x86, boot: use LOAD_PHYSICAL_ADDR on 64 bits

Use LOAD_PHYSICAL_ADDR instead of CONFIG_PHYSICAL_START in the 64-bit
decompression code, for equivalence with the 32-bit code.

[ Impact: cleanup, increases code similarity ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 2b9f251..4135d43 100644 (file)
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -87,7 +87,7 @@ ENTRY(startup_32)
        addl    $(PMD_PAGE_SIZE -1), %ebx
        andl    $PMD_PAGE_MASK, %ebx
 #else
-       movl    $CONFIG_PHYSICAL_START, %ebx
+       movl    $LOAD_PHYSICAL_ADDR, %ebx
 #endif
 
        /* Target address to relocate to for decompression */
@@ -215,7 +215,7 @@ ENTRY(startup_64)
         *
         * If it is a relocatable kernel then decompress and run the kernel
         * from load address aligned to 2MB addr, otherwise decompress and
-        * run the kernel from CONFIG_PHYSICAL_START
+        * run the kernel from LOAD_PHYSICAL_ADDR
         *
         * We cannot rely on the calculation done in 32-bit mode, since we
         * may have been invoked via the 64-bit entry point.
@@ -228,7 +228,7 @@ ENTRY(startup_64)
        andq    $PMD_PAGE_MASK, %rbp
        movq    %rbp, %rbx
 #else
-       movq    $CONFIG_PHYSICAL_START, %rbp
+       movq    $LOAD_PHYSICAL_ADDR, %rbp
        movq    %rbp, %rbx
 #endif