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target/arm: Enable FEAT_S2FWB for -cpu max

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Enable the FEAT_S2FWB for -cpu max. Since FEAT_S2FWB requires that
CLIDR_EL1.{LoUU,LoUIS} are zero, we explicitly squash these (the
inherited CLIDR_EL1 value from the Cortex-A57 has them as 1).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220505183950.2781801-5-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-05-05 19:39:50 +01:00
parent 8c7e17ef38
commit e04bf5a793
2 changed files with 12 additions and 0 deletions
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docs/system/arm/emulation.rst
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@ -52,6 +52,7 @@ the following architecture extensions:
- FEAT_RAS (Reliability, availability, and serviceability)
- FEAT_RDM (Advanced SIMD rounding double multiply accumulate instructions)
- FEAT_RNG (Random number generator)
- FEAT_S2FWB (Stage 2 forced Write-Back)
- FEAT_SB (Speculation Barrier)
- FEAT_SEL2 (Secure EL2)
- FEAT_SHA1 (SHA1 instructions)