From 53981dd50566288904c03e5e7d31b43bc587cb37 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Mon, 6 Jan 2020 15:56:38 +0100 Subject: [PATCH] xive: Use the XIVE fabric link under the XIVE router MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now that the spapr and pnv machines do set the "xive-fabric" link, the use of the XIVE fabric pointer becomes mandatory. This is checked with an assert() in a new realize hook. Since the XIVE router is realized at machine init for the all the machine's life time, no risk to abort an already running guest (ie. not a hotplug path). This gets rid of a qdev_get_machine() call. Signed-off-by: Greg Kurz Signed-off-by: Cédric Le Goater Message-Id: <20200106145645.4539-6-clg@kaod.org> Signed-off-by: David Gibson --- hw/intc/xive.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 6df89b06da..12a362b681 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -1378,6 +1378,13 @@ static int xive_router_get_block_id(XiveRouter *xrtr) return xrc->get_block_id(xrtr); } +static void xive_router_realize(DeviceState *dev, Error **errp) +{ + XiveRouter *xrtr = XIVE_ROUTER(dev); + + assert(xrtr->xfb); +} + /* * Encode the HW CAM line in the block group mode format : * @@ -1470,12 +1477,11 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx, * * The parameters represent what is sent on the PowerBus */ -static bool xive_presenter_notify(uint8_t format, +static bool xive_presenter_notify(XiveFabric *xfb, uint8_t format, uint8_t nvt_blk, uint32_t nvt_idx, bool cam_ignore, uint8_t priority, uint32_t logic_serv) { - XiveFabric *xfb = XIVE_FABRIC(qdev_get_machine()); XiveFabricClass *xfc = XIVE_FABRIC_GET_CLASS(xfb); XiveTCTXMatch match = { .tctx = NULL, .ring = 0 }; int count; @@ -1607,7 +1613,7 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk, return; } - found = xive_presenter_notify(format, nvt_blk, nvt_idx, + found = xive_presenter_notify(xrtr->xfb, format, nvt_blk, nvt_idx, xive_get_field32(END_W7_F0_IGNORE, end.w7), priority, xive_get_field32(END_W7_F1_LOG_SERVER_ID, end.w7)); @@ -1727,6 +1733,8 @@ static void xive_router_class_init(ObjectClass *klass, void *data) dc->desc = "XIVE Router Engine"; dc->props = xive_router_properties; + /* Parent is SysBusDeviceClass. No need to call its realize hook */ + dc->realize = xive_router_realize; xnc->notify = xive_router_notify; }