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Subject[tip:x86/mm] x86/lguest: Use __pa_symbol instead of __pa on C visible symbols
Commit-ID:  6a3956bd242926f8956992f6ed7805b0811be003
Gitweb: http://git.kernel.org/tip/6a3956bd242926f8956992f6ed7805b0811be003
Author: Alexander Duyck <alexander.h.duyck@intel.com>
AuthorDate: Fri, 16 Nov 2012 13:58:12 -0800
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Fri, 16 Nov 2012 18:11:45 -0800

x86/lguest: Use __pa_symbol instead of __pa on C visible symbols

The function lguest_write_cr3 is using __pa to convert swapper_pg_dir and
initial_page_table from virtual addresses to physical. The correct function
to use for these values is __pa_symbol since they are C visible symbols.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Link: http://lkml.kernel.org/r/20121116215748.8521.83556.stgit@ahduyck-cp1.jf.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/lguest/boot.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 642d880..139dd35 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -552,7 +552,8 @@ static void lguest_write_cr3(unsigned long cr3)
current_cr3 = cr3;

/* These two page tables are simple, linear, and used during boot */
- if (cr3 != __pa(swapper_pg_dir) && cr3 != __pa(initial_page_table))
+ if (cr3 != __pa_symbol(swapper_pg_dir) &&
+ cr3 != __pa_symbol(initial_page_table))
cr3_changed = true;
}


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