AuxXxilium/linux_dsm_epyc7002
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b059f801a9
linux_dsm_epyc7002/arch/x86
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Nick Desaulniers b059f801a9 x86/purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS 
KBUILD_CFLAGS is very carefully built up in the top level Makefile,
particularly when cross compiling or using different build tools.
Resetting KBUILD_CFLAGS via := assignment is an antipattern.

The comment above the reset mentions that -pg is problematic.  Other
Makefiles use `CFLAGS_REMOVE_file.o = $(CC_FLAGS_FTRACE)` when
CONFIG_FUNCTION_TRACER is set. Prefer that pattern to wiping out all of
the important KBUILD_CFLAGS then manually having to re-add them. Seems
also that __stack_chk_fail references are generated when using
CONFIG_STACKPROTECTOR or CONFIG_STACKPROTECTOR_STRONG.

Fixes: 8fc5b4d412 ("purgatory: core purgatory functionality")
Reported-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190807221539.94583-2-ndesaulniers@google.com
2019-08-08 08:25:53 +02:00
..
boot x86/purgatory: Do not use __builtin_memcpy and __builtin_memset 2019-08-08 08:25:52 +02:00
configs
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
entry Merge branch master from git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2019-07-28 22:22:40 +02:00
events perf/x86/intel: Mark expected switch fall-throughs 2019-07-25 20:10:05 -05:00
hyperv x86/hyper-v: Zero out the VP ASSIST PAGE on allocation 2019-07-19 09:48:15 +02:00
ia32 clone: fix CLONE_PIDFD support 2019-07-14 20:36:12 +02:00
include Merge branch 'x86/grand-schemozzle' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-08-06 11:22:22 -07:00
kernel x86: mtrr: cyrix: Mark expected switch fall-through 2019-08-07 15:12:01 +02:00
kvm Bugfixes, and a pvspinlock optimization 2019-07-24 09:46:13 -07:00
lib x86/uaccess: Remove redundant CLACs in getuser/putuser error paths 2019-07-18 21:01:06 +02:00
math-emu x86: math-emu: Hide clang warnings for 16-bit overflow 2019-07-17 00:42:26 +02:00
mm x86/mm: Sync also unmappings in vmalloc_sync_all() 2019-07-22 10:18:30 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-07-08 19:48:57 -07:00
oprofile
pci
platform platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
power
purgatory x86/purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS 2019-08-08 08:25:53 +02:00
ras
realmode
tools Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-08 17:34:44 -07:00
um Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
video
xen Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-20 11:24:49 -07:00
.gitignore
Kbuild
Kconfig dma-mapping fixes for 5.3-rc1 2019-07-20 12:09:52 -07:00
Kconfig.cpu
Kconfig.debug It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
Makefile
Makefile_32.cpu
Makefile.um