Samuel Thibault
2008-Jul-24 11:27 UTC
[Xen-devel] [PATCH] pv-grub: re-implement xc_map_foreign_ranges
pv-grub: re-implement xc_map_foreign_ranges
Also get rid of va and npages members of privcmd_mmap_entry since we do
not need them any more.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
diff -r 9d56e562a570 tools/include/xen-sys/MiniOS/privcmd.h
--- a/tools/include/xen-sys/MiniOS/privcmd.h Thu Jul 24 11:19:13 2008 +0100
+++ b/tools/include/xen-sys/MiniOS/privcmd.h Thu Jul 24 12:26:04 2008 +0100
@@ -10,9 +10,7 @@
} privcmd_hypercall_t;
typedef struct privcmd_mmap_entry {
- u64 va;
u64 mfn;
- u64 npages;
} privcmd_mmap_entry_t;
#endif /* __MINIOS_PUBLIC_PRIVCMD_H__ */
diff -r 9d56e562a570 tools/libxc/xc_minios.c
--- a/tools/libxc/xc_minios.c Thu Jul 24 11:19:13 2008 +0100
+++ b/tools/libxc/xc_minios.c Thu Jul 24 12:26:04 2008 +0100
@@ -80,23 +80,26 @@
size_t size, int prot, size_t chunksize,
privcmd_mmap_entry_t entries[], int nentries)
{
- ERROR("%s: implement me\n");
- return NULL;
+ unsigned long mfns[size / PAGE_SIZE];
+ int i, j, n;
+ unsigned long pt_prot = 0;
+#ifdef __ia64__
+ /* TODO */
+#else
+ if (prot & PROT_READ)
+ pt_prot = L1_PROT_RO;
+ if (prot & PROT_WRITE)
+ pt_prot = L1_PROT;
+#endif
+
+ n = 0;
+ for (i = 0; i < nentries; i++)
+ for (j = 0; j < chunksize / PAGE_SIZE; j++)
+ mfns[n++] = entries[i].mfn + j;
+
+ return map_frames_ex(mfns, n, 1, 0, 1, dom, 0, pt_prot);
}
-
-#if 0
-int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
- privcmd_mmap_entry_t *entries, int nr)
-{
- int i;
- for (i = 0; i < nr; i++) {
- unsigned long mfn = entries[i].mfn;
- do_map_frames(entries[i].va, &mfn, entries[i].npages, 0, 1, dom, 0,
L1_PROT);
- }
- return 0;
-}
-#endif
int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall)
{
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