diff options
| author | Eric Auger <eric.auger@redhat.com> | 2017-03-28 19:20:40 +0200 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-03-31 12:41:14 +0100 |
| commit | e7d54416cf7a30928a455ddf86ca57d766e9a902 (patch) | |
| tree | 2ed2f33afcdd3dc085afb2f8b522c4888626e18a /hw | |
| parent | 05a6f451eb0e3224a8e6d98089379f20ec06c787 (diff) | |
hw/intc/arm_gicv3_kvm: Check KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS in reset
KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS needs to be checked before
attempting to read ICC_CTLR_EL1; otherwise kernel versions not
exposing this kvm device group will be incompatible with qemu 2.9.
Fixes: 07a5628 ("hw/intc/arm_gicv3_kvm: Reset GICv3 cpu interface registers")
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reported-by: Prakash B <bjsprakash.linux@gmail.com>
Tested-by: Alexander Graf <agraf@suse.de>
Message-id: 1490721640-13052-1-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/intc/arm_gicv3_kvm.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/hw/intc/arm_gicv3_kvm.c b/hw/intc/arm_gicv3_kvm.c index 81f0403117..19aab56072 100644 --- a/hw/intc/arm_gicv3_kvm.c +++ b/hw/intc/arm_gicv3_kvm.c @@ -614,12 +614,6 @@ static void arm_gicv3_icc_reset(CPUARMState *env, const ARMCPRegInfo *ri) s = c->gic; cpu = ARM_CPU(c->cpu); - /* Initialize to actual HW supported configuration */ - kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS, - KVM_VGIC_ATTR(ICC_CTLR_EL1, cpu->mp_affinity), - &c->icc_ctlr_el1[GICV3_NS], false); - - c->icc_ctlr_el1[GICV3_S] = c->icc_ctlr_el1[GICV3_NS]; c->icc_pmr_el1 = 0; c->icc_bpr[GICV3_G0] = GIC_MIN_BPR; c->icc_bpr[GICV3_G1] = GIC_MIN_BPR; @@ -628,6 +622,17 @@ static void arm_gicv3_icc_reset(CPUARMState *env, const ARMCPRegInfo *ri) c->icc_sre_el1 = 0x7; memset(c->icc_apr, 0, sizeof(c->icc_apr)); memset(c->icc_igrpen, 0, sizeof(c->icc_igrpen)); + + if (s->migration_blocker) { + return; + } + + /* Initialize to actual HW supported configuration */ + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS, + KVM_VGIC_ATTR(ICC_CTLR_EL1, cpu->mp_affinity), + &c->icc_ctlr_el1[GICV3_NS], false); + + c->icc_ctlr_el1[GICV3_S] = c->icc_ctlr_el1[GICV3_NS]; } static void kvm_arm_gicv3_reset(DeviceState *dev) |