Re: [PATCH 2/2] pio cleanup, split kvm_setup_pio() in two functions

[Laurent Vivier <Laurent.Vivier-6ktuUTfB/bM@public.gmane.org>]

[-- Attachment #1.1: Type: text/plain, Size: 1074 bytes --]

Dong, Eddie wrote:
> kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org wrote:
>>>> I may confuse you. Currently master doesn't do in kernel PIO
>>>> emulation, all string PIO will go to user level which is fine.  With
>>>> lapic3, we have kernel PIO emulation for PIC. Linux doesn;t use
>>>> string PIO for PIC (port 0x20/0x21) but XP and Win2003 does. So can
>>>> u test kernel string PIO?
>>> Yes, I should be able, just explain me what and how...
>>>
>>> Laurent
>> Just check out both lapic3 user & kernel branch
>> (may need to rebase to master). And try to boot XP
>> guest like you do for master.
>> thanks, eddie
> BTW, I did a quick try, it broke Windows XP & 2003.
> in kernel PIC get wrong initial value (port 0x20).

I think I know why it doesn't work: I suppose when it exits from kvm_setup_pio()
that pio.count is different from 0... which is not the case with in-kernel io.

Regards,
Laurent
-- 
------------- Laurent.Vivier-6ktuUTfB/bM@public.gmane.org  --------------
          "Software is hard" - Donald Knuth


[-- Attachment #1.2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

[-- Attachment #2: Type: text/plain, Size: 315 bytes --]

-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >>  http://get.splunk.com/

[-- Attachment #3: Type: text/plain, Size: 186 bytes --]

_______________________________________________
kvm-devel mailing list
kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
https://lists.sourceforge.net/lists/listinfo/kvm-devel