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Re: Is AMD64 page out of date about W^X?

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From: <rwaite1@...>
To: <misc@...>
Cc: <www@...>
Subject: Re: Is AMD64 page out of date about W^X?
Date: Friday, September 21, 2007 - 2:48 pm

I sent a message and it looks like it got rejected... basically I found out that ia32e is EM64T(Intel's marketing name for it).

I was thinking it was the itanium arch which is actually ia64. But either way...

EM64T is supposed to run on AMD64... and it appears that the Intel chips do support the NXE bit since around 2005.

Can anyone confirm that the newer ia32e chips (made after early 2005) are actually supporting W^X? It seems that just because NXE is shown in the dmesg wouldn't necessarily mean that OpenBSD would then use it.

If it is indeed supported.. could someone change the message on the AMD64 page? http://www.openbsd.org/amd64.html

It does seem useful to know this information for this platform and I have veered away from AMD64 for the last year because of it.
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Re: Is AMD64 page out of date about W^X?, , (Fri Sep 21, 2:48 pm)
Re: Is AMD64 page out of date about W^X?, Adriaan, (Fri Sep 21, 3:37 pm)