Displaying 6 results from an estimated 6 matches for "pdpes".
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pdpe
2007 Apr 18
0
[PATCH 2/2] Use page present for pae pdpes
Ok, the use of "1 + " and subtraction of one for PAE PDPEs has confused
many people now. Make it explicit what is going on and why anding with
PAGE_MASK is a better idea to strip these bits.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Depends-on: add-pgtable-allocation-notifiers
Index: linux-2.6.13/arch/i386/mm/pgtable.c
=======================...
2007 Apr 18
0
[PATCH 2/2] Use page present for pae pdpes
Ok, the use of "1 + " and subtraction of one for PAE PDPEs has confused
many people now. Make it explicit what is going on and why anding with
PAGE_MASK is a better idea to strip these bits.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Depends-on: add-pgtable-allocation-notifiers
Index: linux-2.6.13/arch/i386/mm/pgtable.c
=======================...
2007 Apr 18
2
pgd_alloc and [cd]tors
Is there any real use in having a ctor/dtor for the pgd cache? Given
that all pgd allocation happens via pgd_alloc/pgd_free, why not just
fold the [cd]tor in?
I'm asking because Xen wants pgd[3] to be unshared in the PAE case, and
it looks to me like the easiest way to handle that is by making
pgd_alloc/free pv-ops and doing the appropriate thing in the Xen code.
Would need to sort out the
2007 Apr 18
2
pgd_alloc and [cd]tors
Is there any real use in having a ctor/dtor for the pgd cache? Given
that all pgd allocation happens via pgd_alloc/pgd_free, why not just
fold the [cd]tor in?
I'm asking because Xen wants pgd[3] to be unshared in the PAE case, and
it looks to me like the easiest way to handle that is by making
pgd_alloc/free pv-ops and doing the appropriate thing in the Xen code.
Would need to sort out the
2007 Apr 18
1
[PATCH 1/5] Add pagetable allocation notifiers
...chitecture at the time prior to a
page being used as a page table at all levels, for PAE and non-PAE kernels.
Note that in PAE mode, multiple PDP roots may exist on the same page with
other data, so the root must be shadowed instead. This is not a performance
issue, since PAE only uses 4 top level PDPEs.
The hooks are:
SetPagePTE(ppn) - indicates that a given physical page is going to be used
as a page table.
SetPagePDE(ppn) - indicates that a given physical page is going to be used
as a page directory.
ClearPageXXX(ppn) - indicates that the physical page is now done being
used as a certain ty...
2007 Apr 18
1
[PATCH 1/5] Add pagetable allocation notifiers
...chitecture at the time prior to a
page being used as a page table at all levels, for PAE and non-PAE kernels.
Note that in PAE mode, multiple PDP roots may exist on the same page with
other data, so the root must be shadowed instead. This is not a performance
issue, since PAE only uses 4 top level PDPEs.
The hooks are:
SetPagePTE(ppn) - indicates that a given physical page is going to be used
as a page table.
SetPagePDE(ppn) - indicates that a given physical page is going to be used
as a page directory.
ClearPageXXX(ppn) - indicates that the physical page is now done being
used as a certain ty...