On Mon, 2008-09-29 at 11:40 +0300, Tomas Winkler wrote:
> On Mon, Sep 29, 2008 at 11:27 AM, Andres Freund <[email protected]> wrote:
> > Hi,
> >
> > On Saturday 27 September 2008, Tomas Winkler wrote in "Re: bad DMAR
> > interaction with iwlagn and SATA":
> >> Meanwhile it all reported bugs in this case points to 64 bit
> >> installations, I'll give it more testing
> > Would it help to test on 32bit? I have some dissk with 32bit system installed
> > lying around somewhere...
>
> It would help to try to isolate this as 64 bit issue
Andres, can you post your config?
johannes
Hi,
On Monday 06 October 2008, Johannes Berg wrote in "Re: bad DMAR interaction
with iwlagn and SATA":
> > > Would it help to test on 32bit? I have some dissk with 32bit system
> > > installed lying around somewhere...
> > It would help to try to isolate this as 64 bit issue
Btw, will do so later this evening having access to the older harddisk (with
32bit install) again.
> Andres, can you post your config?
Sure, my current running one is attached.
The config I had the error with was exactly the same just with CONFIG_DMAR and
e1000e enabled (but is overwritten now)...
Its no problem trying another branch more debugging options or so if needed.
Andres
On Mon, 2008-10-06 at 16:32 +0200, Andres Freund wrote:
> > Andres, can you post your config?
> Sure, my current running one is attached.
> The config I had the error with was exactly the same just with CONFIG_DMAR and
> e1000e enabled (but is overwritten now)...
>
> Its no problem trying another branch more debugging options or so if needed.
No, I was just wondering whether x86-64 had something like powerpc's
CONFIG_64K_PAGES, but it doesn't seem to. 2M-page support seems to be
used always dependent on the CPU, but I have no idea you can tell
whether or not your CPU supports that.
johannes
On Tue, Oct 07, 2008 at 10:37:16AM +0200, Johannes Berg wrote:
> On Mon, 2008-10-06 at 16:32 +0200, Andres Freund wrote:
>
> > > Andres, can you post your config?
> > Sure, my current running one is attached.
> > The config I had the error with was exactly the same just with CONFIG_DMAR and
> > e1000e enabled (but is overwritten now)...
> >
> > Its no problem trying another branch more debugging options or so if needed.
>
> No, I was just wondering whether x86-64 had something like powerpc's
> CONFIG_64K_PAGES, but it doesn't seem to. 2M-page support seems to be
> used always dependent on the CPU, but I have no idea you can tell
> whether or not your CPU supports that.
>
2MB pages (and 4MB pages) are dependent on PSE/PAE, there's no configurable
page size on x86 like there is on other platforms.
PSE gives you 4MB pages, PAE reduces your 4MB pages to 2MB pages (for
extra flag and address bits.)
About the only useful places for these are large mappings like ioremap
and whatnot.
regards, Kyle
On Tue, 2008-10-07 at 13:04 -0400, Kyle McMartin wrote:
> 2MB pages (and 4MB pages) are dependent on PSE/PAE, there's no configurable
> page size on x86 like there is on other platforms.
>
> PSE gives you 4MB pages, PAE reduces your 4MB pages to 2MB pages (for
> extra flag and address bits.)
>
> About the only useful places for these are large mappings like ioremap
> and whatnot.
Thanks for the explanation. Can you explain too why iwlwifi crashes when
I enable 64k pages? ;)
johannes