diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2022-05-06 13:02:37 -0500 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-05-09 11:47:54 +0100 |
| commit | 74b17e16695b93261b1c3ffb73031d574aba2b8e (patch) | |
| tree | aacdd002135cb2323dd7afed632c651145e12b60 | |
| parent | 880cd10e84775d3cca599bf872a9362b02322747 (diff) | |
target/arm: Enable FEAT_CSV2 for -cpu max
This extension concerns branch speculation, which TCG does
not implement. Thus we can trivially enable this feature.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220506180242.216785-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | docs/system/arm/emulation.rst | 1 | ||||
| -rw-r--r-- | target/arm/cpu64.c | 1 | ||||
| -rw-r--r-- | target/arm/cpu_tcg.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst index b200012d89..b2a3e2a437 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -12,6 +12,7 @@ the following architecture extensions: - FEAT_BBM at level 2 (Translation table break-before-make levels) - FEAT_BF16 (AArch64 BFloat16 instructions) - FEAT_BTI (Branch Target Identification) +- FEAT_CSV2 (Cache speculation variant 2) - FEAT_DIT (Data Independent Timing instructions) - FEAT_DPB (DC CVAP instruction) - FEAT_Debugv8p2 (Debug changes for v8.2) diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index 10410619f9..25fe74f928 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -748,6 +748,7 @@ static void aarch64_max_initfn(Object *obj) t = FIELD_DP64(t, ID_AA64PFR0, SVE, 1); t = FIELD_DP64(t, ID_AA64PFR0, SEL2, 1); /* FEAT_SEL2 */ t = FIELD_DP64(t, ID_AA64PFR0, DIT, 1); /* FEAT_DIT */ + t = FIELD_DP64(t, ID_AA64PFR0, CSV2, 1); /* FEAT_CSV2 */ cpu->isar.id_aa64pfr0 = t; t = cpu->isar.id_aa64pfr1; diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c index c5cf7efe95..762b961707 100644 --- a/target/arm/cpu_tcg.c +++ b/target/arm/cpu_tcg.c @@ -68,6 +68,7 @@ void aa32_max_features(ARMCPU *cpu) cpu->isar.id_mmfr4 = t; t = cpu->isar.id_pfr0; + t = FIELD_DP32(t, ID_PFR0, CSV2, 2); /* FEAT_CVS2 */ t = FIELD_DP32(t, ID_PFR0, DIT, 1); /* FEAT_DIT */ t = FIELD_DP32(t, ID_PFR0, RAS, 1); /* FEAT_RAS */ cpu->isar.id_pfr0 = t; |