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xen-devel
Re: [Xen-devel] XENFEAT_writable_pagetables vs VMASST_TYPE_writable_page
On 31 May 2006, at 16:09, Jacob Gorm Hansen wrote:
This works everywhere, except the call at the bottom of pgd_walk()
when called from __pgd_unpin(). If the pgd is not writable after
unpin, weird stuff starts to happen --- the next call to pmd_clear()
from free_pte_range() fails in Xen, citing incorrect page types.
Can you tell me why linux/xen/the wrpt implementation cannot handle
the unpinned pgd being mapped read-only like this?
I'll need to see a backtrace, or at least the particular error message
from Xen.
-- Keir
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