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Benjamin Herrenschmidt 64b3d0e812 powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED 
Currently, we never set _PAGE_COHERENT in the PTEs, we just OR it in
in the hash code based on some CPU feature bit.  We also manipulate
_PAGE_NO_CACHE and _PAGE_GUARDED by hand in all sorts of places.

This changes the logic so that instead, the PTE now contains
_PAGE_COHERENT for all normal RAM pages thay have I = 0 on platforms
that need it.  The hash code clears it if the feature bit is not set.

It also adds some clean accessors to setup various valid combinations
of access flags and change various bits of code to use them instead.

This should help having the PTE actually containing the bit
combinations that we really want.

I also removed _PAGE_GUARDED from _PAGE_BASE on 44x and instead
set it explicitely from the TLB miss.  I will ultimately remove it
completely as it appears that it might not be needed after all
but in the meantime, having it in the TLB miss makes things a
lot easier.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
 		2008-12-21 14:21:16 +11:00
..
accessibility
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acpi ACPI toshiba: only register rfkill if bt is enabled 2008-12-15 16:27:07 -08:00
amba
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ata pata_hpt366: no ATAPI DMA 2008-12-16 05:40:34 -05:00
atm ATM: horizon, fix hrz_probe fail path 2008-11-29 20:42:28 -08:00
auxdisplay
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base sysfs: Fix return values for sysdev_store_{ulong,int} 2008-10-29 15:03:49 -07:00
block pktcdvd: remove broken dev_t export of class devices 2008-12-10 10:03:32 -08:00
bluetooth bpa10x: free sk_buff with kfree_skb 2008-10-31 00:40:19 -07:00
cdrom Commands needing to be retried require a complete re-initialization. 2008-12-12 16:04:26 +01:00
char hvc_console: Escape magic sysrq key 2008-12-21 14:21:15 +11:00
clocksource Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus 2008-10-20 13:14:06 +02:00
connector
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cpufreq
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cpuidle regression: disable timer peek-ahead for 2.6.28 2008-11-09 16:28:42 -08:00
crypto fix talitos 2008-11-30 10:03:36 -08:00
dca [4/4] dca: fixup initialization dependency 2008-11-10 15:01:03 -08:00
dio
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dma dmaengine: struct device - replace bus_id with dev_name(), dev_set_name() 2008-11-11 13:12:33 -07:00
edac i82875p_edac: fix module remove 2008-12-01 19:55:25 -08:00
eisa
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firewire firewire: fw-ohci: fix IOMMU resource exhaustion 2008-12-10 12:45:34 +01:00
firmware trivial: dmi_scan typo 2008-11-07 08:25:43 -08:00
gpio gpiolib: extend gpio label column width in debugfs file 2008-11-19 18:49:57 -08:00
gpu drm/i915: Disable the GM965 MSI errata workaround. 2008-12-09 15:37:24 +10:00
hid HID: Apple ALU wireless keyboards are bluetooth devices 2008-11-28 15:09:26 +01:00
hwmon hwmon: applesmc: make applesmc load automatically on startup 2008-12-01 19:55:24 -08:00
i2c i2c-s3c2410: fix check for being in suspend. 2008-12-16 20:19:53 +00:00
ide [IA64] Clear up section mismatch for ioc4_ide_attach_one. 2008-12-09 10:08:48 -08:00
idle i7300_idle: Kconfig, show menu only on x86_64 2008-10-28 00:14:47 -04:00
ieee1394 ieee1394: add quirk fix for Freecom HDD 2008-12-14 01:13:13 +01:00
infiniband Merge branches 'ehca' and 'mlx4' into for-linus 2008-12-01 10:11:50 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2008-11-30 11:05:21 -08:00
isdn hysdn: fix writing outside the field on 64 bits 2008-12-03 21:01:28 -08:00
leds remove unused #include <version.h>'s 2008-11-01 09:50:12 -07:00
lguest
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macintosh powerpc/mm: Split mmu_context handling 2008-12-21 14:21:15 +11:00
mca
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md block: fix setting of max_segment_size and seg_boundary mask 2008-12-03 12:55:55 +01:00
media em28xx: remove backward compat macro added on a previous fix 2008-12-01 18:04:14 -02:00
memstick [PATCH] switch memstick 2008-10-21 07:48:33 -04:00
message drivers/message/i2o/iop.c: cleanup kerneldoc 2008-12-05 13:40:52 -08:00
mfd mfd: Correct WM8350 I2C return code usage 2008-11-16 19:58:47 +01:00
misc [IA64] Fix GRU compile error w/o CONFIG_HUGETLB_PAGE 2008-12-09 10:06:43 -08:00
mmc mmc: struct device - replace bus_id with dev_name(), dev_set_name() 2008-11-08 21:37:46 +01:00
mtd Merge git://git.infradead.org/mtd-2.6 2008-12-09 08:28:36 -08:00
net e1000e: fix double release of mutex 2008-12-11 21:28:11 -08:00
nubus
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of of/gpio: Implement of_gpio_count() 2008-12-21 14:21:14 +11:00
oprofile oprofile: fix memory ordering 2008-10-27 19:15:41 +01:00
parisc [PATCH] introduce fmode_t, do annotations 2008-10-21 07:47:06 -04:00
parport parport_serial: fix array overflow 2008-12-01 19:55:24 -08:00
pci Merge branch 'merge' into next 2008-12-16 14:38:58 +11:00
pcmcia pcmcia: blackfin: fix bug - add missing ; to MODULE macro 2008-12-15 16:27:06 -08:00
pnp drivers: remove duplicated #include 2008-11-04 08:18:19 -08:00
power Merge git://git.infradead.org/battery-2.6 2008-10-20 09:44:30 -07:00
ps3 powerpc/ps3: Replace the flip_ctl logic in ps3av and ps3fb by a mutex 2008-11-19 16:03:54 +11:00
rapidio rapidio: struct device - replace bus_id with dev_name(), dev_set_name() 2008-12-16 15:53:41 +11:00
regulator regulator: Use menuconfig in Kconfig 2008-11-09 14:49:23 +00:00
rtc rtc twl4030: rename ioctl function when RTC_INTF_DEV=n 2008-12-10 08:01:53 -08:00
s390 [SCSI] zfcp: prevent double decrement on host_busy while being busy 2008-12-01 10:18:20 -06:00
sbus Revert "of_platform_driver noise on sparce" 2008-12-01 07:55:14 -08:00
scsi Commands needing to be retried require a complete re-initialization. 2008-12-12 16:04:26 +01:00
serial Merge branch 'merge' into next 2008-12-16 14:38:58 +11:00
sh sh: maple: Do not pass SLAB_POISON to kmem_cache_create() 2008-12-16 16:40:32 +09:00
sn
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spi spi: fix spi_s3c24xx_gpio num_chipselect 2008-12-01 19:55:24 -08:00
ssb SSB: hide empty sub menu 2008-11-10 13:50:17 -08:00
staging STAGING: Move staging drivers back to staging-specific menu 2008-12-17 11:23:07 -08:00
tc
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telephony telephony: trivial: fix up email address 2008-11-11 09:30:23 -08:00
thermal
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uio saner FASYNC handling on file close 2008-11-01 09:49:46 -07:00
usb USB: pl2303: add id for Hewlett-Packard LD220-HP POS pole display 2008-12-17 10:49:15 -08:00
uwb uwb: wrong sizeof argument in mac address compare 2008-10-20 14:37:53 +01:00
video powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED 2008-12-21 14:21:16 +11:00
virtio
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w1 W1_MASTER_DS1WM should depend on HAVE_CLK 2008-11-30 10:03:36 -08:00
watchdog iTCO_wdt: fix typo when setting TCO_EN bit 2008-12-03 16:20:19 -08:00
xen xen: fix scrub_page() 2008-11-17 19:11:26 +01:00
zorro
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Kconfig regulator: Build on non-ARM platforms 2008-10-28 21:47:17 +00:00
Makefile Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb 2008-10-26 16:35:46 -07:00