Re: OF-related boot crash in 3.3.0-rc3-00188-g3ec1e88

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On 22/02/2012 00:36, Meelis Roos wrote:
Meelis, can you please apply the following patch before&  after the
offending commit, boot with "memblock=debug" added as kernel param and
post the boot log?  The patch will generate some offset warnings after
the commit but should work fine.

Before the commit (v3.2-rc3-75-g0ee332c): memblock1.gz (attached)
After the commit (v3.2-rc3-76-g7bd0b0f): memblock2.gz (attached)

Its a long time since I regularly had to worry about SPARC boxes (not) booting so may be the difference between virtual & physical addresses but I notice that some of the addresses in the register dump have non-zero values in the upper 32 bits but the memblock values have zero in the upper half.


memblock reserved: ADD [0x0000007fcc0a40-0x0000007fcc0a4e] node 1
memblock reserved: add [0x0000007fcc0a40-000000007fcc0a4e] node 1 @767

But a similar address in the registers has fffff800 in there.

o4: fffff8007fcc0a4d

I know that there are a number of explanations why things would be different (32 bit acesses etc) but it could explain things plus we would be talking 64 bit addresses in the kernel.

Just a thought.

Richard


In addition, a third type of sparc machines breaks in a third way - V210
and V240 just hang after telling

console [tty0] enabled, bootconsole disabled

and before calibrating the delay loop. Bisect has led to the same commit.

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