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xen: Hide get_phys_to_machine() to be able to tune common path

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Today get_phys_to_machine() is always called when the mfn for a pfn
is to be obtained. Add a wrapper __pfn_to_mfn() as inline function
to be able to avoid calling get_phys_to_machine() when possible as
soon as the switch to a linear mapped p2m list has been done.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Juergen Gross
2014-11-28 11:53:57 +01:00
committed by David Vrabel
parent 792230c3a6
commit 0aad568983
3 changed files with 24 additions and 10 deletions
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2
arch/x86/xen/mmu.c
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@@ -387,7 +387,7 @@ static pteval_t pte_pfn_to_mfn(pteval_t val)
unsigned long mfn;
if (!xen_feature(XENFEAT_auto_translated_physmap))
mfn = get_phys_to_machine(pfn);
mfn = __pfn_to_mfn(pfn);
else
mfn = pfn;
/*