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Date: Tue, 7 Jul 2015 13:19:46 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Kees Cook <keescook@...omium.org>,
"H. Peter Anvin" <hpa@...or.com>, Baoquan He <bhe@...hat.com>
Cc: linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 00/42] x86: updated patches for kaslr and setup_data etc for v4.3
Those patches are rebased on v4.2-rc1 that I sent before but were rejected
by Ingo on changelog.
Kees Cook said that he would like to give a try to make improvement on changelog
to get things moving.
First part are kaslr related:
1. First put compressed kernel ZO near end of the buffer before decompressing
so we can find the ZO position easily for kaslr buffer searchin
2. kill run_size calculation shell scripts.
3. create new ident mapping for kasl 64bit, so we can cover
above 4G random kernel base
4. 7 patches from He that support random random, as I already used his patches
to test the ident mapping code.
5. some debug patches for boot/kaslr.
Second part are setup_data related:
Now setup_data is reserved via memblock and e820 and different
handlers have different ways, and it is confusing.
1. SETUP_E820_EXT: is consumed early and will not copy or access again.
have memory wasted.
2. SETUP_EFI: is accessed via ioremap every time at early stage.
have memory wasted.
3. SETUP_DTB: is copied locally.
have memory wasted.
4. SETUP_PCI: is accessed via ioremap for every pci devices, even run-time.
Also setup_data is exported to debugfs for debug purpose.
Here will convert to let every handler to decide how to handle it.
and will not reserve the setup_data generally, so will not
waste memory and also make memblock/e820 keep page aligned.
1. not touch E820 anymore.
2. copy SETUP_EFI to __initdata variable and access it without ioremap.
3. SETUP_DTB: reserver and copy to local and free.
4. SETUP_PCI: reverve localy and convert to list, to avoid keeping ioremap.
5. export SETUP_PCI via sysfs.
Third part are some small cleanup patches.
put those patches at
git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-v4.3-next
Thanks
Yinghai
Baoquan He (7):
x86, kaslr: Fix a bug that relocation can not be handled when kernel is loaded above 2G
x86, kaslr: Introduce struct slot_area to manage randomization slot info
x86, kaslr: Add two functions which will be used later
x86, kaslr: Introduce fetch_random_virt_offset to randomize the kernel text mapping address
x86, kaslr: Randomize physical and virtual address of kernel separately
x86, kaslr: Add support of kernel physical address randomization above 4G
x86, kaslr: Remove useless codes
Yinghai Lu (35):
x86, kasl: Remove not needed parameter for choose_kernel_location
x86, boot: Move compressed kernel to end of buffer before decompressing
x86, boot: Fix run_size calculation
x86, kaslr: Kill not needed and wrong run_size calculation code.
x86, kaslr: rename output_size to output_run_size
x86, kaslr: Consolidate mem_avoid array filling
x86, boot: Move z_extract_offset calculation to header.S
x86, kaslr: Get correct max_addr for relocs pointer
x86, boot: Split kernel_ident_mapping_init to another file
x86, 64bit: Set ident_mapping for kaslr
x86, boot: Add checking for memcpy
x86, kaslr: Allow random address could be below loaded address
x86, boot: Add printf support for early console in compressed/misc.c
x86, boot: Add more debug printout in compressed/misc.c
x86, setup: Check early serial console per string instead of one char
x86, setup: Use puts() instead of printf() in edd code
x86: Setup early console as early as possible in x86_start_kernel()
x86, boot: print compression suffix in decompress stage
x86: remove not needed clear_page calling
x86: restore end_of_ram to E820_RAM
x86, boot: Allow 64bit EFI kernel to be loaded above 4G
x86: Find correct 64 bit ramdisk address for microcode early update
x86: Kill E820_RESERVED_KERN
x86, efi: Copy SETUP_EFI data and access directly
x86, of: Let add_dtb reserve setup_data locally
x86, boot: Add add_pci handler for SETUP_PCI
x86: Kill not used setup_data handling code
x86, boot, PCI: Convert SETUP_PCI data to list
x86, boot, PCI: Copy SETUP_PCI rom to kernel space
x86, boot, PCI: Export SETUP_PCI data via sysfs
x86: Fix typo in mark_rodata_ro
x86, 64bit: add pfn_range_is_highmapped()
x86, 64bit: remove highmap for not needed ranges
x86, 64bit: Add __pa_high/__va_high
x86: fix msr print again
Documentation/x86/boot.txt | 19 ++
arch/x86/boot/Makefile | 13 +-
arch/x86/boot/compressed/Makefile | 21 +-
arch/x86/boot/compressed/aslr.c | 258 ++++++++++++++++-------
arch/x86/boot/compressed/eboot.c | 15 +-
arch/x86/boot/compressed/head_32.S | 14 +-
arch/x86/boot/compressed/head_64.S | 22 +-
arch/x86/boot/compressed/misc.c | 129 +++++++++---
arch/x86/boot/compressed/misc.h | 41 +++-
arch/x86/boot/compressed/misc_pgt.c | 91 ++++++++
arch/x86/boot/compressed/mkpiggy.c | 28 +--
arch/x86/boot/compressed/printf.c | 5 +
arch/x86/boot/compressed/string.c | 28 ++-
arch/x86/boot/compressed/vmlinux.lds.S | 1 +
arch/x86/boot/edd.c | 4 +-
arch/x86/boot/header.S | 34 ++-
arch/x86/boot/tty.c | 14 +-
arch/x86/include/asm/boot.h | 19 ++
arch/x86/include/asm/efi.h | 2 +-
arch/x86/include/asm/page.h | 5 +
arch/x86/include/asm/pci.h | 4 +
arch/x86/include/asm/pgtable_64.h | 2 +
arch/x86/include/asm/processor.h | 1 -
arch/x86/include/asm/prom.h | 9 +-
arch/x86/include/asm/setup.h | 5 +
arch/x86/include/uapi/asm/bootparam.h | 1 +
arch/x86/include/uapi/asm/e820.h | 8 -
arch/x86/kernel/asm-offsets.c | 2 +
arch/x86/kernel/cpu/common.c | 61 +++---
arch/x86/kernel/cpu/microcode/amd_early.c | 10 +-
arch/x86/kernel/cpu/microcode/intel_early.c | 8 +-
arch/x86/kernel/devicetree.c | 39 ++--
arch/x86/kernel/e820.c | 18 +-
arch/x86/kernel/head.c | 26 +++
arch/x86/kernel/head32.c | 1 +
arch/x86/kernel/head64.c | 21 +-
arch/x86/kernel/kdebugfs.c | 142 -------------
arch/x86/kernel/setup.c | 79 ++-----
arch/x86/kernel/tboot.c | 3 +-
arch/x86/kernel/vmlinux.lds.S | 1 +
arch/x86/mm/ident_map.c | 74 +++++++
arch/x86/mm/init_64.c | 173 +++++++--------
arch/x86/mm/pageattr.c | 16 +-
arch/x86/pci/common.c | 313 ++++++++++++++++++++++++++--
arch/x86/platform/efi/efi.c | 13 +-
arch/x86/platform/efi/efi_64.c | 10 +-
arch/x86/platform/efi/quirks.c | 23 +-
arch/x86/tools/calc_run_size.sh | 42 ----
drivers/tty/serial/8250/8250_early.c | 17 ++
kernel/printk/printk.c | 11 +-
50 files changed, 1235 insertions(+), 661 deletions(-)
create mode 100644 arch/x86/boot/compressed/misc_pgt.c
create mode 100644 arch/x86/boot/compressed/printf.c
create mode 100644 arch/x86/mm/ident_map.c
delete mode 100644 arch/x86/tools/calc_run_size.sh
--
1.8.4.5
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