Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-27 13:22:23 +00:00
Code Issues Packages Projects Releases Wiki Activity
071a74930e
linux/arch/x86/boot/compressed
History
Baoquan He 071a74930e x86/KASLR: Add virtual address choosing function 
To support randomizing the kernel virtual address separately from the
physical address, this patch adds find_random_virt_addr() to choose
a slot anywhere between LOAD_PHYSICAL_ADDR and KERNEL_IMAGE_SIZE.
Since this address is virtual, not physical, we can place the kernel
anywhere in this region, as long as it is aligned and (in the case of
kernel being larger than the slot size) placed with enough room to load
the entire kernel image.

For clarity and readability, find_random_addr() is renamed to
find_random_phys_addr() and has "size" renamed to "image_size" to match
find_random_virt_addr().

Signed-off-by: Baoquan He <bhe@redhat.com>
[ Rewrote changelog, refactored slot calculation for readability. ]
[ Renamed find_random_phys_addr() and size argument. ]
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: kernel-hardening@lists.openwall.com
Cc: lasse.collin@tukaani.org
Link: http://lkml.kernel.org/r/1462825332-10505-6-git-send-email-keescook@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-10 10:12:06 +02:00
..
.gitignore x86, boot: add new generated files to the appropriate .gitignore files 2009-06-02 21:13:30 -07:00
cmdline.c x86/boot: Rename "real_mode" to "boot_params" 2016-04-19 10:30:50 +02:00
cpuflags.c x86, boot: Rename get_flags() and check_flags() to *_cpuflags() 2013-10-13 04:08:56 -07:00
early_serial_console.c x86, boot: Don't compile early_serial_console.c when !CONFIG_EARLY_PRINTK 2014-08-17 14:58:24 -07:00
eboot.c * Make the EFI System Resource Table (ESRT) driver explicitly 2015-10-14 16:51:34 +02:00
eboot.h efi/x86: Move x86 back to libstub 2014-11-11 22:23:11 +00:00
efi_stub_32.S x86, efi: EFI boot stub support 2011-12-12 14:26:10 -08:00
efi_stub_64.S x86/efi: Avoid triple faults during EFI mixed mode calls 2015-02-13 15:42:56 +00:00
efi_thunk_64.S x86/efi: Avoid triple faults during EFI mixed mode calls 2015-02-13 15:42:56 +00:00
error.c x86/boot: Extract error reporting functions 2016-05-03 08:15:58 +02:00
error.h x86/boot: Extract error reporting functions 2016-05-03 08:15:58 +02:00
head_32.S x86/KASLR: Clean up unused code from old 'run_size' and rename it to 'kernel_total_size' 2016-04-29 11:03:30 +02:00
head_64.S x86/KASLR: Build identity mappings on demand 2016-05-07 07:38:39 +02:00
kaslr.c x86/KASLR: Add virtual address choosing function 2016-05-10 10:12:06 +02:00
Makefile x86/KASLR: Build identity mappings on demand 2016-05-07 07:38:39 +02:00
misc.c x86/boot: Simplify pointer casting in choose_random_location() 2016-05-07 07:38:38 +02:00
misc.h x86/KASLR: Build identity mappings on demand 2016-05-07 07:38:39 +02:00
mkpiggy.c x86/KASLR: Clean up unused code from old 'run_size' and rename it to 'kernel_total_size' 2016-04-29 11:03:30 +02:00
pagetable.c x86/KASLR: Initialize mapping_info every time 2016-05-10 10:12:02 +02:00
string.c x86/boot: Warn on future overlapping memcpy() use 2016-05-03 08:15:58 +02:00
vmlinux.lds.S x86/boot: Move compressed kernel to the end of the decompression buffer 2016-04-29 11:03:29 +02:00