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linux/arch/x86/boot
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Roy Franz f2b73ee267 x86/efi: Store upper bits of command line buffer address in ext_cmd_line_ptr 
commit 98b228f550 upstream.

Until now, the EFI stub was only setting the 32 bit cmd_line_ptr in
the setup_header structure, so on 64 bit platforms this could be truncated.
This patch adds setting the upper bits of the buffer address in
ext_cmd_line_ptr.  This case was likely never hit, as the allocation
for this buffer is done at the lowest available address.  Only
x86_64 kernels have this problem, as the 1-1 mapping mandated
by EFI ensures that all memory is 32 bit addressable on 32 bit
platforms.  The EFI stub does not support mixed mode, so the
32 bit kernel on 64 bit firmware case does not need to be handled.

Signed-off-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-05-20 13:25:56 +01:00
..
compressed x86/efi: Store upper bits of command line buffer address in ext_cmd_line_ptr 2015-05-20 13:25:56 +01:00
tools x86/efi: Include a .bss section within the PE/COFF headers 2014-07-10 14:21:39 +01:00
.gitignore x86: remove offsets.h from .gitignore and dontdiff 2012-11-19 14:10:53 +01:00
a20.c x86, setup: "glove box" BIOS interrupts in the core boot code 2009-04-09 16:08:11 -07:00
apm.c x86, setup: "glove box" BIOS interrupts in the APM code 2009-04-09 16:08:11 -07:00
bioscall.S x86, boot: Move intcall() to the .inittext section 2014-01-04 14:29:08 -08:00
bitops.h x86: remove pointless comments 2008-04-19 19:19:54 +02:00
boot.h x86, boot: Move memcmp() into string.h and string.c 2014-03-19 15:44:04 -07:00
cmdline.c x86, boot: Pass cmd_line_ptr with unsigned long instead 2013-01-29 15:26:09 -08:00
code16gcc.h i386: move boot 2007-10-11 11:16:45 +02:00
copy.S x86, boot: Use .code16 instead of .code16gcc 2014-01-04 13:59:06 -08:00
cpu.c x86 setup: handle more than 8 CPU flag words 2008-09-16 15:09:26 -07:00
cpucheck.c Merge branch 'x86/boot' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-04-02 12:23:49 -07:00
cpuflags.c x86, boot: Fix word-size assumptions in has_eflag() inline asm 2014-01-30 08:04:32 -08:00
cpuflags.h x86, boot: Rename get_flags() and check_flags() to *_cpuflags() 2013-10-13 04:08:56 -07:00
ctype.h x86, setup: move isdigit.h to ctype.h, header files on top. 2010-08-02 21:07:20 -07:00
early_serial_console.c x86, setup: Fix earlyprintk=serial,0x3f8,115200 2010-09-21 10:18:33 -07:00
edd.c x86, boot: Create a separate string.h file to provide standard string functions 2014-03-19 15:43:45 -07:00
header.S x86/efi: Include a .bss section within the PE/COFF headers 2014-07-10 14:21:39 +01:00
install.sh kbuild: use INSTALLKERNEL to select customized installkernel script 2009-09-20 12:18:14 +02:00
main.c x86, boot: Create a separate string.h file to provide standard string functions 2014-03-19 15:43:45 -07:00
Makefile x86, build: Don't get confused by local symbols 2014-05-05 15:23:35 -07:00
mca.c x86, setup: "glove box" BIOS interrupts in the MCA code 2009-04-09 16:08:11 -07:00
memory.c x86, setup: When probing memory with e801, use ax/bx as a pair 2011-04-25 14:52:37 -07:00
mkcpustr.c UAPI: Partition the header include path sets and add uapi/ header directories 2012-10-02 18:01:26 +01:00
mtools.conf.in i386: move boot 2007-10-11 11:16:45 +02:00
pm.c x86: remove zImage support 2009-03-11 11:00:00 -07:00
pmjump.S x86, setup: move 32-bit code to .text32 2009-03-17 15:26:06 -07:00
printf.c x86/boot: Fix a sanity check in printf.c 2013-08-14 11:48:41 +02:00
regs.c x86, boot: Create a separate string.h file to provide standard string functions 2014-03-19 15:43:45 -07:00
setup.ld x86, boot: Define the 2.12 bzImage boot protocol 2013-01-27 15:56:37 -08:00
string.c x86, boot: Remove misc.h inclusion from compressed/string.c 2014-05-08 08:00:06 -07:00
string.h x86, boot: Move memcmp() into string.h and string.c 2014-03-19 15:44:04 -07:00
tty.c x86, setup: reorganize the early console setup 2010-08-02 15:51:56 -07:00
version.c kbuild: move utsrelease.h to include/generated 2009-12-12 13:08:15 +01:00
vesa.h x86-boot: don't request VBE2 information 2008-03-07 16:39:14 +01:00
video-bios.c x86: fix usage of bios intcall() 2009-07-04 12:56:32 -07:00
video-mode.c x86: move suspend wakeup code to C 2008-04-17 17:41:37 +02:00
video-vesa.c x86, boot: Create a separate string.h file to provide standard string functions 2014-03-19 15:43:45 -07:00
video-vga.c x86, setup: Set ax register in boot vga query 2010-06-10 15:24:29 -07:00
video.c x86, setup: When restoring the screen, update boot_params.screen_info 2010-02-17 18:32:06 -08:00
video.h x86, boot: Use __attribute__((used)) to ensure videocard structs are emitted 2014-01-22 04:21:45 -08:00