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generalize lgread_u32/lgwrite_u32.

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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>
This commit is contained in:
Rusty Russell 2007-10-22 11:24:24 +10:00
parent 56ae43dfe2
commit 2d37f94a28
7 changed files with 38 additions and 46 deletions
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2
drivers/lguest/interrupts_and_traps.c
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@ -45,7 +45,7 @@ static void push_guest_stack(struct lguest *lg, unsigned long *gstack, u32 val)
{
/* Stack grows upwards: move stack then write value. */
*gstack -= 4;
lgwrite_u32(lg, *gstack, val);
lgwrite(lg, *gstack, u32, val);
}
/*H:210 The set_guest_interrupt() routine actually delivers the interrupt or