Adding upstream version 6.9.7.upstream/6.9.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 26 insertions, 18 deletions

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 27553673e4..81effbd53d 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -2224,7 +2224,7 @@ static __init void xen_alloc_callback_vector(void)
 		return;
 
 	pr_info("Xen HVM callback vector for event delivery is enabled\n");
-	alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, asm_sysvec_xen_hvm_callback);
+	sysvec_install(HYPERVISOR_CALLBACK_VECTOR, sysvec_xen_hvm_callback);
 }
 #else
 void xen_setup_callback_vector(void) {}
diff --git a/drivers/xen/grant-dma-iommu.c b/drivers/xen/grant-dma-iommu.c
index 6a9fe02c6b..2ee750a03c 100644
--- a/drivers/xen/grant-dma-iommu.c
+++ b/drivers/xen/grant-dma-iommu.c
@@ -51,14 +51,12 @@ static int grant_dma_iommu_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int grant_dma_iommu_remove(struct platform_device *pdev)
+static void grant_dma_iommu_remove(struct platform_device *pdev)
 {
 	struct grant_dma_iommu_device *mmu = platform_get_drvdata(pdev);
 
 	platform_set_drvdata(pdev, NULL);
 	iommu_device_unregister(&mmu->iommu);
-
-	return 0;
 }
 
 static struct platform_driver grant_dma_iommu_driver = {
@@ -67,7 +65,7 @@ static struct platform_driver grant_dma_iommu_driver = {
 		.of_match_table = grant_dma_iommu_of_match,
 	},
 	.probe = grant_dma_iommu_probe,
-	.remove = grant_dma_iommu_remove,
+	.remove_new = grant_dma_iommu_remove,
 };
 
 static int __init grant_dma_iommu_init(void)
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 3205e5d724..1a9ded0cdd 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -65,13 +65,17 @@
 #include "xenbus.h"
 
 
-static int xs_init_irq;
+static int xs_init_irq = -1;
 int xen_store_evtchn;
 EXPORT_SYMBOL_GPL(xen_store_evtchn);
 
 struct xenstore_domain_interface *xen_store_interface;
 EXPORT_SYMBOL_GPL(xen_store_interface);
 
+#define XS_INTERFACE_READY \
+	((xen_store_interface != NULL) && \
+	 (xen_store_interface->connection == XENSTORE_CONNECTED))
+
 enum xenstore_init xen_store_domain_type;
 EXPORT_SYMBOL_GPL(xen_store_domain_type);
 
@@ -751,19 +755,19 @@ static void xenbus_probe(void)
 {
 	xenstored_ready = 1;
 
-	if (!xen_store_interface) {
+	if (!xen_store_interface)
 		xen_store_interface = memremap(xen_store_gfn << XEN_PAGE_SHIFT,
 					       XEN_PAGE_SIZE, MEMREMAP_WB);
-		/*
-		 * Now it is safe to free the IRQ used for xenstore late
-		 * initialization. No need to unbind: it is about to be
-		 * bound again from xb_init_comms. Note that calling
-		 * unbind_from_irqhandler now would result in xen_evtchn_close()
-		 * being called and the event channel not being enabled again
-		 * afterwards, resulting in missed event notifications.
-		 */
+	/*
+	 * Now it is safe to free the IRQ used for xenstore late
+	 * initialization. No need to unbind: it is about to be
+	 * bound again from xb_init_comms. Note that calling
+	 * unbind_from_irqhandler now would result in xen_evtchn_close()
+	 * being called and the event channel not being enabled again
+	 * afterwards, resulting in missed event notifications.
+	 */
+	if (xs_init_irq >= 0)
 		free_irq(xs_init_irq, &xb_waitq);
-	}
 
 	/*
 	 * In the HVM case, xenbus_init() deferred its call to
@@ -822,7 +826,7 @@ static int __init xenbus_probe_initcall(void)
 	if (xen_store_domain_type == XS_PV ||
 	    (xen_store_domain_type == XS_HVM &&
 	     !xs_hvm_defer_init_for_callback() &&
-	     xen_store_interface != NULL))
+	     XS_INTERFACE_READY))
 		xenbus_probe();
 
 	/*
@@ -831,7 +835,7 @@ static int __init xenbus_probe_initcall(void)
 	 * started, then probe.  It will be triggered when communication
 	 * starts happening, by waiting on xb_waitq.
 	 */
-	if (xen_store_domain_type == XS_LOCAL || xen_store_interface == NULL) {
+	if (xen_store_domain_type == XS_LOCAL || !XS_INTERFACE_READY) {
 		struct task_struct *probe_task;
 
 		probe_task = kthread_run(xenbus_probe_thread, NULL,
@@ -1014,6 +1018,12 @@ static int __init xenbus_init(void)
 			xen_store_interface =
 				memremap(xen_store_gfn << XEN_PAGE_SHIFT,
 					 XEN_PAGE_SIZE, MEMREMAP_WB);
+			if (!xen_store_interface) {
+				pr_err("%s: cannot map HVM_PARAM_STORE_PFN=%llx\n",
+				       __func__, v);
+				err = -EINVAL;
+				goto out_error;
+			}
 			if (xen_store_interface->connection != XENSTORE_CONNECTED)
 				wait = true;
 		}