Re: [PATCH][MTHCA] fix sparc build WAS: Re: [openib-general] [PATCH][RFC][3/4] IB: userspace verbs mthca changes

David S. Miller
2005-04-21T00:44:56Z

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.