[Qemu-devel] [RFC PATCH 10/26] ppc/xive: record interrupt source MMIO address for hcalls

[Cédric Le Goater]

The address of the MMIO page through which the Event State Buffer is
controlled is returned to the guest by the H_INT_GET_SOURCE_INFO hcall.

Signed-off-by: Cédric Le Goater <address@hidden>
---
 hw/intc/xive.c        | 3 +++
 include/hw/ppc/xive.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index a1cb87a07b76..0db97fd33981 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -344,6 +344,9 @@ static void xive_ics_realize(ICSState *ics, Error **errp)
                                 ICS_BASE(xs)->offset * (1 << xs->esb_shift),
                                 &xs->esb_iomem);
 
+    /* Record base address which is needed by the hcalls */
+    xs->esb_base = x->vc_base + ICS_BASE(xs)->offset * (1 << xs->esb_shift);
+
     qemu_register_reset(xive_ics_reset, xs);
 }
 
diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 1178300c9df3..b06bc861b845 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -43,6 +43,7 @@ struct XiveICSState {
 
     uint64_t     flags;
     uint32_t     esb_shift;
+    hwaddr       esb_base;
     MemoryRegion esb_iomem;
 
     XIVE         *xive;
-- 
2.7.5