hartman; One Thousand
Gnomes; Peter Hurley; Jiri Slaby; Borislav Petkov; Anderson, Stuart R;
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 2/2] arch/x86: remove pci uart early console from
early_prink.c
On Tue, Jun 02, 2015 at 11:07:39PM +0200, Thomas Glei
On Tue, Jun 02, 2015 at 11:07:39PM +0200, Thomas Gleixner wrote:
> What about the memory mapped uarts which have been source of trouble
> in the past?
>
> Thanks,
>
> tglx
Not sure which specific early console you are referring to.
Currently we have serial, ttyS, vga, dbgp, xen, efi and pc
On Tue, Jun 02, 2015 at 11:46:02PM +0200, Ingo Molnar wrote:
> So the format on x86 used to be:
>
> earlyprintk=serial,ttyS0,115200
>
> does that work too?
>
> Thanks,
>
> Ingo
Just tested it, and yes it works.
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* Bin Gao wrote:
> On Tue, Jun 02, 2015 at 01:54:33PM +0200, Ingo Molnar wrote:
> >
> > * Bin Gao wrote:
> >
> > > The arch independent uart8250 early console driver has good support for
> > > memory
> > > mapped and io port based 8250 uarts. Since pci is arch independent so
> > > it's
>
On Tue, 2 Jun 2015, Bin Gao wrote:
> On Tue, Jun 02, 2015 at 01:54:33PM +0200, Ingo Molnar wrote:
> >
> > * Bin Gao wrote:
> >
> > > The arch independent uart8250 early console driver has good support for
> > > memory
> > > mapped and io port based 8250 uarts. Since pci is arch independent so
On Tue, Jun 2, 2015 at 12:20 PM, Bin Gao wrote:
>>
>> In what way have you tested this change, does serial-earlyprintk still work
>> on x86
>> after the change?
>
> Yes, this patch was tested with earlyprintk=serial,0x3f8 on my x86 box and
> the early console worked fine.
how about
earlyprintk=s
On Tue, Jun 02, 2015 at 01:54:33PM +0200, Ingo Molnar wrote:
>
> * Bin Gao wrote:
>
> > The arch independent uart8250 early console driver has good support for
> > memory
> > mapped and io port based 8250 uarts. Since pci is arch independent so it's
> > natural to extend uart8250 to support m
* Bin Gao wrote:
> The arch independent uart8250 early console driver has good support for
> memory
> mapped and io port based 8250 uarts. Since pci is arch independent so it's
> natural to extend uart8250 to support mem, io and pci. Hence pci uart early
> console in arch/x86/kernel_printk.c
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