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arm/arm64: KVM: PSCI: propagate caller endianness to the incoming vcpu

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When booting a vcpu using PSCI, make sure we start it with the
endianness of the caller. Otherwise, secondaries can be pretty
unhappy to execute a BE kernel in LE mode...

This conforms to PSCI spec Rev B, 5.13.3.

Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier
2013-11-05 14:12:15 +00:00
parent 6d89d2d9b5
commit ce94fe93d5
3 changed files with 17 additions and 0 deletions
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5
arch/arm/include/asm/kvm_emulate.h
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@@ -157,6 +157,11 @@ static inline u32 kvm_vcpu_hvc_get_imm(struct kvm_vcpu *vcpu)
return kvm_vcpu_get_hsr(vcpu) & HSR_HVC_IMM_MASK;
}
static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu)
{
*vcpu_cpsr(vcpu) |= PSR_E_BIT;
}
static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu)
{
return !!(*vcpu_cpsr(vcpu) & PSR_E_BIT);