Re: [PATCH 1/2] elf loader support for auxvec base platform string

2 messages, 2 authors, 2008-07-07 · open the first message on its own page

Re: [PATCH 1/2] elf loader support for auxvec base platform string

From: Andreas Schwab <hidden>
Date: 2008-07-07 10:01:25

Roland McGrath [off-list ref] writes:
There are 32 bits free now.  One can anticipate that reassigning a bit
would come up only after these are exhausted.  With prudent use, this
will take a very long time to happen.  Then the oldest CPU type string
might be retired to reuse its bit.  It seems unlikely that there will
be a single installation (root directory) that really needs to have
installed both a kernel optimized for the oldest CPU model known and a
kernel optimized for the newest CPU model known.
The kernel does not have to come from the same place as the root
filesystem.  You may want to run a new kernel with an old filesystem, or
vice-versa.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: [PATCH 1/2] elf loader support for auxvec base platform string

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2008-07-07 22:57:17

On Mon, 2008-07-07 at 12:01 +0200, Andreas Schwab wrote:
Roland McGrath [off-list ref] writes:
quoted
There are 32 bits free now.  One can anticipate that reassigning a bit
would come up only after these are exhausted.  With prudent use, this
will take a very long time to happen.  Then the oldest CPU type string
might be retired to reuse its bit.  It seems unlikely that there will
be a single installation (root directory) that really needs to have
installed both a kernel optimized for the oldest CPU model known and a
kernel optimized for the newest CPU model known.
The kernel does not have to come from the same place as the root
filesystem.  You may want to run a new kernel with an old filesystem, or
vice-versa.
I agree, I'm pretty dubious here...

Cheers,
Ben.
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