[Xen-ia64-devel] [PATCH] xencomm: tmem support.

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

[IA64] xencomm: tmem support.

add tmem support to xencomm.

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff --git a/arch/ia64/xen/xcom_hcall.c b/arch/ia64/xen/xcom_hcall.c
--- a/arch/ia64/xen/xcom_hcall.c
+++ b/arch/ia64/xen/xcom_hcall.c
@@ -40,6 +40,7 @@
 #include <xen/interface/xenoprof.h>
 #include <xen/interface/vcpu.h>
 #include <xen/interface/kexec.h>
+#include <xen/interface/tmem.h>
 #include <asm/hypervisor.h>
 #include <asm/page.h>
 #include <asm/uaccess.h>
@@ -739,3 +740,15 @@ xencomm_hypercall_kexec_op(int cmd, void
 
        return xencomm_arch_hypercall_kexec_op(cmd, desc);
 }
+
+int
+xencomm_hypercall_tmem_op(struct tmem_op *op)
+{
+       struct xencomm_handle *desc;
+
+       desc = xencomm_map_no_alloc(op, sizeof(*op));
+       if (desc == NULL)
+               return -EINVAL;
+
+       return xencomm_arch_hypercall_tmem_op(desc);
+}
diff --git a/arch/ia64/xen/xcom_privcmd.c b/arch/ia64/xen/xcom_privcmd.c
--- a/arch/ia64/xen/xcom_privcmd.c
+++ b/arch/ia64/xen/xcom_privcmd.c
@@ -32,6 +32,7 @@
 #include <xen/interface/xsm/acm_ops.h>
 #include <xen/interface/hvm/params.h>
 #include <xen/interface/arch-ia64/debug_op.h>
+#include <xen/interface/tmem.h>
 #include <xen/public/privcmd.h>
 #include <asm/hypercall.h>
 #include <asm/page.h>
@@ -897,6 +898,22 @@ xencomm_privcmd_ia64_physdev_op(privcmd_
        return ret;
 }
 
+static int
+xencomm_privcmd_tmem_op(privcmd_hypercall_t *hypercall)
+{
+       struct xencomm_handle *desc;
+       int ret;
+
+       desc = xencomm_map((void *)hypercall->arg[0], sizeof(struct tmem_op));
+       if (desc == NULL)
+               return -ENOMEM;
+
+       ret = xencomm_arch_hypercall_tmem_op(desc);
+
+       xencomm_free(desc);
+       return ret;
+}
+
 int
 privcmd_hypercall(privcmd_hypercall_t *hypercall)
 {
@@ -925,6 +942,8 @@ privcmd_hypercall(privcmd_hypercall_t *h
                return xencomm_privcmd_ia64_debug_op(hypercall);
        case __HYPERVISOR_physdev_op:
                return xencomm_privcmd_ia64_physdev_op(hypercall);
+       case __HYPERVISOR_tmem_op:
+               return xencomm_privcmd_tmem_op(hypercall);
        default:
                printk("%s: unknown hcall (%ld)\n", __func__, hypercall->op);
                return -ENOSYS;
diff --git a/include/asm-ia64/hypercall.h b/include/asm-ia64/hypercall.h
--- a/include/asm-ia64/hypercall.h
+++ b/include/asm-ia64/hypercall.h
@@ -435,6 +435,12 @@ xencomm_arch_hypercall_kexec_op(int cmd,
        return _hypercall2(int, kexec_op, cmd, arg);
 }
 
+static inline int
+xencomm_arch_hypercall_tmem_op(struct xencomm_handle *arg)
+{
+       return _hypercall1(int, tmem_op, arg);
+}
+
 // for balloon driver
 #define HYPERVISOR_update_va_mapping(va, new_val, flags) (0)
 
@@ -455,6 +461,7 @@ xencomm_arch_hypercall_kexec_op(int cmd,
 #define HYPERVISOR_vcpu_op xencomm_hypercall_vcpu_op
 #define HYPERVISOR_opt_feature xencomm_hypercall_opt_feature
 #define HYPERVISOR_kexec_op xencomm_hypercall_kexec_op
+#define HYPERVISOR_tmem_op xencomm_hypercall_tmem_op
 
 /* to compile gnttab_copy_grant_page() in drivers/xen/core/gnttab.c */
 #define HYPERVISOR_mmu_update(req, count, success_count, domid) ({BUG();0;})


-- 
yamahata

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