[RFC,10/16] KVM: PPC: Book3S HV: add a EISN attribute to kvmppc_xive_irq_state

Commit Message

Cédric Le Goater April 23, 2018, 4:43 p.m. UTC

The Effective IRQ Source Number is the number pushed in the event
queue that the guest OS will dispatch internally.

Signed-off-by: Cédric Le Goater <[e-mail]>
---
 arch/powerpc/kvm/book3s_xive.c | 1 +
 arch/powerpc/kvm/book3s_xive.h | 3 +++
 2 files changed, 4 insertions(+)

Patch

diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c
index 10e2ceae7b04..abb4ae5c5b91 100644
--- a/arch/powerpc/kvm/book3s_xive.c
+++ b/arch/powerpc/kvm/book3s_xive.c
@@ -1447,6 +1447,7 @@  struct kvmppc_xive_src_block *kvmppc_xive_create_src_block(
 
 	for (i = 0; i < KVMPPC_XICS_IRQ_PER_ICS; i++) {
 		sb->irq_state[i].number = (bid << KVMPPC_XICS_ICS_SHIFT) | i;
+		sb->irq_state[i].eisn = 0;
 		sb->irq_state[i].guest_priority = MASKED;
 		sb->irq_state[i].saved_priority = MASKED;
 		sb->irq_state[i].act_priority = MASKED;
diff --git a/arch/powerpc/kvm/book3s_xive.h b/arch/powerpc/kvm/book3s_xive.h
index ae4a670eea63..67e07b41061d 100644
--- a/arch/powerpc/kvm/book3s_xive.h
+++ b/arch/powerpc/kvm/book3s_xive.h
@@ -57,6 +57,9 @@  struct kvmppc_xive_irq_state {
 	bool saved_p;
 	bool saved_q;
 	u8 saved_scan_prio;
+
+	/* Xive native */
+	u32 eisn;			/* Guest Effective IRQ number */
 };
 
 /* Select the "right" interrupt (IPI vs. passthrough) */