Commit 2ab75df3 authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Cornelia Huck
Browse files

s390x/kvm: Fix vector validity bit in device machine checks 



Device hotplugs trigger a crw machine check. All machine checks
have validity bits for certain register types. With vector support
we also have to claim that vector registers are valid.
This is a band-aid suitable for stable. Long term we should
create the full  mcic value dynamically depending on the active
features in the kernel interrupt handler.

Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
parent 085b0b05

target-s390x/kvm.c

+3 −0
Original line number Diff line number Diff line
@@ -2072,6 +2072,9 @@ void kvm_s390_crw_mchk(void) 
        .u.mchk.cr14 = 1 << 28,

        .u.mchk.mcic = 0x00400f1d40330000ULL,

    };

    if (kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS)) {

        irq.u.mchk.mcic |= 0x0000004000000000ULL;

    }

    kvm_s390_floating_interrupt(&irq);

}