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| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-06-01 11:47:40 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-06-05 11:38:53 +0200 |
| commit | 7616fc8bcd7ef4975a294337d6cd3007b8c18746 (patch) | |
| tree | e68b756ae0e477bbdc8ea64daedaa5f11ca7cee4 /arch/arm64/kernel/entry-fpsimd.S | |
| parent | arm64: Rework alternate sequence for ARM erratum 845719 (diff) | |
| download | linux-7616fc8bcd7ef4975a294337d6cd3007b8c18746.tar.xz linux-7616fc8bcd7ef4975a294337d6cd3007b8c18746.zip | |
arm64: alternative: Allow immediate branch as alternative instruction
Since all branches are PC-relative on AArch64, these instructions
cannot be used as an alternative with the simplistic approach
we currently have (the immediate has been computed from
the .altinstr_replacement section, and end-up being completely off
if the target is outside of the replacement sequence).
This patch handles the branch instructions in a different way,
using the insn framework to recompute the immediate, and generate
the right displacement in the above case.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/entry-fpsimd.S')
0 files changed, 0 insertions, 0 deletions