The patch to move the current pointer for init_task from region 7 to
region 5 inadvertendly caused ar.k4 (CURRENT_STACK) to be initialized
improperly for the bootstrap processor.  Fix this by initializing it
to -1.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

The code allocated all 96 stacked registers, for no apparent reason.

Also, fix ia64_pal_call_static() to switch RSE to enforced-lazy, LE
mode before the PAL-call.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Change ia64_switch_mode_phys() and ia64_switch_mode_virt() to preserve
the virtual sp/bsp and update the call-sites accordingly.  This avoids
problems with the init_task pointer which lives in region 5 now.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Gcc 3.4 has a new DFA scheduler for ia64. Unfortunately, it is not
well tested for Itanium 1. When I tried to use gcc 3.4 to compile
2.6 kernel configured for Merced, gcc failed in many places:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15598
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15653
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15655
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16130
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16142
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16143

Some of them have been fixed. But I am afraid many more remain. I don't
know how many Itanium 1 machines left in production use. If people want
to optimize kernel for Itanium 1, they can stick with the older gccs.
Or they should upgrade their machines. I think the gcc developer's time
should be better spent on somewhere else. I have been using this patch
for a while, kernel seems to work OK.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Define cpu_logical_id() even when !SMP.  I added uses of this in some
iosapic printk's, which broke the UP build.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

call_pernode_memory() is rounding memory regions to page boundaries,
but in the non-NUMA case, it's incorrectly passing the rounded start and
the original length.  Any reserved memory regions sitting beyond a
memory region that isn't nicely aligned is potentially at risk for
getting freed and trashed.  This is a fairly nasty bug that can bite in
very hard to find ways.  In my case, the EFI memory map was getting
overwritten, causing the ACPI methods to access chipset registers
cachable instead of uncachable.  It could potentially be causing some of
the random hangs and strange behavior we're seeing lately.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

This update fixes the FAT default NLS options and trims some others.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Introduce iosapic_{read,write,eoi} to hide the IOSAPIC REG_SELECT
stuff.  i386 and x86_64 already do this for io_apic_{read,write}.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Altix needs to use 16MB granules to prevent attribute aliasing in low
memory space.  This patch makes the kernel configuration system
enforce that requirement.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

The attached patch contains some cleanups to the bte code and introduces
the ability to excercise bte interfaces on other nodes.  This is an SGI
Altix specific piece of hardware.

Signed-off by: Robin Holt
Signed-off by: Jesse Barnes
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Allow consoles to register early if they're capable of early output.
If one of them registers successfully, set CPU 0 online so that
printk() will actually call the console drivers.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

In base kernel 2.6.7, there is bug in function hugetlb_prefault().  The
call to free_huge_page() is incorrect and should be replaced with a call
to page_cache_release().
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

This patch moves the pfm_ovfl_arg_t structure from the kernel stack
into the pfm_context_t structure. This minimizes kernel stack space
consumption.
Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

This patch moves move_irq() from ioaspic.c to irq.c to make this common
for ia64 subarches.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

- Handle the overlapping mmaps in the MAP_FIXED case
- Handle unmaps correctly i.e. call __ia32_delete_pp_range()
- There are now three clear entry points into the pp manipulation code
        - ia32_set_pp
        - ia32_unset_pp
        - ia32_compare_pp
- Rename internal functions to __ia32_*pp_*
- Grab mmap_sem just once at the main entry point
Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

A couple of months ago Hidetoshi Seto from Fujitsu proposed
a patch to provide similar switching between interrupt mode
and polling mode for corrected platform events (CPE) as we
have for processor events (CMC) [with the obvious difference
that not all platforms support an interrupt for CPE].

I dusted it off and made a couple of very minor cleanups (which
Seto-san checked out last night on his test setup and confirmed
still passes).
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

Without this fix, you'll get unresolved references to
sys_rt_sigaction().

into tiger.hpl.hp.com:/data1/bk/lia64/to-linus-2.5

Small patch to update the sn2_defconfig file.  I just did a 'make oldconfig' 
with the current sn2_defconfig and removed 8250 support.
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

The SN prom supports fine grained error handling features, the OS needs
to tell the prom if the OS expects to use these platform specific
features.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>

into kernel.bkbits.net:/home/davem/sparc-2.6

I noticed that insert_resource() incorrectly handles the case of an
existing parent resource with the same ending address as a newly added
child.  This results in incorrect nesting, like the following:

	# cat /proc/ioports
	<snip>
	002f0000-002fffff : PCI Bus #48
	  00200000-002fffff : /pci@800000020000003
	</snip>
Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Make sure that number of sectors != 0 for in/out command before sending
it to drive.  Remove no longer needed checks from flagged_* PIO handlers.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

PIO handlers under CONFIG_IDE_TASKFILE_IO=n are never used for bio
based requests (rq->bio is always NULL) so we can use rq->buffer
directly instead of calling ide_[un]map_buffer().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- merge status checking code for rq->current_nr_sectors
  and !rq->current_nr_sectors cases
- remove !rq->bio check as it is always true
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

These handlers are nowadays used only for REQ_DRIVE_TASKFILE
requests (rq->bio is always NULL) which aren't retried et all so
remove code 'rewinding' rq->current_nr_sectors and some FIXMEs.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

If REQ_DRIVE_* request fails ide_end_drive_cmd() should be called
for it not ->end_request().  This was broken by 2.6.5, fix it.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

'cat /proc/ide/hdx/identify' generates REQ_DRIVE_TASKFILE request
(for WIN_PIDENTIFY command) even for devices controlled by ide-cd.
All other drivers don't try to retry such requests.

Acked by Jens.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

First introduced in 2.4.19/2.5.3 as ALTSTAT_SCREW_UP, never used.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- do not unregister ide-pnp driver while detaching random
  IDE device from random IDE device driver if IDE is modular
  (somebody added this in 2.3.51)
- clear 'hw_regs_t hw' allocated from stack
- mark idepnp_init() with __init
- use ide_std_init_ports() instead of ide_setup_ports()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Geert Uytterhoeven <geert@linux-m68k.org>

The IDE sparse fixups cause 2 warnings (unused variables `val' and
`reg') on m68k and APUS.  However, the reason why this code was
commented out is gone.  So just remove the special case.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

They are only included from these drivers.

While at it:
- remove redundant ide_pci_device_t tables
- add DECLARE_CS_DEV() (cs5520)
- remove duplicate DISPLAY_SC1200_TIMINGS define (sc1200)
- remove unused SIIMAGE_BUFFERED_TASKFILE, SII_DEBUG
  and siiprintk() defines + add DECLARE_SII_DEV() (siimage)
- remove unused SLC90E66_DEBUG_DRIVE_INFO define (slc90e66)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Extracted from the Debian kernel package
(original patch is from Herbert Xu).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>