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target/arm: Add FEAT_NV2 to max, neoverse-n2, neoverse-v1 CPUs

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Enable FEAT_NV2 on the 'max' CPU, and stop filtering it out for
the Neoverse N2 and Neoverse V1 CPUs.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
This commit is contained in:
Peter Maydell 2024-01-09 14:43:57 +00:00
parent 3b32140e70
commit e2862554c2
3 changed files with 2 additions and 6 deletions
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1
docs/system/arm/emulation.rst
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@ -64,6 +64,7 @@ the following architecture extensions:
- FEAT_MTE2 (Memory Tagging Extension)
- FEAT_MTE3 (MTE Asymmetric Fault Handling)
- FEAT_NV (Nested Virtualization)
- FEAT_NV2 (Enhanced nested virtualization support)
- FEAT_PACIMP (Pointer authentication - IMPLEMENTATION DEFINED algorithm)
- FEAT_PACQARMA3 (Pointer authentication - QARMA3 algorithm)
- FEAT_PACQARMA5 (Pointer authentication - QARMA5 algorithm)

5
target/arm/cpu.c
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@ -2243,11 +2243,6 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
/* FEAT_MPAM (Memory Partitioning and Monitoring Extension) */
cpu->isar.id_aa64pfr0 =
FIELD_DP64(cpu->isar.id_aa64pfr0, ID_AA64PFR0, MPAM, 0);
/* FEAT_NV2 (Enhanced Nested Virtualization support) */
if (FIELD_EX64(cpu->isar.id_aa64mmfr2, ID_AA64MMFR2, NV) > 1) {
cpu->isar.id_aa64mmfr2 =
FIELD_DP64(cpu->isar.id_aa64mmfr2, ID_AA64MMFR2, NV, 1);
}
}
/* MPU can be configured out of a PMSA CPU either by setting has-mpu

2
target/arm/tcg/cpu64.c
View File

@ -1204,7 +1204,7 @@ void aarch64_max_tcg_initfn(Object *obj)
t = FIELD_DP64(t, ID_AA64MMFR2, UAO, 1); /* FEAT_UAO */
t = FIELD_DP64(t, ID_AA64MMFR2, IESB, 1); /* FEAT_IESB */
t = FIELD_DP64(t, ID_AA64MMFR2, VARANGE, 1); /* FEAT_LVA */
t = FIELD_DP64(t, ID_AA64MMFR2, NV, 1); /* FEAT_NV */
t = FIELD_DP64(t, ID_AA64MMFR2, NV, 2); /* FEAT_NV2 */
t = FIELD_DP64(t, ID_AA64MMFR2, ST, 1); /* FEAT_TTST */
t = FIELD_DP64(t, ID_AA64MMFR2, AT, 1); /* FEAT_LSE2 */
t = FIELD_DP64(t, ID_AA64MMFR2, IDS, 1); /* FEAT_IDST */