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Date: Wed, 20 Apr 2005 17:38:20 -0700
From: "David S. Miller" <davem@davemloft.net>
To: Tom Duffy <tduffy@sun.com>
Cc: roland@topspin.com, linux-kernel@vger.kernel.org,
       openib-general@openib.org
Subject: Re: [PATCH][MTHCA] fix sparc build WAS: Re: [openib-general]
 [PATCH][RFC][3/4] IB: userspace verbs mthca changes
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On Wed, 20 Apr 2005 17:37:11 -0700
Tom Duffy <tduffy@sun.com> wrote:

> This breaks building on sparc64:
 ...
> This is ugly, but fixes the build.  Perhaps sparc needs
> pgprot_noncached() to be a noop?

No, it should actually do something, like so:

include/asm-sparc64/pgtable.h: af9bf175a223cf44310293287d50302e0fd3f9e9
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -416,6 +416,11 @@ extern int io_remap_pfn_range(struct vm_
 			       unsigned long pfn,
 			       unsigned long size, pgprot_t prot);
 
+/* Clear virtual and physical cachability, set side-effect bit.  */
+#define pgprot_noncached(prot) \
+	(__pgprot((pgprot_val(prot) & ~(_PAGE_CP | _PAGE_CV)) | \
+	 _PAGE_E))
+
 /*
  * For sparc32&64, the pfn in io_remap_pfn_range() carries <iospace> in
  * its high 4 bits.  These macros/functions put it there or get it from there.
-
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