kexec/i386: remove PAGE_SIZE alignment from relocate_kernel

Impact: save kernel .text by loosening kexec page alignment

This patch removes PAGE_SIZE alignment from relocate_kernel(). Before
kexec jump patches are merged, control page is mapped to
relocate_kernel in kexec page tables, so relocate_kernel must be
PAGE_SIZE aligned. Now, control page is mapped to identity mapped
address, so relocate_kernel need not to be PAGE_SIZE aligned any
more. This can reduce a few KB from kernel text segement.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S
index 6f50664b2ba50564dfbf10c017f52bcc247a9af8..377da3f78e8c0d84840af96250429b2a57908788 100644 (file)
--- a/arch/x86/kernel/relocate_kernel_32.S
+++ b/arch/x86/kernel/relocate_kernel_32.S
@@ -39,7 +39,6 @@
 #define CP_PA_BACKUP_PAGES_MAP DATA(0x1c)
 
        .text
-       .align PAGE_SIZE
        .globl relocate_kernel
 relocate_kernel:
        /* Save the CPU context, used for jumping back */