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f4ae17aa0f
linux/arch/mips/mm
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Jayachandran C f4ae17aa0f MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT 
Allow usage of scratch register for current pgd even when
MIPS_PGD_C0_CONTEXT is not configured. MIPS_PGD_C0_CONTEXT is set
for 64r2 platforms to indicate availability of Xcontext for saving
cpuid, thus freeing Context to be used for saving PGD. This option
was also tied to using a scratch register for storing PGD.

This commit will allow usage of scratch register to store the current
pgd if one can be allocated for the platform, even when
MIPS_PGD_C0_CONTEXT is not set. The cpuid will be kept in the CP0
Context register in this case.

The code to store the current pgd for the TLB miss handler is now
generated in all cases. When scratch register is available, the PGD
is also stored in the scratch register.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/5906/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-10-29 21:24:51 +01:00
..
c-octeon.c MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
c-r3k.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
c-r4k.c MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches 2013-10-02 10:58:50 +02:00
c-tx39.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
cache.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
cerr-sb1.c MIPS: Sibyte: Fix build for SIBYTE_BW_TRACE on BCM1x55 and BCM1x80. 2013-06-21 18:07:02 +02:00
cex-gen.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cex-oct.S MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
cex-sb1.S MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
dma-default.c MIPS: Remove unnecessary platform dma helper functions 2013-10-29 21:24:40 +01:00
extable.c
fault.c arch: mm: pass userspace fault flag to generic fault handler 2013-09-12 15:38:01 -07:00
gup.c MIPS: Fix get_user_page_fast() for mips with cache alias 2013-08-26 15:26:48 +02:00
highmem.c MIPS: Highmem: Fix build error if CONFIG_DEBUG_HIGHMEM is disabled 2012-12-13 18:15:27 +01:00
hugetlbpage.c mm: migrate: check movability of hugepage in unmap_and_move_huge_page() 2013-09-11 15:57:49 -07:00
init.c MIPS: Export copy_from_user_page() (needed by lustre) 2013-09-05 19:59:34 +02:00
ioremap.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
Makefile MIPS: Move generated code to .text for microMIPS 2013-07-01 15:10:56 +02:00
mmap.c mm: remove free_area_cache 2013-07-10 18:11:34 -07:00
page-funcs.S MIPS: Refactor 'clear_page' and 'copy_page' functions. 2012-07-19 11:23:43 +02:00
page.c MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
pgtable-32.c MIPS: Limit fixrange_init() to the FIXMAP region 2011-07-25 17:26:54 +01:00
pgtable-64.c MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sc-ip22.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
sc-mips.c MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
sc-r5k.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
sc-rm7k.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
tlb-funcs.S MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT 2013-10-29 21:24:51 +01:00
tlb-r3k.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
tlb-r4k.c MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
tlb-r8k.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
tlbex-fault.S MIPS: Don't include <asm/page.h> unnecessarily. 2012-12-28 17:04:04 +01:00
tlbex.c MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT 2013-10-29 21:24:51 +01:00
uasm-micromips.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
uasm-mips.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
uasm.c MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00