On 2020-07-28 14:51, Marc Zyngier wrote:

Instead of dealing with erratum 1418040 on each entry and exit,
let's move the handling to __switch_to() instead, which has
several advantages:

- It can be applied when it matters (switching between 32 and 64
  bit tasks).
- It is written in C (yay!)
- It can rely on static keys rather than alternatives

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kernel/entry.S   | 21 ---------------------
 arch/arm64/kernel/process.c | 29 +++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 21 deletions(-)

Thanks Marc, tested the series on SC7180 and SM8150 SoCs which are 
affected by this erratum.

Tested-by: Sai Prakash Ranjan <redacted>

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