[Xen-devel] [PATCH ARM v5 08/20] mini-os: added arch_init_gnttab

[Thomas Leonard <talex5@xxxxxxxxx>]

From: Karim Raslan <karim.allah.ahmed@xxxxxxxxx>

Moves some x86-specific code into arch/x86.

Signed-off-by: Karim Allah Ahmed <karim.allah.ahmed@xxxxxxxxx>
[talex5@xxxxxxxxx: split into multiple patches]
Signed-off-by: Thomas Leonard <talex5@xxxxxxxxx>
---
 extras/mini-os/arch/x86/mm.c    | 13 +++++++++++++
 extras/mini-os/gnttab.c         |  9 +--------
 extras/mini-os/include/gnttab.h |  1 +
 3 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/extras/mini-os/arch/x86/mm.c b/extras/mini-os/arch/x86/mm.c
index 35df15b..9c6d1b8 100644
--- a/extras/mini-os/arch/x86/mm.c
+++ b/extras/mini-os/arch/x86/mm.c
@@ -942,3 +942,16 @@ void arch_init_mm(unsigned long* start_pfn_p, unsigned 
long* max_pfn_p)
     *start_pfn_p = start_pfn;
     *max_pfn_p = max_pfn;
 }
+
+grant_entry_t *arch_init_gnttab(int nr_grant_frames)
+{
+    struct gnttab_setup_table setup;
+    unsigned long frames[nr_grant_frames];
+
+    setup.dom = DOMID_SELF;
+    setup.nr_frames = nr_grant_frames;
+    set_xen_guest_handle(setup.frame_list, frames);
+
+    HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
+    return map_frames(frames, nr_grant_frames);
+}
diff --git a/extras/mini-os/gnttab.c b/extras/mini-os/gnttab.c
index 6f25006..f395d12 100644
--- a/extras/mini-os/gnttab.c
+++ b/extras/mini-os/gnttab.c
@@ -172,8 +172,6 @@ gnttabop_error(int16_t status)
 void
 init_gnttab(void)
 {
-    struct gnttab_setup_table setup;
-    unsigned long frames[NR_GRANT_FRAMES];
     int i;
 
 #ifdef GNT_DEBUG
@@ -182,12 +180,7 @@ init_gnttab(void)
     for (i = NR_RESERVED_ENTRIES; i < NR_GRANT_ENTRIES; i++)
         put_free_entry(i);
 
-    setup.dom = DOMID_SELF;
-    setup.nr_frames = NR_GRANT_FRAMES;
-    set_xen_guest_handle(setup.frame_list, frames);
-
-    HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
-    gnttab_table = map_frames(frames, NR_GRANT_FRAMES);
+    gnttab_table = arch_init_gnttab(NR_GRANT_FRAMES);
     printk("gnttab_table mapped at %p.\n", gnttab_table);
 }
 
diff --git a/extras/mini-os/include/gnttab.h b/extras/mini-os/include/gnttab.h
index acd6c39..c43ad42 100644
--- a/extras/mini-os/include/gnttab.h
+++ b/extras/mini-os/include/gnttab.h
@@ -12,5 +12,6 @@ unsigned long gnttab_end_transfer(grant_ref_t gref);
 int gnttab_end_access(grant_ref_t ref);
 const char *gnttabop_error(int16_t status);
 void fini_gnttab(void);
+grant_entry_t *arch_init_gnttab(int nr_grant_frames);
 
 #endif /* !__GNTTAB_H__ */
-- 
2.0.0


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