[PATCH 14/24] xen/arm: initialize grant_table on ARM
From: Stefano Stabellini <hidden>
Date: 2012-07-26 15:57:10
Also in:
lkml, xen-devel
Subsystem:
arm port, the rest, xen hypervisor arm, xen hypervisor interface · Maintainers:
Russell King, Linus Torvalds, Stefano Stabellini, Juergen Gross
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). Signed-off-by: Stefano Stabellini <redacted> --- arch/arm/xen/enlighten.c | 13 +++++++++++++ drivers/xen/grant-table.c | 2 +- 2 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 2e013cf..854af1e 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c@@ -1,8 +1,12 @@ #include <xen/xen.h> #include <xen/interface/xen.h> #include <xen/interface/memory.h> +#include <xen/interface/hvm/params.h> #include <xen/platform_pci.h> #include <xen/features.h> +#include <xen/grant_table.h> +#include <xen/hvm.h> +#include <xen/xenbus.h> #include <asm/xen/hypervisor.h> #include <asm/xen/hypercall.h> #include <linux/module.h>
@@ -51,12 +55,16 @@ 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_info("No Xen support\n"); return 0; } + if (of_address_to_resource(node, 0, &res)) + return -EINVAL; + xen_hvm_resume_frames = res.start >> PAGE_SHIFT; xen_domain_type = XEN_HVM_DOMAIN; xen_setup_features();
@@ -97,6 +105,11 @@ int __init xen_guest_init(void) per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu]; } + + gnttab_init(); + if (!xen_initial_domain()) + xenbus_probe(NULL); + return 0; } EXPORT_SYMBOL_GPL(xen_guest_init);
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 1d0d95e..fd2137a 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c@@ -62,7 +62,7 @@ static grant_ref_t **gnttab_list; static unsigned int nr_grant_frames; -static unsigned int boot_max_nr_grant_frames; +static unsigned int boot_max_nr_grant_frames = 1; static int gnttab_free_count; static grant_ref_t gnttab_free_head; static DEFINE_SPINLOCK(gnttab_list_lock);
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1.7.2.5