Initialize the grant table mapping at the address specified at index 0 in the DT under the /xen node. After the grant table is initialized, call xenbus_probe (if not dom0).
Changes in v2:
- introduce GRANT_TABLE_PHYSADDR; - remove unneeded initialization of boot_max_nr_grant_frames.
Signed-off-by: Stefano Stabellini stefano.stabellini@eu.citrix.com --- arch/arm/xen/enlighten.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index ac3a2d6..e5e92d5 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -1,8 +1,12 @@ #include <xen/xen.h> +#include <xen/grant_table.h> +#include <xen/hvm.h> #include <xen/interface/xen.h> #include <xen/interface/memory.h> +#include <xen/interface/hvm/params.h> #include <xen/features.h> #include <xen/platform_pci.h> +#include <xen/xenbus.h> #include <asm/xen/hypervisor.h> #include <asm/xen/hypercall.h> #include <linux/module.h> @@ -45,17 +49,23 @@ EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range); * - one interrupt for Xen event notifications; * - one memory region to map the grant_table. */ + +#define GRANT_TABLE_PHYSADDR 0 static int __init xen_guest_init(void) { struct xen_add_to_physmap xatp; static struct shared_info *shared_info_page = 0; struct device_node *node; + struct resource res;
node = of_find_compatible_node(NULL, NULL, "arm,xen"); if (!node) { pr_debug("No Xen support\n"); return 0; } + if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res)) + return 0; + xen_hvm_resume_frames = res.start >> PAGE_SHIFT; xen_domain_type = XEN_HVM_DOMAIN;
xen_setup_features(); @@ -89,6 +99,11 @@ static int __init xen_guest_init(void) * is required to use VCPUOP_register_vcpu_info to place vcpu info * for secondary CPUs as they are brought up. */ per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0]; + + gnttab_init(); + if (!xen_initial_domain()) + xenbus_probe(NULL); + return 0; } core_initcall(xen_guest_init);