lguest: use PGDIR_SHIFT for PAE code to allow different PAGE_OFFSET
We still assume the Guest and Host have the same PAGE_OFFSET settings, but now we don't assume 0xC0000000. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Matias Zabaljauregui <zabaljauregui@gmail.com>
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@ -996,11 +996,9 @@ static unsigned long setup_pagetables(struct lguest *lg,
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if (copy_to_user(&pgdir[0], &pgd, sizeof(pgd)) != 0)
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return -EFAULT;
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/*
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* And the third PGD entry (ie. addresses 3G-4G).
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*
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* FIXME: This assumes that PAGE_OFFSET for the Guest is 0xC0000000.
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* And the other PGD entry to make the linear mapping at PAGE_OFFSET
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*/
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if (copy_to_user(&pgdir[3], &pgd, sizeof(pgd)) != 0)
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if (copy_to_user(&pgdir[KERNEL_PGD_BOUNDARY], &pgd, sizeof(pgd)))
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return -EFAULT;
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#else
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/*
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