generalize lgread_u32/lgwrite_u32.

Jes complains that page table code still uses lgread_u32 even though
it now uses general kernel pte types.  The best thing to do is to
generalize lgread_u32 and lgwrite_u32.

This means we lose the efficiency of getuser().  We could potentially
regain it if we used __copy_from_user instead of copy_from_user, but
I'm not certain that our range check is equivalent to access_ok() on
all platforms.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Jes Sorensen <jes@sgi.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/lguest/segments.c b/drivers/lguest/segments.c
index 95eb9cf297bf..c2434ec99f7b 100644
--- a/drivers/lguest/segments.c
+++ b/drivers/lguest/segments.c
@@ -150,7 +150,7 @@ void load_guest_gdt(struct lguest *lg, unsigned long table, u32 num)
                 kill_guest(lg, "too many gdt entries %i", num);
 
         /* We read the whole thing in, then fix it up. */
-        lgread(lg, lg->arch.gdt, table, num * sizeof(lg->arch.gdt[0]));
+        __lgread(lg, lg->arch.gdt, table, num * sizeof(lg->arch.gdt[0]));
         fixup_gdt_table(lg, 0, ARRAY_SIZE(lg->arch.gdt));
         /* Mark that the GDT changed so the core knows it has to copy it again,
          * even if the Guest is run on the same CPU. */
@@ -161,7 +161,7 @@ void guest_load_tls(struct lguest *lg, unsigned long gtls)
 {
         struct desc_struct *tls = &lg->arch.gdt[GDT_ENTRY_TLS_MIN];
 
-        lgread(lg, tls, gtls, sizeof(*tls)*GDT_ENTRY_TLS_ENTRIES);
+        __lgread(lg, tls, gtls, sizeof(*tls)*GDT_ENTRY_TLS_ENTRIES);
         fixup_gdt_table(lg, GDT_ENTRY_TLS_MIN, GDT_ENTRY_TLS_MAX+1);
         lg->changed |= CHANGED_GDT_TLS;
 }