Problems with AMD64 and 8 GB RAM?

[Scott Long]

Greg 'groggy' Lehey wrote:
> On Wednesday, 30 March 2005 at 16:04:44 -0700, Scott Long wrote:
> 
>>Greg 'groggy' Lehey wrote:
>>
>>>On Wednesday, 30 March 2005 at 15:30:37 -0700, Scott Long wrote:
>>>
>>>
>>>>Greg 'groggy' Lehey wrote:
>>>>
>>>>
>>>>>I've recently acquired an AMD64 box ...
>>>>>
>>>>>What's unstable?  ... The amd64 5.4-PRERELEASE kernel just
>>>>>hangs/freezes.
>>>>
>>>>5.3-RELEASE has a lot of problems with >4GB due to busdma issues.
>>>>Those should no longer be an issue in RELENG_5, including 5.4-PRE.
>>>
>>>They appear to be.
>>
>>I don't understand what you mean here.
> 
> 
> As I said above (and trimmed for convenience), this problem occurs on
> 5.4-PRERELEASE as of yesterday morning.  The dmesg shows that too.
> 

And you're certain that it's due to the same busdma issues that I was
describing?  I must have missed the evidence that you use to support
this.

> 
>>>As I described, it doesn't appear to be the drivers.
>>
>>I don't see how you proved or disproved this.
> 
> 
> Shall I resend the original message?  It seems independent of any
> particular driver.  That's not proof, of course, but I didn't claim it
> was.

Again, I must have missed the part where you investigated the drivers
that apply to your particular system.  I highly doubt that they apply to
every 8GB Opteron system available on the market.

Scott