[PATCH 1/3] efi/libstub: arm64: use hidden attribute for struct screen_info reference
From: Ard Biesheuvel <hidden>
Date: 2017-05-18 09:09:51
Also in:
linux-efi
Subsystem:
arm64 port (aarch64 architecture), extensible firmware interface (efi), the rest · Maintainers:
Catalin Marinas, Will Deacon, Ard Biesheuvel, Linus Torvalds
To prevent the compiler from emitting absolute references to screen_info when building position independent code, redeclare the symbol with hidden visibility. Signed-off-by: Ard Biesheuvel <redacted> --- arch/arm64/include/asm/efi.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index 8f3043aba873..464ac850c5e2 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h@@ -81,6 +81,9 @@ static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base, #define alloc_screen_info(x...) &screen_info #define free_screen_info(x...) +/* redeclare as 'hidden' so the compiler will generate relative references */ +extern struct screen_info screen_info __attribute__((__visibility__("hidden"))); + static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt) { }
--
2.9.3