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6a181e3339
Linking with ld.lld via $ make LD=ld.lld produces the warning: ld.lld: warning: cannot find entry symbol _start; defaulting to 0x1000 Linking with ld.bfd shows the default entry is 0x1000: $ readelf -h arch/x86/realmode/rm/realmode.elf | grep Entry Entry point address: 0x1000 While ld.lld is being pedantic, just set the entry point explicitly, instead of depending on the implicit default. The symbol pa_text_start refers to the start of the .text section, which may not be at 0x1000 if the preceding sections listed in arch/x86/realmode/rm/realmode.lds.S were large enough. This matches behavior in arch/x86/boot/setup.ld. Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Suggested-by: Borislav Petkov <bp@alien8.de> Suggested-by: Peter Smith <Peter.Smith@arm.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: clang-built-linux@googlegroups.com Cc: grimar@accesssoftek.com Cc: Ingo Molnar <mingo@redhat.com> Cc: maskray@google.com Cc: ruiu@google.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190925180908.54260-1-ndesaulniers@google.com Link: https://github.com/ClangBuiltLinux/linux/issues/216 |
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