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KVM: arm64: Add a composite EL2 visibility helper

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We are starting to have a bunch of visibility helpers checking
for EL2 + something else, and we are going to add more.

Simplify things somehow by introducing a helper that implement
extractly that by taking a visibility helper as a parameter,
and convert the existing ones to that.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241023145345.1613824-23-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Marc Zyngier 2024-10-23 15:53:30 +01:00 committed by Oliver Upton
parent 364c081029
commit ee3a9a0643
1 changed files with 9 additions and 7 deletions
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16
arch/arm64/kvm/sys_regs.c
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@ -2303,16 +2303,18 @@ static u64 reset_hcr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r)
return __vcpu_sys_reg(vcpu, r->reg) = val;
}
static unsigned int __el2_visibility(const struct kvm_vcpu *vcpu,
const struct sys_reg_desc *rd,
unsigned int (*fn)(const struct kvm_vcpu *,
const struct sys_reg_desc *))
{
return el2_visibility(vcpu, rd) ?: fn(vcpu, rd);
}
static unsigned int sve_el2_visibility(const struct kvm_vcpu *vcpu,
const struct sys_reg_desc *rd)
{
unsigned int r;
r = el2_visibility(vcpu, rd);
if (r)
return r;
return sve_visibility(vcpu, rd);
return __el2_visibility(vcpu, rd, sve_visibility);
}
static bool access_zcr_el2(struct kvm_vcpu *vcpu,