leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c3462ba986
linux/arch/x86/entry
History
Ingo Molnar e769742d35 Revert "x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs" 
This reverts commit 5bdcd510c2.

The macro based workarounds for GCC's inlining bugs caused regressions: distcc
and other distro build setups broke, and the fixes are not easy nor will they
solve regressions on already existing installations.

So we are reverting this patch and the 8 followup patches.

What makes this revert easier is that GCC9 will likely include the new 'asm inline'
syntax that makes inlining of assembly blocks a lot more robust.

This is a superior method to any macro based hackeries - and might even be
backported to GCC8, which would make all modern distros get the inlining
fixes as well.

Many thanks to Masahiro Yamada and others for helping sort out these problems.

Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Richard Biener <rguenther@suse.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Nadav Amit <namit@vmware.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-12-19 11:58:10 +01:00
..
syscalls x86: Wire up restartable sequence system call 2018-06-06 11:58:32 +02:00
vdso x86/vdso: Pass --eh-frame-hdr to the linker 2018-12-15 11:37:51 +01:00
vsyscall Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-10-24 11:22:39 +01:00
calling.h Revert "x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs" 2018-12-19 11:58:10 +01:00
common.c rseq: Avoid infinite recursion when delivering SIGSEGV 2018-06-22 19:04:22 +02:00
entry_32.S New gcc plugin: stackleak 2018-11-01 11:46:27 -07:00
entry_64_compat.S x86/entry: Add STACKLEAK erasing the kernel stack at the end of syscalls 2018-09-04 10:35:47 -07:00
entry_64.S New gcc plugin: stackleak 2018-11-01 11:46:27 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall_32.c syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64 2018-04-05 16:59:38 +02:00
syscall_64.c syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64 2018-04-05 16:59:38 +02:00
thunk_32.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
thunk_64.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00