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| author | Jiri Slaby <jslaby@suse.cz> | 2019-10-11 13:50:43 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2019-10-18 09:53:19 +0200 |
| commit | 6ec2a968247e51535e08dbbbfc8f53c95a48cde0 (patch) | |
| tree | 3b53c11f6c7a80e6138b86e13d14717bdb875a71 /arch/x86/kernel/relocate_kernel_32.S | |
| parent | 37503f734e9de314c4e9a1eba33e9e7d8ec80839 (diff) | |
| download | linux-6ec2a968247e51535e08dbbbfc8f53c95a48cde0.tar.bz2 | |
x86/asm: Annotate relocate_kernel_{32,64}.c
There are functions in relocate_kernel_{32,64}.c which are not
annotated. This makes automatic annotations on them rather hard. So
annotate all the functions now.
Note that these are not C-like functions, so FUNC is not used. Instead
CODE markers are used. Also the functions are not aligned, so the
NOALIGN versions are used:
- SYM_CODE_START_NOALIGN
- SYM_CODE_START_LOCAL_NOALIGN
- SYM_CODE_END
The result is:
0000 108 NOTYPE GLOBAL DEFAULT 1 relocate_kernel
006c 165 NOTYPE LOCAL DEFAULT 1 identity_mapped
0146 127 NOTYPE LOCAL DEFAULT 1 swap_pages
0111 53 NOTYPE LOCAL DEFAULT 1 virtual_mapped
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Alexios Zavras <alexios.zavras@intel.com>
Cc: Allison Randal <allison@lohutok.net>
Cc: Enrico Weigelt <info@metux.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-arch@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20191011115108.12392-4-jslaby@suse.cz
Diffstat (limited to 'arch/x86/kernel/relocate_kernel_32.S')
| -rw-r--r-- | arch/x86/kernel/relocate_kernel_32.S | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S index ee26df08002e..94b33885f8d2 100644 --- a/arch/x86/kernel/relocate_kernel_32.S +++ b/arch/x86/kernel/relocate_kernel_32.S @@ -35,8 +35,7 @@ #define CP_PA_BACKUP_PAGES_MAP DATA(0x1c) .text - .globl relocate_kernel -relocate_kernel: +SYM_CODE_START_NOALIGN(relocate_kernel) /* Save the CPU context, used for jumping back */ pushl %ebx @@ -93,8 +92,9 @@ relocate_kernel: addl $(identity_mapped - relocate_kernel), %eax pushl %eax ret +SYM_CODE_END(relocate_kernel) -identity_mapped: +SYM_CODE_START_LOCAL_NOALIGN(identity_mapped) /* set return address to 0 if not preserving context */ pushl $0 /* store the start address on the stack */ @@ -191,8 +191,9 @@ identity_mapped: addl $(virtual_mapped - relocate_kernel), %eax pushl %eax ret +SYM_CODE_END(identity_mapped) -virtual_mapped: +SYM_CODE_START_LOCAL_NOALIGN(virtual_mapped) movl CR4(%edi), %eax movl %eax, %cr4 movl CR3(%edi), %eax @@ -208,9 +209,10 @@ virtual_mapped: popl %esi popl %ebx ret +SYM_CODE_END(virtual_mapped) /* Do the copies */ -swap_pages: +SYM_CODE_START_LOCAL_NOALIGN(swap_pages) movl 8(%esp), %edx movl 4(%esp), %ecx pushl %ebp @@ -270,6 +272,7 @@ swap_pages: popl %ebx popl %ebp ret +SYM_CODE_END(swap_pages) .globl kexec_control_code_size .set kexec_control_code_size, . - relocate_kernel |