Christian Borntraeger <borntraeger@xxxxxxxxxxxxx> writes:
> in rare cases, e.g. for injecting a machine check we do intercept all
> load PSW instructions via ICTL_LPSW. With facility 193 a new variant
> LPSWEY was added. KVM needs to handle that as well.
>
> Fixes: a3efa8429266 ("KVM: s390: gen_facilities: allow facilities 165, 193, 194 and 196")
> Reported-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>
> ---
> arch/s390/include/asm/kvm_host.h | 1 +
> arch/s390/kvm/kvm-s390.c | 1 +
> arch/s390/kvm/kvm-s390.h | 15 +++++++++++++++
> arch/s390/kvm/priv.c | 32 ++++++++++++++++++++++++++++++++
> 4 files changed, 49 insertions(+)
>
> diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
> index 111eb5c74784..1b326f3c3383 100644
> --- a/arch/s390/kvm/kvm-s390.h
> +++ b/arch/s390/kvm/kvm-s390.h
> @@ -138,6 +138,21 @@ static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, u8 *ar)
> return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
> }
>
> +static inline u64 kvm_s390_get_base_disp_siy(struct kvm_vcpu *vcpu, u8 *ar)
> +{
> + u32 base1 = vcpu->arch.sie_block->ipb >> 28;
> + s64 disp1;
> +
Whitespace error. With that removed:
Reviewed-by: Sven Schnelle <svens@xxxxxxxxxxxxx>
> + /* The displacement is a 20bit _SIGNED_ value */
> + disp1 = sign_extend64(((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
> + ((vcpu->arch.sie_block->ipb & 0xff00) << 4), 19);
> +
> + if (ar)
> + *ar = base1;
> +
> + return (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
> +}
