[vbox-dev] Enabling ahciLog()?

[Pilsung Kang]

On Fri, Aug 12, 2011 at 8:17 PM, Frank Mehnert <frank.mehnert at oracle.com> wrote:
> Pilsung,
>
> please keep this conversation on the list so others will have a chance
> to follow it.
>

Thanks, Frank. I was forgetting about that.

> On Friday 12 August 2011 12:38:20 Pilsung Kang wrote:
>> On Fri, Aug 12, 2011 at 5:29 PM, Frank Mehnert <frank.mehnert at oracle.com>
> wrote:
>> > On Friday 12 August 2011 02:10:32 Pilsung Kang wrote:
>> >> Hi,
>> >>
>> >> Can some one help in enabling ahciLog() in DevAHCI.cpp? I've read
>> >> related threads in this forum and tried all the methods I can think
>> >> of, but was unsuccessful. For example, VBOX_LOG=+dev_ahci.e.l.l2.f
>> >> didn't work for me. Any hints would be appreciated.
>> >
>> > First, make sure that the VBOX_LOG environment variable is properly
>> > exported.
>>
>> Thanks. So exporting VBOX_LOG like 'export
>> VBOX_LOG=+dev_ahci.e.l.l2.f' would work? I am asking this because I
>> don't see the 'dev_ahci' log group in
>> src/VBox/Runtime/VBox/log-vbox.cpp.
>
> Yes, that declaration is correct. Note that the groups are defined in
> include/VBox/log.h and "DEV_AHCI" is definedas part of VBOX_LOGGROUP_NAMES.
>

Thanks for confirming this.

>> > Using a normal debug build you will get the userlevel (R3) log messages.
>> > To also get the R0 log messages you have to do a debug build of your
>> > kernel modules as well
>>
>> As long as ahciLog() works, it doesn't matter to me if it's R3 or R0
>> logging. Is R0 logging necessary to enable ahciLog()?
>
> R0 logging is necessary to catch the ring0 messages. Some code may run
> under different contexts and without the R0 logging you will miss messages
> from the R0 context. Might or might not be important for you.
>

Ok, thanks for your answers. I'll go and try to build virtualbox as
you kindly explained.

By the way, can I ask one more question? I previously built a debug
version of virtualbox to use gdb to follow DevAHCI.cpp, but when I
wanted to set a breakpoint in DevAHCI.cpp, it didn't work with the
message like 'No source file named DevAHCI.cpp'. Can you tell me what
went wrong?

Thanks a lot.

Pilsung