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| author | Richard Henderson <richard.henderson@linaro.org> | 2022-05-06 13:02:39 -0500 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-05-09 11:47:54 +0100 |
| commit | 3082b86b107ec7a26352bd18ada295ac1cc4faca (patch) | |
| tree | 1d688557e91434c39542c612bbea4c4ac5a7bc7b | |
| parent | 7cb1e61851332ea661d4ef6c1d958e3cdbffe2d8 (diff) | |
| download | qemu-3082b86b107ec7a26352bd18ada295ac1cc4faca.zip qemu-3082b86b107ec7a26352bd18ada295ac1cc4faca.tar.gz qemu-3082b86b107ec7a26352bd18ada295ac1cc4faca.tar.bz2 | |
target/arm: Enable FEAT_CSV3 for -cpu max
This extension concerns cache 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: 20220506180242.216785-22-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 9765ee3..48522b8 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -16,6 +16,7 @@ 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_CSV3 (Cache speculation variant 3) - 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 07b44a6..40f77de 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -749,6 +749,7 @@ static void aarch64_max_initfn(Object *obj) 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, 2); /* FEAT_CSV2_2 */ + t = FIELD_DP64(t, ID_AA64PFR0, CSV3, 1); /* FEAT_CSV3 */ 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 762b961..ea4eccd 100644 --- a/target/arm/cpu_tcg.c +++ b/target/arm/cpu_tcg.c @@ -74,6 +74,7 @@ void aa32_max_features(ARMCPU *cpu) cpu->isar.id_pfr0 = t; t = cpu->isar.id_pfr2; + t = FIELD_DP32(t, ID_PFR2, CSV3, 1); /* FEAT_CSV3 */ t = FIELD_DP32(t, ID_PFR2, SSBS, 1); /* FEAT_SSBS */ cpu->isar.id_pfr2 = t; |