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Date: Fri, 7 Dec 2018 10:33:56 -0800 From: tip-bot for Nick Desaulniers <tipbot@...or.com> To: linux-tip-commits@...r.kernel.org Cc: morbo@...gle.com, hpa@...or.com, dima@...ovin.in, luto@...nel.org, maskray@...gle.com, mingo@...hat.com, andi@...stfloor.org, ndesaulniers@...gle.com, ruiu@...gle.com, mingo@...nel.org, x86@...nel.org, tglx@...utronix.de, bp@...e.de, linux-kernel@...r.kernel.org Subject: [tip:x86/urgent] x86/vdso: Drop implicit common-page-size linker flag Commit-ID: ac3e233d29f7f77f28243af0132057d378d3ea58 Gitweb: https://git.kernel.org/tip/ac3e233d29f7f77f28243af0132057d378d3ea58 Author: Nick Desaulniers <ndesaulniers@...gle.com> AuthorDate: Thu, 6 Dec 2018 11:12:31 -0800 Committer: Borislav Petkov <bp@...e.de> CommitDate: Fri, 7 Dec 2018 18:57:38 +0100 x86/vdso: Drop implicit common-page-size linker flag GNU linker's -z common-page-size's default value is based on the target architecture. arch/x86/entry/vdso/Makefile sets it to the architecture default, which is implicit and redundant. Drop it. Fixes: 2aae950b21e4 ("x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu") Reported-by: Dmitry Golovin <dima@...ovin.in> Reported-by: Bill Wendling <morbo@...gle.com> Suggested-by: Dmitry Golovin <dima@...ovin.in> Suggested-by: Rui Ueyama <ruiu@...gle.com> Signed-off-by: Nick Desaulniers <ndesaulniers@...gle.com> Signed-off-by: Borislav Petkov <bp@...e.de> Acked-by: Andy Lutomirski <luto@...nel.org> Cc: Andi Kleen <andi@...stfloor.org> Cc: Fangrui Song <maskray@...gle.com> Cc: "H. Peter Anvin" <hpa@...or.com> Cc: Ingo Molnar <mingo@...hat.com> Cc: Thomas Gleixner <tglx@...utronix.de> Cc: x86-ml <x86@...nel.org> Link: https://lkml.kernel.org/r/20181206191231.192355-1-ndesaulniers@google.com Link: https://bugs.llvm.org/show_bug.cgi?id=38774 Link: https://github.com/ClangBuiltLinux/linux/issues/31 --- arch/x86/entry/vdso/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 141d415a8c80..0624bf2266fd 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -47,7 +47,7 @@ targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so) CPPFLAGS_vdso.lds += -P -C VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -soname linux-vdso.so.1 --no-undefined \ - -z max-page-size=4096 -z common-page-size=4096 + -z max-page-size=4096 $(obj)/vdso64.so.dbg: $(obj)/vdso.lds $(vobjs) FORCE $(call if_changed,vdso) @@ -98,7 +98,7 @@ CFLAGS_REMOVE_vvar.o = -pg CPPFLAGS_vdsox32.lds = $(CPPFLAGS_vdso.lds) VDSO_LDFLAGS_vdsox32.lds = -m elf32_x86_64 -soname linux-vdso.so.1 \ - -z max-page-size=4096 -z common-page-size=4096 + -z max-page-size=4096 # x32-rebranded versions vobjx32s-y := $(vobjs-y:.o=-x32.o)
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