Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1631047 > unrolled thread
| Started by | Matthias Kaehlcke <mka@chromium.org> |
|---|---|
| First post | 2017-04-26 00:50 +0200 |
| Last post | 2017-04-28 02:40 +0200 |
| Articles | 2 — 2 participants |
Back to article view | Back to linux.kernel
[PATCH v2] kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS Matthias Kaehlcke <mka@chromium.org> - 2017-04-26 00:50 +0200
Re: [PATCH v2] kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-04-28 02:40 +0200
| From | Matthias Kaehlcke <mka@chromium.org> |
|---|---|
| Date | 2017-04-26 00:50 +0200 |
| Subject | [PATCH v2] kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS |
| Message-ID | <tAhrr-2g4-7@gated-at.bofh.it> |
From: Michael Davidson <md@google.com> The Linux Kernel relies on GCC's acceptance of inline assembly as an opaque object which will not have any validation performed on the content. The current behaviour in LLVM is to perform validation of the contents by means of parsing the input if the MC layer can handle it. Disable clangs integrated assembler and use the GNU assembler instead. Wording-mostly-from: Saleem Abdulrasool <compnerd@compnerd.org> Signed-off-by: Michael Davidson <md@google.com> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> --- Changes in v2: - Added paragraph explaining why this change is needed - Updated subject (was: Makefile, LLVM: add -no-integrated-as to KBUILD_[AC]FLAGS) (agreed with Michael to update the patch) Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Makefile b/Makefile index 5039b9148d15..3832c8243334 100644 --- a/Makefile +++ b/Makefile @@ -710,6 +710,8 @@ KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) # See modpost pattern 2 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) +KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) +KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) else # These warnings generated too much noise in a regular build. -- 2.13.0.rc0.306.g87b477812d-goog
[toc] | [next] | [standalone]
| From | Masahiro Yamada <yamada.masahiro@socionext.com> |
|---|---|
| Date | 2017-04-28 02:40 +0200 |
| Message-ID | <tB26Z-8k7-3@gated-at.bofh.it> |
| In reply to | #1631047 |
2017-04-26 7:47 GMT+09:00 Matthias Kaehlcke <mka@chromium.org>: > From: Michael Davidson <md@google.com> > > The Linux Kernel relies on GCC's acceptance of inline assembly as an > opaque object which will not have any validation performed on the content. > The current behaviour in LLVM is to perform validation of the contents by > means of parsing the input if the MC layer can handle it. > > Disable clangs integrated assembler and use the GNU assembler instead. > > Wording-mostly-from: Saleem Abdulrasool <compnerd@compnerd.org> > Signed-off-by: Michael Davidson <md@google.com> > Signed-off-by: Matthias Kaehlcke <mka@chromium.org> > --- Applied to linux-kbuild/kbuild. Thanks! -- Best Regards Masahiro Yamada
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web