* [PATCH] KVM: arm64: selftests: Filter ZCR_EL2 in get-reg-list
@ 2025-10-23 23:43 Mark Brown
2025-10-30 16:23 ` Marc Zyngier
0 siblings, 1 reply; 2+ messages in thread
From: Mark Brown @ 2025-10-23 23:43 UTC (permalink / raw)
To: Marc Zyngier, Oliver Upton, Joey Gouly, Suzuki K Poulose,
Paolo Bonzini, Shuah Khan
Cc: linux-arm-kernel, kvmarm, kvm, linux-kselftest, linux-kernel,
Mark Brown
get-reg-list includes ZCR_EL2 in the list of EL2 registers that it looks
for when NV is enabled but does not have any feature gate for this register,
meaning that testing any combination of features that includes EL2 but does
not include SVE will result in a test failure due to a missing register
being reported:
| The following lines are missing registers:
|
| ARM64_SYS_REG(3, 4, 1, 2, 0),
Add ZCR_EL2 to feat_id_regs so that the test knows not to expect to see it
without SVE being enabled.
Fixes: 3a90b6f27964 ("KVM: arm64: selftests: get-reg-list: Add base EL2 registers")
Signed-off-by: Mark Brown <broonie@kernel.org>
---
tools/testing/selftests/kvm/arm64/get-reg-list.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/kvm/arm64/get-reg-list.c b/tools/testing/selftests/kvm/arm64/get-reg-list.c
index c9b84eeaab6b..7ae26ce875ad 100644
--- a/tools/testing/selftests/kvm/arm64/get-reg-list.c
+++ b/tools/testing/selftests/kvm/arm64/get-reg-list.c
@@ -68,6 +68,7 @@ static struct feature_id_reg feat_id_regs[] = {
REG_FEAT(VNCR_EL2, ID_AA64MMFR4_EL1, NV_frac, NV2_ONLY),
REG_FEAT(CNTHV_CTL_EL2, ID_AA64MMFR1_EL1, VH, IMP),
REG_FEAT(CNTHV_CVAL_EL2,ID_AA64MMFR1_EL1, VH, IMP),
+ REG_FEAT(ZCR_EL2, ID_AA64PFR0_EL1, SVE, IMP),
};
bool filter_reg(__u64 reg)
---
base-commit: 211ddde0823f1442e4ad052a2f30f050145ccada
change-id: 20251023-kvm-arm64-get-reg-list-zcr-el2-c43090e11f23
Best regards,
--
Mark Brown <broonie@kernel.org>
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] KVM: arm64: selftests: Filter ZCR_EL2 in get-reg-list
2025-10-23 23:43 [PATCH] KVM: arm64: selftests: Filter ZCR_EL2 in get-reg-list Mark Brown
@ 2025-10-30 16:23 ` Marc Zyngier
0 siblings, 0 replies; 2+ messages in thread
From: Marc Zyngier @ 2025-10-30 16:23 UTC (permalink / raw)
To: Oliver Upton, Joey Gouly, Suzuki K Poulose, Paolo Bonzini,
Shuah Khan, Mark Brown
Cc: linux-arm-kernel, kvmarm, kvm, linux-kselftest, linux-kernel
On Fri, 24 Oct 2025 00:43:39 +0100, Mark Brown wrote:
> get-reg-list includes ZCR_EL2 in the list of EL2 registers that it looks
> for when NV is enabled but does not have any feature gate for this register,
> meaning that testing any combination of features that includes EL2 but does
> not include SVE will result in a test failure due to a missing register
> being reported:
>
> | The following lines are missing registers:
> |
> | ARM64_SYS_REG(3, 4, 1, 2, 0),
>
> [...]
Applied to fixes, thanks!
[1/1] KVM: arm64: selftests: Filter ZCR_EL2 in get-reg-list
commit: a186fbcfd845699d51809f7c7e54cf997fe32820
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
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