[PATCH 00/42] x86: updated patches for kaslr and setup_data etc for v4.3

[Yinghai Lu <yinghai@kernel.org>]

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

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1.8.4.5