[PATCH v2 08/18] arm64: don't disable ADR_PREL_PG_HI21* with ARM64_ERRATUM_843419
From: samitolvanen@google.com (Sami Tolvanen)
Date: 2017-11-16 21:37:15
Also in:
linux-kbuild, lkml
On Thu, Nov 16, 2017 at 04:34:03PM +0000, Ard Biesheuvel wrote:
You still have not explained to us how GOLD avoids the erratum.
Sorry, I didn't realize you were asking that. If gold spots erratum sequences, looks like it creates stubs to break them up: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gold/aarch64.cc#l8396 It also attempts to optimize the code by replacing adrps in these sequences with adr where possible, but otherwise doesn't appear to touch them: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gold/aarch64.cc#l2053 Sami