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authorMarc Zyngier <marc.zyngier@arm.com>2013-11-05 14:12:15 +0000
committerMarc Zyngier <marc.zyngier@arm.com>2013-11-07 19:09:08 +0000
commitce94fe93d566bf381c6ecbd45010d36c5f04d692 (patch)
tree964abbc8b5f43d94543a053cfaa2c7e1b3fc71f5 /arch/arm64
parent6d89d2d9b5bac9dbe40ee106ceda9307b6265234 (diff)
downloadblackbird-op-linux-ce94fe93d566bf381c6ecbd45010d36c5f04d692.tar.gz
blackbird-op-linux-ce94fe93d566bf381c6ecbd45010d36c5f04d692.zip
arm/arm64: KVM: PSCI: propagate caller endianness to the incoming vcpu
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>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/include/asm/kvm_emulate.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index b016577e37a4..db805092698c 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -177,6 +177,14 @@ static inline u8 kvm_vcpu_trap_get_fault(const struct kvm_vcpu *vcpu)
return kvm_vcpu_get_hsr(vcpu) & ESR_EL2_FSC_TYPE;
}
+static inline void kvm_vcpu_set_be(struct kvm_vcpu *vcpu)
+{
+ if (vcpu_mode_is_32bit(vcpu))
+ *vcpu_cpsr(vcpu) |= COMPAT_PSR_E_BIT;
+ else
+ vcpu_sys_reg(vcpu, SCTLR_EL1) |= (1 << 25);
+}
+
static inline bool kvm_vcpu_is_be(struct kvm_vcpu *vcpu)
{
if (vcpu_mode_is_32bit(vcpu))
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