Messages in this thread Patch in this message | | | From | Jeremy Linton <> | Subject | [PATCH v2 3/3] arm64: cpufeature: Change 32-bit EL0 to display enabled cores | Date | Tue, 17 Oct 2023 00:23:22 -0500 |
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Now that we have the ability to display the list of cores with a feature when it is selectivly enabled, lets display the cores enabled for 32-bit use at EL0.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> --- arch/arm64/kernel/cpufeature.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index b7b67bac0e60..512cbe446b41 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1533,8 +1533,17 @@ static bool has_32bit_el0(const struct arm64_cpu_capabilities *entry, int scope) if (!has_cpuid_feature(entry, scope)) return allow_mismatched_32bit_el0; - if (scope == SCOPE_SYSTEM) - pr_info("detected: 32-bit EL0 Support\n"); + if (scope == SCOPE_SYSTEM) { + struct arm64_cpu_capabilities *has_32bit; + + has_32bit = (struct arm64_cpu_capabilities *)entry; + + has_32bit->cpus = system_32bit_el0_cpumask(); + if (has_32bit->cpus == cpu_possible_mask) + has_32bit->cpus = cpu_online_mask; + if (has_32bit->cpus == cpu_none_mask) + has_32bit->cpus = NULL; + } return true; } @@ -2307,9 +2316,11 @@ static const struct arm64_cpu_capabilities arm64_features[] = { ARM64_CPUID_FIELDS(ID_AA64MMFR2_EL1, NV, IMP) }, { + .desc = "32-bit EL0 Support", .capability = ARM64_HAS_32BIT_EL0_DO_NOT_USE, .type = ARM64_CPUCAP_SYSTEM_FEATURE, .matches = has_32bit_el0, + .cpus = cpu_none_mask, ARM64_CPUID_FIELDS(ID_AA64PFR0_EL1, EL0, AARCH32) }, #ifdef CONFIG_KVM -- 2.41.0
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