path: root/arch/x86/kernel/asm-offsets_32.c
diff options
authorH. Peter Anvin <hpa@zytor.com>2009-05-11 15:56:08 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-05-11 17:44:39 -0700
commit37ba7ab5e33cebc25c68fffe33e9f21e7c2014e8 (patch)
tree006ba60fcd29b8fdee844ee6d90b85104a254d0d /arch/x86/kernel/asm-offsets_32.c
parent99aa45595f45603526513d5e29fc00f8afbf3913 (diff)
x86, boot: make kernel_alignment adjustable; new bzImage fields
Make the kernel_alignment field adjustable; this allows us to set it to a large value (intended to be 16 MB to avoid ZONE_DMA contention, memory holes and other weirdness) while a smart bootloader can still force a loading at a lesser alignment if absolutely necessary. Also export pref_address (preferred loading address, corresponding to the link-time address) and init_size, the total amount of linear memory the kernel will require during initialization. [ Impact: allows better kernel placement, gives bootloader more info ] Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/asm-offsets_32.c')
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index 5a6aa1c1162f..1a830cbd7015 100644
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -146,4 +146,5 @@ void foo(void)
OFFSET(BP_loadflags, boot_params, hdr.loadflags);
OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
OFFSET(BP_version, boot_params, hdr.version);
+ OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);