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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-22 05:24:24 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-23 09:49:56 +0400 |
| commit | 2d37f94a28170ca656438758fca577acb49a7932 (patch) | |
| tree | 21049219a98d314a2c442293e512b74d879e6270 /drivers/lguest/hypercalls.c | |
| parent | 56ae43dfe233323683248a5c553bad7160db2fa5 (diff) | |
| download | linux-2d37f94a28170ca656438758fca577acb49a7932.tar.xz | |
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/hypercalls.c')
| -rw-r--r-- | drivers/lguest/hypercalls.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/lguest/hypercalls.c b/drivers/lguest/hypercalls.c index 3a53788ba450..9d5184c7c14a 100644 --- a/drivers/lguest/hypercalls.c +++ b/drivers/lguest/hypercalls.c @@ -47,7 +47,7 @@ static void do_hcall(struct lguest *lg, struct hcall_args *args) char msg[128]; /* If the lgread fails, it will call kill_guest() itself; the * kill_guest() with the message will be ignored. */ - lgread(lg, msg, args->arg1, sizeof(msg)); + __lgread(lg, msg, args->arg1, sizeof(msg)); msg[sizeof(msg)-1] = '\0'; kill_guest(lg, "CRASH: %s", msg); break; |