From cb18ef0da259db611fbf52806592fde5f469ae67 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 9 May 2016 13:22:05 -0700 Subject: [PATCH] x86/boot: Add missing file header comments There were some files with missing header comments. Since they are included from both compressed and regular kernels, make note of that. Also corrects a typo in the mem_avoid comments. Signed-off-by: Kees Cook Cc: Andrew Morton Cc: Andy Lutomirski Cc: Andy Lutomirski Cc: Baoquan He Cc: Borislav Petkov Cc: Borislav Petkov Cc: Brian Gerst Cc: Dave Young Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vivek Goyal Cc: Yinghai Lu Cc: kernel-hardening@lists.openwall.com Cc: lasse.collin@tukaani.org Link: http://lkml.kernel.org/r/1462825332-10505-3-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar --- arch/x86/boot/compressed/kaslr.c | 2 +- arch/x86/boot/early_serial_console.c | 4 ++++ arch/x86/mm/ident_map.c | 5 +++++ 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c index f5a138c3fe96..f15d7b8d1b16 100644 --- a/arch/x86/boot/compressed/kaslr.c +++ b/arch/x86/boot/compressed/kaslr.c @@ -163,7 +163,7 @@ static bool mem_overlaps(struct mem_vector *one, struct mem_vector *two) * memory ranges lead to really hard to debug boot failures. * * The initrd, cmdline, and boot_params are trivial to identify for - * avoiding. The are MEM_AVOID_INITRD, MEM_AVOID_CMDLINE, and + * avoiding. They are MEM_AVOID_INITRD, MEM_AVOID_CMDLINE, and * MEM_AVOID_BOOTPARAMS respectively below. * * What is not obvious how to avoid is the range of memory that is used diff --git a/arch/x86/boot/early_serial_console.c b/arch/x86/boot/early_serial_console.c index 45a07684bbab..f0b8d6d93164 100644 --- a/arch/x86/boot/early_serial_console.c +++ b/arch/x86/boot/early_serial_console.c @@ -1,3 +1,7 @@ +/* + * Serial port routines for use during early boot reporting. This code is + * included from both the compressed kernel and the regular kernel. + */ #include "boot.h" #define DEFAULT_SERIAL_PORT 0x3f8 /* ttyS0 */ diff --git a/arch/x86/mm/ident_map.c b/arch/x86/mm/ident_map.c index 751ca920773a..ec21796ac5fd 100644 --- a/arch/x86/mm/ident_map.c +++ b/arch/x86/mm/ident_map.c @@ -1,3 +1,7 @@ +/* + * Helper routines for building identity mapping page tables. This is + * included by both the compressed kernel and the regular kernel. + */ static void ident_pmd_init(unsigned long pmd_flag, pmd_t *pmd_page, unsigned long addr, unsigned long end) @@ -10,6 +14,7 @@ static void ident_pmd_init(unsigned long pmd_flag, pmd_t *pmd_page, set_pmd(pmd, __pmd(addr | pmd_flag)); } } + static int ident_pud_init(struct x86_mapping_info *info, pud_t *pud_page, unsigned long addr, unsigned long end) {