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f4ae17aa0f
linux/arch/mips
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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
..
alchemy MIPS: Panic messages should not end in \n. 2013-10-29 21:24:19 +01:00
ar7 MIPS: FW: Remove obsolete header file for MTI platforms. 2013-05-08 12:30:10 +02:00
ath79 MIPS: ath79: Remove ar933x_uart_platform.h header 2013-10-29 21:23:49 +01:00
bcm47xx MIPS: BCM47XX: Fix detected clock on Asus WL520GC and WL520GU 2013-10-29 21:24:09 +01:00
bcm63xx MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
boot MIPS: ZBOOT: Support LZ4 compression scheme 2013-10-29 21:24:34 +01:00
cavium-octeon MIPS: Panic messages should not end in \n. 2013-10-29 21:24:19 +01:00
cobalt MIPS: Cobalt: Move to 8250/16550 serial early printk driver 2013-10-29 21:24:38 +01:00
configs MIPS: Lantiq: Add defconfig for xway SoC 2013-09-03 23:22:16 +02:00
dec DEC: Whitespace cleanup 2013-10-29 21:24:44 +01:00
emma MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
fw MIPS: sibyte: Declare the cfe_write() buffer as constant 2013-06-21 18:07:02 +02:00
include MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT 2013-10-29 21:24:51 +01:00
jazz Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
jz4740 MIPS: jz4740: Correct clock gate bit for DMA controller 2013-07-05 11:40:53 +05:30
kernel MIPS: Tell R4k SC and MC variations apart 2013-10-29 21:24:48 +01:00
kvm Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-09-04 18:15:06 -07:00
lantiq MIPS: Panic messages should not end in \n. 2013-10-29 21:24:19 +01:00
lasat MIPS: Refactor load/entry address calculations 2013-09-03 17:58:37 +02:00
lib MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
loongson MIPS: Loongson: Hide the pci code behind CONFIG_PCI 2013-09-03 15:27:39 +02:00
loongson1 MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
math-emu MIPS: Remove unreachable break statements from cp1emu.c 2013-08-26 15:33:40 +02:00
mm MIPS: mm: Use scratch for PGD when !CONFIG_MIPS_PGD_C0_CONTEXT 2013-10-29 21:24:51 +01:00
mti-malta MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
mti-sead3 MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
netlogic MIPS: Panic messages should not end in \n. 2013-10-29 21:24:19 +01:00
oprofile MIPS: Optimize current_cpu_type() for better code. 2013-09-17 18:50:53 +02:00
pci MIPS: of/pci: Use of_pci_range_parser 2013-10-29 21:24:11 +01:00
pmcs-msp71xx MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
pnx833x MIPS: PNX833x: PNX8335_PCI_ETHERNET_INT depends on CONFIG_SOC_PNX8335 2013-08-05 13:34:22 +02:00
power MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
powertv MIPS: powertv: Drop BOOTLOADER_DRIVER Kconfig symbol 2013-09-03 16:48:37 +02:00
ralink MIPS: Panic messages should not end in \n. 2013-10-29 21:24:19 +01:00
rb532 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip22 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip27 MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
sgi-ip32 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sibyte MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
sni MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
txx9 MIPS: TXx9: Fix build error if CONFIG_TOSHIBA_JMR3927 is not selected 2013-09-03 15:30:50 +02:00
vr41xx MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
Kbuild KVM/MIPS32: Infrastructure/build files. 2013-05-08 03:55:34 +02:00
Kbuild.platforms MIPS: Delete Wind River ppmc eval board support. 2013-07-01 15:10:53 +02:00
Kconfig MIPS: Cobalt: Move to 8250/16550 serial early printk driver 2013-10-29 21:24:38 +01:00
Kconfig.debug MIPS: Add 8250/16550 serial early printk driver 2013-10-29 21:24:36 +01:00
Makefile MIPS: Kbuild: Do not allow building vmlinuz when !ZBOOT 2013-10-29 21:24:26 +01:00