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| author | Peter Maydell <peter.maydell@linaro.org> | 2024-04-18 16:20:01 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2024-04-30 15:01:07 +0100 |
| commit | e197395180511b093027c2bac3a34e6a84ddecdc (patch) | |
| tree | fd63608fab4425c60c42d8f5b18fd9024bf7ade3 /docs/system | |
| parent | bc980d66308d3eabf8718477083c5989ea71ad42 (diff) | |
| download | focaccia-qemu-e197395180511b093027c2bac3a34e6a84ddecdc.tar.gz focaccia-qemu-e197395180511b093027c2bac3a34e6a84ddecdc.zip | |
target/arm: Enable FEAT_CSV2_3 for -cpu max
FEAT_CSV2_3 adds a mechanism to identify if hardware cannot disclose information about whether branch targets and branch history trained in one hardware described context can control speculative execution in a different hardware context. There is no branch prediction in TCG, so we don't need to do anything to be compliant with this. Upadte the '-cpu max' ID registers to advertise the feature. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20240418152004.2106516-3-peter.maydell@linaro.org
Diffstat (limited to 'docs/system')
| -rw-r--r-- | docs/system/arm/emulation.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst index 5fdc64a944..d70b66f753 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -32,6 +32,7 @@ the following architecture extensions: - FEAT_CSV2_1p1 (Cache speculation variant 2, version 1.1) - FEAT_CSV2_1p2 (Cache speculation variant 2, version 1.2) - FEAT_CSV2_2 (Cache speculation variant 2, version 2) +- FEAT_CSV2_3 (Cache speculation variant 2, version 3) - FEAT_CSV3 (Cache speculation variant 3) - FEAT_DGH (Data gathering hint) - FEAT_DIT (Data Independent Timing instructions) |