From: Franck Bui-Huu <vagabon.xyz@gmail.com>
Date: Thu, 19 Oct 2006 11:20:02 +0000 (+0200)
Subject: [MIPS] Introduce __pa_symbol()
X-Git-Tag: v2.6.20-rc1~34^2~40^2~469^2~27
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8431fd094d625b94d364fe393076ccef88e6ce18;p=linux-2.6

[MIPS] Introduce __pa_symbol()

This patch introduces __pa_symbol() macro which should be used to
calculate the physical address of kernel symbols. It also relies
on RELOC_HIDE() to avoid any compiler's oddities when doing
arithmetics on symbols.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index c3b13dedf2..0dc1a45c27 100644
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -142,6 +142,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #define __pa_page_offset(x)	PAGE_OFFSET
 #endif
 #define __pa(x)			((unsigned long)(x) - __pa_page_offset(x))
+#define __pa_symbol(x)		__pa(RELOC_HIDE((unsigned long)(x),0))
 #define __va(x)			((void *)((unsigned long)(x) + PAGE_OFFSET))
 
 #define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)