linux-toradex.git/include/asm-x86/pgtable.h, branch v2.6.27.54

x86: implement pte_special

2008-07-26T19:00:05+00:00

Implement the pte_special bit for x86.  This is required to support
lockless get_user_pages, because we need to know whether or not we can
refcount a particular page given only its pte (and no vma).

[hugh@veritas.com: fix a BUG]
Signed-off-by: Nick Piggin 
Cc: Dave Kleikamp 
Cc: Andy Whitcroft 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: Andi Kleen 
Cc: Dave Kleikamp 
Cc: Badari Pulavarty 
Cc: Zach Brown 
Cc: Jens Axboe 
Reviewed-by: Peter Zijlstra 
Signed-off-by: Hugh Dickins 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

x86: add PTE_FLAGS_MASK

2008-07-22T08:43:45+00:00

PTE_PFN_MASK was getting lonely, so I made it a friend.

Signed-off-by: Jeremy Fitzhardinge 
Cc: Rusty Russell 
Signed-off-by: Ingo Molnar

x86: rename PTE_MASK to PTE_PFN_MASK

2008-07-22T08:43:44+00:00

Rusty, in his peevish way, complained that macros defining constants
should have a name which somewhat accurately reflects the actual
purpose of the constant.

Aside from the fact that PTE_MASK gives no clue as to what's actually
being masked, and is misleadingly similar to the functionally entirely
different PMD_MASK, PUD_MASK and PGD_MASK, I don't really see what the
problem is.

But if this patch silences the incessent noise, then it will have
achieved its goal (TODO: write test-case).

Signed-off-by: Jeremy Fitzhardinge 
Cc: Rusty Russell 
Signed-off-by: Ingo Molnar

x86/paravirt: call paravirt_pagetable_setup_{start, done}

2008-07-16T08:53:43+00:00

Call paravirt_pagetable_setup_{start,done}

These paravirt_ops functions were not being called on x86_64.

Signed-off-by: Eduardo Habkost 
Signed-off-by: Jeremy Fitzhardinge 
Cc: Stephen Tweedie 
Cc: Mark McLoughlin 
Signed-off-by: Ingo Molnar

x86: map UV chipset space - pagetable

2008-07-09T05:43:23+00:00

Add boot-time function for creating additional 2MB page table entries for
mapping chipset specific cached/uncached ranges.

Signed-off-by: Jack Steiner 
Cc: linux-mm@kvack.org
Signed-off-by: Ingo Molnar

x86_32: remove __PAGE_KERNEL(_EXEC)

2008-07-08T11:16:29+00:00

From: Jeremy Fitzhardinge 

Older x86-32 processors do not support global mappings (PGD), so must
only use it if the processor supports it.

The _PAGE_KERNEL* flags always have _PAGE_KERNEL set, since logically
we always want it set.

This is OK even on processors which do not support PGD, since all
_PAGE flags are masked with __supported_pte_mask before being turned
into a real in-pagetable pte.  On 32-bit systems, __supported_pte_mask
is initialized to not contain _PAGE_GLOBAL, and it is then added if
the CPU is found to support it.

The x86-32 code used to use __PAGE_KERNEL/__PAGE_KERNEL_EXEC for this
purpose, but they're now redundant and can be removed.

Signed-off-by: Jeremy Fitzhardinge 
Cc: Stephen Tweedie 
Cc: Eduardo Habkost 
Cc: Mark McLoughlin 
Signed-off-by: Ingo Molnar

x86: always set _PAGE_GLOBAL in _PAGE_KERNEL* flags

2008-07-08T11:16:28+00:00

Consistently set _PAGE_GLOBAL in _PAGE_KERNEL flags.  This makes 32-
and 64-bit code consistent, and removes some special cases where
__PAGE_KERNEL* did not have _PAGE_GLOBAL set, causing confusion as a
result of the inconsistencies.

This patch only affects x86-64, which generally always supports PGD.
The x86-32 patch is next.

Signed-off-by: Jeremy Fitzhardinge 
Cc: Stephen Tweedie 
Cc: Eduardo Habkost 
Cc: Mark McLoughlin 
Signed-off-by: Ingo Molnar

x86: unify pgd_index

2008-07-08T11:10:30+00:00

pgd_index is common for 32 and 64-bit, so move it to a common place.

Signed-off-by: Jeremy Fitzhardinge 
Cc: xen-devel 
Cc: Stephen Tweedie 
Cc: Eduardo Habkost 
Cc: Mark McLoughlin 
Signed-off-by: Ingo Molnar

x86: asm-x86/pgtable.h: fix compiler warning

2008-07-08T11:10:23+00:00

Signed-off-by: Jeremy Fitzhardinge 
Cc: xen-devel 
Cc: Stephen Tweedie 
Cc: Eduardo Habkost 
Cc: Mark McLoughlin 
Signed-off-by: Ingo Molnar

Merge branch 'x86/fixmap' into x86/devel

2008-07-08T10:24:29+00:00

Conflicts:

	arch/x86/mm/init_64.c

Signed-off-by: Ingo Molnar