tree 56e41312b33ca3fe2bca50252f436e5f19e256a8
parent 6bd9cd50c830eb88d571c492ec370a30bf999e15
author venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> 1229723247 -0800
committer H. Peter Anvin <hpa@zytor.com> 1229730030 -0800

x86: PAT: modify follow_phys to return phys_addr prot and return value

Impact: Changes and globalizes an existing static interface.

Follow_phys does similar things as follow_pfnmap_pte. Make a minor change
to follow_phys so that it can be used in place of follow_pfnmap_pte.
Physical address return value with 0 as error return does not work in
follow_phys as the actual physical address 0 mapping may exist in pte.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>