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arm64: errata: Add -mpc-relative-literal-loads to build flags #339

Closed kraj closed 6 years ago

kraj commented 6 years ago

GCC6 (and Linaro's 2015.12 snapshot of GCC5) has a new default that uses adrp/ldr or adrp/add to address literal pools. When CONFIG_ARM64_ERRATUM_843419 is enabled, modules built with this toolchain fail to load:

module libahci: unsupported RELA relocation: 275

This patch fixes the problem by passing '-mpc-relative-literal-loads' to the compiler.

Cc: stable@vger.kernel.org Fixes: df057cc7b4fa ("arm64: errata: add module build workaround for erratum #843419") BugLink: http://bugs.launchpad.net/bugs/1533009 Acked-by: Ard Biesheuvel ard.biesheuvel@linaro.org Suggested-by: Christophe Lyon christophe.lyon@linaro.org Signed-off-by: Dann Frazier dann.frazier@canonical.com Signed-off-by: Will Deacon will.deacon@arm.com

mdrjr commented 6 years ago

Thank you so much for those patchs you are sending lately. ;)