diff options
| author | Maarten Lankhorst <m.b.lankhorst@gmail.com> | 2011-12-16 13:30:58 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-12-16 08:34:35 -0800 |
| commit | 2d2da60fb40a80cc59383121ccf763e0e0e8a42a (patch) | |
| tree | e0a17e115c545bdf7e065cf0ef53326da70ca407 /arch/x86/boot/compressed/eboot.h | |
| parent | 291f36325f9f252bd76ef5f603995f37e453fc60 (diff) | |
x86, efi: Break up large initrd reads
The efi boot stub tries to read the entire initrd in 1 go, however
some efi implementations hang if too much if asked to read too much
data at the same time. After some experimentation I found out that my
asrock p67 board will hang if asked to read chunks of 4MiB, so use a
safe value.
elilo reads in chunks of 16KiB, but since that requires many read
calls I use a value of 1 MiB. hpa suggested adding individual
blacklists for when systems are found where this value causes a crash.
Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Link: http://lkml.kernel.org/r/4EEB3A02.3090201@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/boot/compressed/eboot.h')
| -rw-r--r-- | arch/x86/boot/compressed/eboot.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/eboot.h b/arch/x86/boot/compressed/eboot.h index f66d023e91ef..39251663e65b 100644 --- a/arch/x86/boot/compressed/eboot.h +++ b/arch/x86/boot/compressed/eboot.h @@ -12,6 +12,7 @@ #define DESC_TYPE_CODE_DATA (1 << 0) #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) +#define EFI_READ_CHUNK_SIZE (1024 * 1024) #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 |