Messages in this thread | | | Date | Sat, 31 Jan 2009 12:24:36 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: do not expose CONFIG_BSWAP to userspace |
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Maciej W. Rozycki wrote: > On Wed, 28 Jan 2009, Harvey Harrison wrote: > >> Well, that's unfortunate, how about we just export the BSWAP version >> unconditionally and hope pure i386 just goes away someday? > > Or just emulate it alongside CMPXCHG and XADD? ;)
That would work unless someone actually cares about 386 or 486 in the embedded space. I think at least 486EX is still used as an embedded platform.
The kernel can obviously provide this service (although it slows down the #UD handler), but anyone who actually cares about these chips would not really want them.
At some point, we may want to ask ourselves how long keeping 386 support (with it's broken WP handling) alive.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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