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KVM: arm64: selftests: Cope with lack of GICv3 in set_id_regs

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Broonie reports that the set_id_regs test is failing as of commit
5cb57a1aff ("KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is
presented to the guest"). The test does not anticipate the 'late' ID
register fixup where KVM clobbers the GIC field in absence of GICv3.

While the field technically has FTR_LOWER_SAFE behavior, fix the issue
by setting it to an exact value of 0, matching the effect of the 'late'
fixup.

Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240829004622.3058639-1-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Oliver Upton
2024-08-29 00:46:22 +00:00
committed by Marc Zyngier
parent de2e752093
commit 4641c7ea88
1 changed files with 1 additions and 0 deletions
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1
tools/testing/selftests/kvm/aarch64/set_id_regs.c
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@@ -126,6 +126,7 @@ static const struct reg_ftr_bits ftr_id_aa64pfr0_el1[] = {
REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR0_EL1, CSV2, 0),
REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR0_EL1, DIT, 0),
REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR0_EL1, SEL2, 0),
REG_FTR_BITS(FTR_EXACT, ID_AA64PFR0_EL1, GIC, 0),
REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR0_EL1, EL3, 0),
REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR0_EL1, EL2, 0),
REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR0_EL1, EL1, 0),