spapr/xive: EQ page should be naturally aligned
When the OS configures the EQ page in which to receive event
notifications from the XIVE interrupt controller, the page should be
naturally aligned. Add this check.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190508171946.657-2-clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
[dwg: Minor change for printf warning on some platforms]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
index 097f88d..33da1a5 100644
--- a/hw/intc/spapr_xive.c
+++ b/hw/intc/spapr_xive.c
@@ -993,6 +993,12 @@
case 16:
case 21:
case 24:
+ if (!QEMU_IS_ALIGNED(qpage, 1ul << qsize)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "XIVE: EQ @0x%" HWADDR_PRIx
+ " is not naturally aligned with %" HWADDR_PRIx "\n",
+ qpage, (hwaddr)1 << qsize);
+ return H_P4;
+ }
end.w2 = cpu_to_be32((qpage >> 32) & 0x0fffffff);
end.w3 = cpu_to_be32(qpage & 0xffffffff);
end.w0 |= cpu_to_be32(END_W0_ENQUEUE);
