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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-22 11:24:24 +1000 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-23 15:49:56 +1000 |
| commit | 2d37f94a28170ca656438758fca577acb49a7932 (patch) | |
| tree | 21049219a98d314a2c442293e512b74d879e6270 /drivers/lguest/segments.c | |
| parent | 56ae43dfe233323683248a5c553bad7160db2fa5 (diff) | |
| download | blackbird-op-linux-2d37f94a28170ca656438758fca577acb49a7932.tar.gz blackbird-op-linux-2d37f94a28170ca656438758fca577acb49a7932.zip | |
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>
Diffstat (limited to 'drivers/lguest/segments.c')
| -rw-r--r-- | drivers/lguest/segments.c | 4 |
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; } |
