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KVM: arm64: Add save/restore support for POR_EL2

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POR_EL2 needs saving when the guest is VHE, and restoring in
any case.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241023145345.1613824-33-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Marc Zyngier 2024-10-23 15:53:40 +01:00 committed by Oliver Upton
parent 5970e9903f
commit de5c2827fb
1 changed files with 6 additions and 0 deletions
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6
arch/arm64/kvm/hyp/vhe/sysreg-sr.c
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@ -58,6 +58,9 @@ static void __sysreg_save_vel2_state(struct kvm_vcpu *vcpu)
__vcpu_sys_reg(vcpu, PIRE0_EL2) = read_sysreg_el1(SYS_PIRE0);
__vcpu_sys_reg(vcpu, PIR_EL2) = read_sysreg_el1(SYS_PIR);
}
if (ctxt_has_s1poe(&vcpu->arch.ctxt))
__vcpu_sys_reg(vcpu, POR_EL2) = read_sysreg_el1(SYS_POR);
}
/*
@ -123,6 +126,9 @@ static void __sysreg_restore_vel2_state(struct kvm_vcpu *vcpu)
write_sysreg_el1(__vcpu_sys_reg(vcpu, PIR_EL2), SYS_PIR);
write_sysreg_el1(__vcpu_sys_reg(vcpu, PIRE0_EL2), SYS_PIRE0);
}
if (ctxt_has_s1poe(&vcpu->arch.ctxt))
write_sysreg_el1(__vcpu_sys_reg(vcpu, POR_EL2), SYS_POR);
}
write_sysreg_el1(__vcpu_sys_reg(vcpu, ESR_EL2), SYS_ESR);