 | | | IBM x236 - EM64T SMP Kernel Crash | IBM x236 - EM64T SMP Kernel Crash 2005-04-30 - By Arjan van de Ven
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On Sat, 2005-04-30 at 18:45 +0300, Celal UNALP wrote:
> Why should I do that way?
eh because you paid for RHN and support and because up2date gets it
right (at least most of the time)?
> Is it supposed to be x86_64 distro for EM64T
> machines?
RHEL3 U2 added support for em64t. This required a separate sets of
kernels (due to the compatibility constraints within a rhel release it
was judged safer to do separate kernels than to weld em64t support, also
known as ia32e at that time, into the existing kernel).
As a result, on em64t machines you need to install the ia32e.rpm kernel,
not the x86_64.rpm kernels. up2date and anaconda are supposed to pick
the right kernel automatically for you; if you want to install kernels
by hand anyway be sure to also only pick the .ia32e.rpm kernel rpms.
For RHEL4 there is only one set of kernels again, in the new release we
could do a "proper" integration, due to the obvious "we change the world
anyway so we can do this too". For RHEL3 that was just not the right
thing to do, the instruction set difference and other hardware
differences between amd64 and em64t were too big for our taste to adjust
the existing kernels for it.
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