Messages in this thread | | | Subject | Re: udp.c | From | Andi Kleen <> | Date | Tue, 14 Jun 2005 01:53:56 +0200 |
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"David S. Miller" <davem@davemloft.net> writes:
> From: Herbert Xu <herbert@gondor.apana.org.au> > Date: Tue, 14 Jun 2005 09:04:22 +1000 > >> On Mon, Jun 13, 2005 at 02:57:16PM -0700, David S. Miller wrote: >> > From: Herbert Xu <herbert@gondor.apana.org.au> >> > Date: Tue, 14 Jun 2005 07:42:52 +1000 >> > >> > > It'll dump the stack anyway if we just make it a NULL pointer. >> > >> > Some platforms don't handle that very cleanly, for example >> > it may be necessary to have something mapped at page zero >> > for one reason or another. >> >> Are there any existing platforms that do that in kernel mode? > > X86 did, especially during bootup, for a long time.
Still does, as does x86-64, but actually it could be changed now using change_page_attr (and then later undoing it). Is it worth it?
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