e9354b5825
1 OBS-URL: https://build.opensuse.org/request/show/483217 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=331
55 lines
2.1 KiB
Diff
55 lines
2.1 KiB
Diff
From e46f223e5fadfeaeecc7a4744733184130b5dd0d Mon Sep 17 00:00:00 2001
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From: Eric Auger <eric.auger@redhat.com>
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Date: Tue, 28 Mar 2017 19:20:40 +0200
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Subject: [PATCH] hw/intc/arm_gicv3_kvm: Check KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS
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in reset
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KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS needs to be checked before
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attempting to read ICC_CTLR_EL1; otherwise kernel versions not
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exposing this kvm device group will be incompatible with qemu 2.9.
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Fixes: 07a5628 ("hw/intc/arm_gicv3_kvm: Reset GICv3 cpu interface registers")
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Reported-by: Prakash B <bjsprakash.linux@gmail.com>
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(agraf: Fixes gicv3 KVM on SP2 kernel)
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Signed-off-by: Alexander Graf <agraf@suse.de>
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---
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hw/intc/arm_gicv3_kvm.c | 17 +++++++++++------
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1 file changed, 11 insertions(+), 6 deletions(-)
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diff --git a/hw/intc/arm_gicv3_kvm.c b/hw/intc/arm_gicv3_kvm.c
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index 81f0403..19aab56 100644
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--- a/hw/intc/arm_gicv3_kvm.c
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+++ b/hw/intc/arm_gicv3_kvm.c
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@@ -614,12 +614,6 @@ static void arm_gicv3_icc_reset(CPUARMState *env, const ARMCPRegInfo *ri)
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s = c->gic;
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cpu = ARM_CPU(c->cpu);
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- /* Initialize to actual HW supported configuration */
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- kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS,
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- KVM_VGIC_ATTR(ICC_CTLR_EL1, cpu->mp_affinity),
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- &c->icc_ctlr_el1[GICV3_NS], false);
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-
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- c->icc_ctlr_el1[GICV3_S] = c->icc_ctlr_el1[GICV3_NS];
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c->icc_pmr_el1 = 0;
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c->icc_bpr[GICV3_G0] = GIC_MIN_BPR;
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c->icc_bpr[GICV3_G1] = GIC_MIN_BPR;
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@@ -628,6 +622,17 @@ static void arm_gicv3_icc_reset(CPUARMState *env, const ARMCPRegInfo *ri)
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c->icc_sre_el1 = 0x7;
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memset(c->icc_apr, 0, sizeof(c->icc_apr));
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memset(c->icc_igrpen, 0, sizeof(c->icc_igrpen));
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+
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+ if (s->migration_blocker) {
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+ return;
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+ }
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+
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+ /* Initialize to actual HW supported configuration */
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+ kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS,
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+ KVM_VGIC_ATTR(ICC_CTLR_EL1, cpu->mp_affinity),
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+ &c->icc_ctlr_el1[GICV3_NS], false);
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+
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+ c->icc_ctlr_el1[GICV3_S] = c->icc_ctlr_el1[GICV3_NS];
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}
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static void kvm_arm_gicv3_reset(DeviceState *dev)
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