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Sami Tolvanen 3f9e5a6923 FROMLIST: arm64: kvm: use -fno-jump-tables with clang 
Starting with LLVM r308050, clang generates a jump table with EL1
virtual addresses in __init_stage2_translation, which results in a
kernel panic when booting at EL2:

  Kernel panic - not syncing: HYP panic:
  PS:800003c9 PC:ffff0000089e6fd8 ESR:86000004
  FAR:ffff0000089e6fd8 HPFAR:0000000009825000 PAR:0000000000000000
  VCPU:000804fc20001221

  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.0-rc7-dirty #3
  Hardware name: ARM Juno development board (r1) (DT)
  Call trace:
  [<ffff000008088ea4>] dump_backtrace+0x0/0x34c
  [<ffff000008089208>] show_stack+0x18/0x20
  [<ffff0000089c73ec>] dump_stack+0xc4/0xfc
  [<ffff0000080c8e1c>] panic+0x138/0x2b4
  [<ffff0000080c8ce4>] panic+0x0/0x2b4
  SMP: stopping secondary CPUs
  SMP: failed to stop secondary CPUs 0-3,5
  Kernel Offset: disabled
  CPU features: 0x002086
  Memory Limit: none
  ---[ end Kernel panic - not syncing: HYP panic:
  PS:800003c9 PC:ffff0000089e6fd8 ESR:86000004
  FAR:ffff0000089e6fd8 HPFAR:0000000009825000 PAR:0000000000000000
  VCPU:000804fc20001221

This change adds -fno-jump-tables to arm64/hyp to work around the
bug.

Bug: 62093296
Bug: 67506682
Change-Id: I1257be1febdcbfcc886fe6183c698b7a98d2a153
(am from https://patchwork.kernel.org/patch/10060301/)
Suggested-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2018-08-28 17:10:42 +05:30
arch FROMLIST: arm64: kvm: use -fno-jump-tables with clang 2018-08-28 17:10:42 +05:30
block blk-wbt: don't maintain inflight counts if disabled 2018-08-23 09:34:46 -06:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto DMAengine updates for v4.19-rc1 2018-08-18 15:55:59 -07:00
Documentation ANDROID: memory_state_time: Implement memory_state_time, used by qcom,cpubw 2018-08-28 17:10:42 +05:30
drivers ANDROID: cpufreq: Add time_in_state to /proc/uid directories 2018-08-28 17:10:42 +05:30
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs ANDROID: cpufreq: Add time_in_state to /proc/uid directories 2018-08-28 17:10:42 +05:30
include ANDROID: cpufreq: Add time_in_state to /proc/uid directories 2018-08-28 17:10:42 +05:30
init ANDROID: initramfs: call free_initrd() when skipping init 2018-08-28 17:10:42 +05:30
ipc RFC: ANDROID: vfs: Add permission2 for filesystems with per mount permissions 2018-08-28 17:10:42 +05:30
kernel ANDROID: proc: Add /proc/uid directory 2018-08-28 17:10:42 +05:30
lib Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
LICENSES LICENSES: Add Linux-OpenIB license text 2018-04-27 16:41:53 -06:00
mm ANDROID: mm: Export do_munmap 2018-08-28 17:10:42 +05:30
net ANDROID: NFC: Fix possible memory corruption when handling SHDLC I-Frame commands 2018-08-28 17:10:42 +05:30
samples samples/bpf: all XDP samples should unload xdp/bpf prog on SIGTERM 2018-08-16 21:55:32 +02:00
scripts ANDROID: kbuild: Makefile.clean: make Kbuild and Makefile optional 2018-08-28 17:10:42 +05:30
security ANDROID: export security_path_chown 2018-08-28 17:10:42 +05:30
sound Merge branch 'akpm' (patches from Andrew) 2018-08-23 19:20:12 -07:00
tools Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt ARM: Support for Group0 interrupts in guests, Cache management 2018-08-22 13:52:44 -07:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore ANDROID: add script to fetch android kernel config fragments 2018-08-28 16:44:09 +05:30
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
build.config.cuttlefish.x86_64 ANDROID: Add build server config for cuttlefish. 2018-08-28 17:10:42 +05:30
build.config.goldfish.arm ANDROID: build: add build server configs for goldfish 2018-08-28 17:10:42 +05:30
build.config.goldfish.arm64 ANDROID: build: add build server configs for goldfish 2018-08-28 17:10:42 +05:30
build.config.goldfish.mips ANDROID: build: add build server configs for goldfish 2018-08-28 17:10:42 +05:30
build.config.goldfish.mips64 ANDROID: build: add build server configs for goldfish 2018-08-28 17:10:42 +05:30
build.config.goldfish.x86 ANDROID: build: add build server configs for goldfish 2018-08-28 17:10:42 +05:30
build.config.goldfish.x86_64 ANDROID: build: add build server configs for goldfish 2018-08-28 17:10:42 +05:30
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
Makefile ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple 2018-08-28 17:10:42 +05:30
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.