target/arm: Advertise Cortex-A53 erratum #843419 fix via REVIDR
commitaa29cdd6e3d430ad6bae4281512c2b7df9e12e98
authorArd Biesheuvel <ardb@kernel.org>
Mon, 26 Feb 2024 14:07:22 +0000 (26 14:07 +0000)
committerPeter Maydell <peter.maydell@linaro.org>
Tue, 27 Feb 2024 13:01:41 +0000 (27 13:01 +0000)
tree6a08d599c66ed6dbd3e1eef5ad1816c7e83d12bc
parent5306ff73fea63d62bc3908c9cad9a88523cb1637
target/arm: Advertise Cortex-A53 erratum #843419 fix via REVIDR

The Cortex-A53 r0p4 revision that QEMU emulates is affected by a CatA
erratum #843419 (i.e., the most severe), which requires workarounds in
the toolchain as well as the OS.

Since the emulation is obviously not affected in the same way, we can
indicate this via REVIDR bit #8, which on r0p4 has the meaning that no
workarounds for erratum #843419 are needed.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240215160202.2803452-1-ardb+git@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target/arm/cpu64.c