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authorH. Peter Anvin <hpa@linux.intel.com>2014-01-29 21:07:00 +0400
committerH. Peter Anvin <hpa@linux.intel.com>2014-01-29 21:07:00 +0400
commit4064e0ea3c0e9427e6c22392c4b69b4bfa1b7125 (patch)
tree888b52771f540552a9dc85521d8dddf66eba9aeb /arch/x86/realmode
parent9b3965f7401b0cc3ed2c228085a4c13b1c9243b1 (diff)
parentf4bcd8ccddb02833340652e9f46f5127828eb79d (diff)
downloadlinux-4064e0ea3c0e9427e6c22392c4b69b4bfa1b7125.tar.xz
Merge commit 'f4bcd8ccddb02833340652e9f46f5127828eb79d' into x86/build
Bring in upstream merge of x86/kaslr for future patches. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/realmode')
-rw-r--r--arch/x86/realmode/init.c26
-rw-r--r--arch/x86/realmode/rm/reboot.S1
-rw-r--r--arch/x86/realmode/rm/trampoline_32.S1
-rw-r--r--arch/x86/realmode/rm/trampoline_64.S1
4 files changed, 12 insertions, 17 deletions
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index a44f457e70a1..bad628a620c4 100644
--- a/arch/x86/realmode/init.c
+++ b/arch/x86/realmode/init.c
@@ -29,12 +29,10 @@ void __init reserve_real_mode(void)
void __init setup_real_mode(void)
{
u16 real_mode_seg;
- u32 *rel;
+ const u32 *rel;
u32 count;
- u32 *ptr;
- u16 *seg;
- int i;
unsigned char *base;
+ unsigned long phys_base;
struct trampoline_header *trampoline_header;
size_t size = PAGE_ALIGN(real_mode_blob_end - real_mode_blob);
#ifdef CONFIG_X86_64
@@ -46,23 +44,23 @@ void __init setup_real_mode(void)
memcpy(base, real_mode_blob, size);
- real_mode_seg = __pa(base) >> 4;
+ phys_base = __pa(base);
+ real_mode_seg = phys_base >> 4;
+
rel = (u32 *) real_mode_relocs;
/* 16-bit segment relocations. */
- count = rel[0];
- rel = &rel[1];
- for (i = 0; i < count; i++) {
- seg = (u16 *) (base + rel[i]);
+ count = *rel++;
+ while (count--) {
+ u16 *seg = (u16 *) (base + *rel++);
*seg = real_mode_seg;
}
/* 32-bit linear relocations. */
- count = rel[i];
- rel = &rel[i + 1];
- for (i = 0; i < count; i++) {
- ptr = (u32 *) (base + rel[i]);
- *ptr += __pa(base);
+ count = *rel++;
+ while (count--) {
+ u32 *ptr = (u32 *) (base + *rel++);
+ *ptr += phys_base;
}
/* Must be perfomed *after* relocation. */
diff --git a/arch/x86/realmode/rm/reboot.S b/arch/x86/realmode/rm/reboot.S
index f932ea61d1c8..d66c607bdc58 100644
--- a/arch/x86/realmode/rm/reboot.S
+++ b/arch/x86/realmode/rm/reboot.S
@@ -1,5 +1,4 @@
#include <linux/linkage.h>
-#include <linux/init.h>
#include <asm/segment.h>
#include <asm/page_types.h>
#include <asm/processor-flags.h>
diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S
index c1b2791183e7..48ddd76bc4c3 100644
--- a/arch/x86/realmode/rm/trampoline_32.S
+++ b/arch/x86/realmode/rm/trampoline_32.S
@@ -20,7 +20,6 @@
*/
#include <linux/linkage.h>
-#include <linux/init.h>
#include <asm/segment.h>
#include <asm/page_types.h>
#include "realmode.h"
diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index bb360dc39d21..dac7b20d2f9d 100644
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -25,7 +25,6 @@
*/
#include <linux/linkage.h>
-#include <linux/init.h>
#include <asm/pgtable_types.h>
#include <asm/page_types.h>
#include <asm/msr.h>