From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [RFC][PATCH] kmap_atomic_push
Date: Fri, 09 Oct 2009 00:42:00 +0200
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Cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>, "hugh.dickins" <hugh.dickins@tiscali.co.uk>, David Howells <dhowells@redhat.com>, lkml <linux-kernel@vger.kernel.org>, linux-arch <linux-arch@vger.kernel.org>, jim owens <jowens@hp.com>David Howells <dhowells@redhat.com>


Just to make it clear, the stack design gets rid of crap like:

-#define __KM_PTE                       \
-       (in_nmi() ? KM_NMI_PTE :        \
-        in_irq() ? KM_IRQ_PTE :        \
-        KM_PTE0)

and

-static inline enum km_type crypto_kmap_type(int out)
-{
-       enum km_type type;
-
-       if (in_softirq())
-               type = out * (KM_SOFTIRQ1 - KM_SOFTIRQ0) + KM_SOFTIRQ0;
-       else
-               type = out * (KM_USER1 - KM_USER0) + KM_USER0;
-
-       return type;
-}