Ard Biesheuvel ba0523881c efi/libstub/arm64: Set -fpie when building the EFI stub ... commit 91ee5b21ee upstream. Clang may emit absolute symbol references when building in non-PIC mode, even when using the default 'small' code model, which is already mostly position independent to begin with, due to its use of adrp/add pairs that have a relative range of +/- 4 GB. The remedy is to pass the -fpie flag, which can be done safely now that the code has been updated to avoid GOT indirections (which may be emitted due to the compiler assuming that the PIC/PIE code may end up in a shared library that is subject to ELF symbol preemption) Passing -fpie when building code that needs to execute at an a priori unknown offset is arguably an improvement in any case, and given that the recent visibility changes allow the PIC build to pass with GCC as well, let's add -fpie for all arm64 builds rather than only for Clang. Tested-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20170818194947.19347-5-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-11-27 16:07:58 +01:00
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libstub	efi/libstub/arm64: Set -fpie when building the EFI stub	2018-11-27 16:07:58 +01:00
cper.c	efi: Handle memory error structures produced based on old versions of standard	2015-07-15 13:30:38 +01:00
efi-pstore.c	Half dozen small cleanups plus change to allow pstore	2015-11-05 11:51:18 -08:00
efi.c	efi/esrt: Cleanup bad memory map log messages	2017-12-20 10:04:56 +01:00
efivars.c	efi: Make our variable validation list include the guid	2016-03-03 15:07:09 -08:00
esrt.c	efi/esrt: Cleanup bad memory map log messages	2017-12-20 10:04:56 +01:00
fake_mem.c	efi: Fix warning of int-to-pointer-cast on x86 32-bit builds	2015-10-28 12:28:06 +01:00
Kconfig	* Make the EFI System Resource Table (ESRT) driver explicitly	2015-10-14 16:51:34 +02:00
Makefile	arm64 updates for 4.4:	2015-11-04 14:47:13 -08:00
reboot.c	x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag	2014-07-18 21:23:52 +01:00
runtime-map.c	efi: Move some sysfs files to be read-only by root	2017-12-16 10:33:48 +01:00
runtime-wrappers.c	efi: Delete the in_nmi() conditional runtime locking	2014-10-03 18:41:03 +01:00
vars.c	efi: Fix out-of-bounds read in variable_matches()	2016-05-04 14:48:48 -07:00