On Wed, May 22, 2019 at 06:40:57PM +0100, Ard Biesheuvel wrote: > In order to fix an issue in the place relative ksymtab code, we > need to switch to 64-bit place relative references, which > require special handling in the x86 'relocs' tool. The reason > is that per-CPU symbols on x86_64 live in a separate link time > section, whose load time address is not reflected in the ELF > metadata, and so relative references emitted by the toolchain > are guaranteed to be wrong. > > So fix this by extending the handling of 32-bit relative references > to per-CPU variables to support 64-bit relative references as > well. > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxx> > --- > This is a follow-up to [0] and a prerequisite to the change it > implements: using 64-bit relative references on x86_64 requires > this handling in the 'relocs' tool and in the decompressor. > > [0] https://lore.kernel.org/linux-arm-kernel/20190522150239.19314-1-ard.biesheuvel@xxxxxxx > > This patch plus [0] build and boot tested with x86_64_defconfig on QEMU/kvm + OVMF. NACK based on https://lkml.kernel.org/r/f2141ee5-d07a-6dd9-47c6-97e8fbdccf34@xxxxxxx -- Josh
