x86: Introduce function to get pmd entry pointer

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Introduces lookup_pmd_address() to get the address of the pmd entry
related to a virtual address in the current address space. This
function is needed for support of a virtual mapped sparse p2m list
in xen pv domains, as we need the address of the pmd entry, not the
one of the pte in that case.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>

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Juergen Gross 2014-11-28 11:53:56 +01:00 • committed by David Vrabel

parent 5b8e7d8054

commit 792230c3a6

2 changed files with 21 additions and 0 deletions

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1

arch/x86/include/asm/pgtable_types.h

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20

arch/x86/mm/pageattr.c

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