linux-toradex.git/include/asm-x86/pgtable.h, branch v2.6.25.12

x86: fix performance drop for glx

2008-03-26T21:23:41+00:00

fix the 3D performance drop reported at:

   http://bugzilla.kernel.org/show_bug.cgi?id=10328

fb drivers are using ioremap()/ioremap_nocache(), followed by mtrr_add with
WC attribute. Recent changes in page attribute code made both
ioremap()/ioremap_nocache() mappings as UC (instead of previous UC-). This
breaks the graphics performance, as the effective memory type is UC instead
of expected WC.

The correct way to fix this is to add ioremap_wc() (which uses UC- in the
absence of PAT kernel support and WC with PAT) and change all the
fb drivers to use this new ioremap_wc() API.

We can take this correct and longer route for post 2.6.25. For now,
revert back to the UC- behavior for ioremap/ioremap_nocache.

Signed-off-by: Suresh Siddha 
Signed-off-by: Venkatesh Pallipadi 
Cc: Arjan van de Ven 
Signed-off-by: Ingo Molnar

x86: sparse warnings in pageattr.c

2008-02-09T22:24:08+00:00

Adjust the definition of lookup_address to take an unsigned long
level argument.  Adjust callers in xen/mmu.c that pass in a
dummy variable.

Signed-off-by: Harvey Harrison 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: cpa, add the PAT bit defines

2008-02-04T15:48:06+00:00

Signed-off-by: Andi Kleen 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: use the same pgd_list for PAE and 64-bit

2008-01-30T12:34:11+00:00

Use a standard list threaded through page->lru for maintaining the pgd
list on PAE.  This is the same as 64-bit, and seems saner than using a
non-standard list via page->index.

Signed-off-by: Jeremy Fitzhardinge 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: cpa: fix the self-test

2008-01-30T12:34:09+00:00

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: add PAGE_KERNEL_EXEC_NOCACHE

2008-01-30T12:34:04+00:00

add PAGE_KERNEL_EXEC_NOCACHE.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: add PG_LEVEL enum

2008-01-30T12:34:04+00:00

this way PG_LEVEL_1GB will be an easy change.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: clean up lookup_address() declarations

2008-01-30T12:34:04+00:00

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: introduce canon_pgprot()

2008-01-30T12:33:53+00:00

Introduce canon_pgprot()

Signed-off-by: Andi Kleen 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: don't drop NX bit in pte modifier functions on 32-bit

2008-01-30T12:33:51+00:00

The pte_* modifier functions that cleared bits dropped the NX bit on 32bit
PAE because they only worked in int, but NX is in bit 63. Fix that
by adding appropiate casts so that the arithmetic happens as long long
on PAE kernels.

I decided to just use 64bit arithmetic instead of open coding like
pte_modify() because gcc should generate good enough code for that now.

Signed-off-by: Andi Kleen 
Acked-by: Jan Beulich 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner