| Message ID | 20191105235608.107702-14-samitolvanen@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v5,01/14] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings | expand |
On Tue, Nov 05, 2019 at 03:56:07PM -0800, Sami Tolvanen wrote: > Filter out CC_FLAGS_SCS for code that runs at a different exception > level. > > Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org> > Signed-off-by: Sami Tolvanen <samitolvanen@google.com> > Reviewed-by: Kees Cook <keescook@chromium.org> Looks sound, and objdump confirms that the hyp objects are using x29's frame record, without using x18. Reviewed-by: Mark Rutland <mark.rutland@arm.com> Mark. > --- > arch/arm64/kvm/hyp/Makefile | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile > index ea710f674cb6..17ea3da325e9 100644 > --- a/arch/arm64/kvm/hyp/Makefile > +++ b/arch/arm64/kvm/hyp/Makefile > @@ -28,3 +28,6 @@ GCOV_PROFILE := n > KASAN_SANITIZE := n > UBSAN_SANITIZE := n > KCOV_INSTRUMENT := n > + > +# remove the SCS flags from all objects in this directory > +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) > -- > 2.24.0.rc1.363.gb1bccd3e3d-goog >
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index ea710f674cb6..17ea3da325e9 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -28,3 +28,6 @@ GCOV_PROFILE := n KASAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n + +# remove the SCS flags from all objects in this directory +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS))