[PATCH 5/11] i386: Reserve kernel memory starting from _text

[Vivek Goyal <vgoyal@in.ibm.com>]

Currently when we are reserving the memory the kernel text
resides in we start at __PHYSICAL_START which happens to be
correct but not very obvious.  In addition when we start relocating
the kernel __PHYSICAL_START is the wrong value, as it is an
absolute symbol that does not get relocated.

By starting the reservation at __pa_symbol(_text)
the code is clearer and will be correct when relocated.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
---

 arch/i386/kernel/setup.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN arch/i386/kernel/setup.c~i386-setup.c-Reserve-kernel-memory-starting-from-_text arch/i386/kernel/setup.c
--- linux-2.6.19-rc2-git7-reloc/arch/i386/kernel/setup.c~i386-setup.c-Reserve-kernel-memory-starting-from-_text	2006-10-23 13:15:21.000000000 -0400
+++ linux-2.6.19-rc2-git7-reloc-root/arch/i386/kernel/setup.c	2006-10-23 13:15:21.000000000 -0400
@@ -1118,8 +1118,8 @@ void __init setup_bootmem_allocator(void
 	 * the (very unlikely) case of us accidentally initializing the
 	 * bootmem allocator with an invalid RAM area.
 	 */
-	reserve_bootmem(__PHYSICAL_START, (PFN_PHYS(min_low_pfn) +
-			 bootmap_size + PAGE_SIZE-1) - (__PHYSICAL_START));
+	reserve_bootmem(__pa_symbol(_text), (PFN_PHYS(min_low_pfn) +
+			 bootmap_size + PAGE_SIZE-1) - __pa_symbol(_text));
 
 	/*
 	 * reserve physical page 0 - it's a special BIOS page on many boxes,
_