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[PATCH v2 21/24] target/arm: Enable FEAT_CSV3 for -cpu max
From: |
Richard Henderson |
Subject: |
[PATCH v2 21/24] target/arm: Enable FEAT_CSV3 for -cpu max |
Date: |
Mon, 11 Apr 2022 17:33:23 -0700 |
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>
---
v2: Update emulation.rst
---
docs/system/arm/emulation.rst | 1 +
target/arm/cpu64.c | 1 +
target/arm/cpu_tcg.c | 1 +
3 files changed, 3 insertions(+)
diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst
index aebe3be1ba..f75f0fc110 100644
--- a/docs/system/arm/emulation.rst
+++ b/docs/system/arm/emulation.rst
@@ -15,6 +15,7 @@ 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 98fc3ace1f..2b6b9afd76 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 7775a84575..2592d7008a 100644
--- a/target/arm/cpu_tcg.c
+++ b/target/arm/cpu_tcg.c
@@ -73,6 +73,7 @@ void arm32_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;
--
2.25.1
- [PATCH v2 03/24] target/arm: Move cortex impdef sysregs to cpu_tcg.c, (continued)
- [PATCH v2 03/24] target/arm: Move cortex impdef sysregs to cpu_tcg.c, Richard Henderson, 2022/04/11
- [PATCH v2 04/24] target/arm: Update qemu-system-arm -cpu max to cortex-a57, Richard Henderson, 2022/04/11
- [PATCH v2 08/24] target/arm: Use field names for manipulating EL2 and EL3 modes, Richard Henderson, 2022/04/11
- [PATCH v2 13/24] target/arm: Enable SCR and HCR bits for RAS, Richard Henderson, 2022/04/11
- [PATCH v2 17/24] target/arm: Enable FEAT_IESB for -cpu max, Richard Henderson, 2022/04/11
- [PATCH v2 19/24] target/arm: Update ISAR fields for ARMv8.8, Richard Henderson, 2022/04/11
- [PATCH v2 10/24] target/arm: Enable FEAT_Debugv8p4 for -cpu max, Richard Henderson, 2022/04/11
- [PATCH v2 16/24] target/arm: Enable FEAT_RAS for -cpu max, Richard Henderson, 2022/04/11
- [PATCH v2 14/24] target/arm: Implement virtual SError exceptions, Richard Henderson, 2022/04/11
- [PATCH v2 18/24] target/arm: Enable FEAT_CSV2 for -cpu max, Richard Henderson, 2022/04/11
- [PATCH v2 21/24] target/arm: Enable FEAT_CSV3 for -cpu max,
Richard Henderson <=
- [PATCH v2 05/24] target/arm: Set ID_DFR0.PerfMon for qemu-system-arm -cpu max, Richard Henderson, 2022/04/11
- [PATCH v2 06/24] target/arm: Split out arm32_max_features, Richard Henderson, 2022/04/11
- [PATCH v2 07/24] target/arm: Annotate arm_max_initfn with FEAT identifiers, Richard Henderson, 2022/04/11
- [PATCH v2 15/24] target/arm: Implement ESB instruction, Richard Henderson, 2022/04/11
- [PATCH v2 09/24] target/arm: Enable FEAT_Debugv8p2 for -cpu max, Richard Henderson, 2022/04/11
- [PATCH v2 12/24] target/arm: Add minimal RAS registers, Richard Henderson, 2022/04/11
- [PATCH v2 11/24] target/arm: Add isar_feature_{aa64,any}_ras, Richard Henderson, 2022/04/11
- [PATCH v2 24/24] target/arm: Define neoverse-n1, Richard Henderson, 2022/04/11
- [PATCH v2 23/24] target/arm: Define cortex-a76, Richard Henderson, 2022/04/11
- [PATCH v2 20/24] target/arm: Enable FEAT_CSV2_2 for -cpu max, Richard Henderson, 2022/04/11