The guest physical address of the event queue will be part of the
state to transfer in the migration. Let's just record it when the
queue is configured.
Signed-off-by: Cédric Le Goater <clg@xxxxxxxx>
---
arch/powerpc/include/asm/xive.h | 1 +
arch/powerpc/kvm/book3s_xive_native.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
index aef28248b5b7..4096e4164ada 100644
--- a/arch/powerpc/include/asm/xive.h
+++ b/arch/powerpc/include/asm/xive.h
@@ -73,6 +73,7 @@ struct xive_q {
u32 esc_irq;
atomic_t count;
atomic_t pending_count;
+ u64 guest_qpage;
};
/* Global enable flags for the XIVE support */
diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c
index 789c137f6b31..d705de3c5d65 100644
--- a/arch/powerpc/kvm/book3s_xive_native.c
+++ b/arch/powerpc/kvm/book3s_xive_native.c
@@ -693,6 +693,9 @@ static int kvmppc_h_int_set_queue_config(struct kvm_vcpu *vcpu,
}
qaddr = page_to_virt(page) + (qpage & ~PAGE_MASK);
+ /* Backup queue page guest address for migration */
+ q->guest_qpage = qpage;
+
rc = xive_native_configure_queue(xc->vp_id, q, priority,
(__be32 *) qaddr, qsize, true);
if (rc) {
--
2.13.6
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