diff options
| author | Huang Ying <ying.huang@intel.com> | 2008-10-31 09:48:02 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-31 10:01:55 +0100 |
| commit | 31498a01496ffca3b542bae72b8ec499cd9302db (patch) | |
| tree | 8ae851f09116cd3b2b25a2e266308522c28e20a3 | |
| parent | 721d5dfe7e516954c501d5e9d0dfab379cf4241a (diff) | |
| download | lwn-31498a01496ffca3b542bae72b8ec499cd9302db.tar.gz lwn-31498a01496ffca3b542bae72b8ec499cd9302db.zip | |
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>
| -rw-r--r-- | arch/x86/kernel/relocate_kernel_32.S | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S index 6f50664b2ba5..377da3f78e8c 100644 --- 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 */ |