Commit Graph

2223 Commits

Author SHA1 Message Date
David S. Miller 1ac4f5ebaa [SPARC64]: Remove ktlb.S instruction patching.
This was kind of ugly, and actually buggy.  The bug was that
we didn't handle a machine with memory starting > 4GB.  If
the 'prompmd' was allocated in physical memory > 4GB we'd
croak because the obp_iaddr_patch and obp_daddr_patch things
only supported a 32-bit physical address.

So fix this by just loading the appropriate values from two
variables in the kernel image, which is locked into the TLB
and thus accesses to them can't cause a recursive TLB miss.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-21 21:49:32 -07:00
David S. Miller 059deb693e [SPARC64]: Kill SZ_BITS define from dtlb_backend.S
This is just a replica of the existing _PAGE_SZBITS,
and thus unnecessary.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-21 19:23:48 -07:00
David S. Miller 2a7e299034 [SPARC64]: Move kernel TLB miss handling into a seperate file.
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-21 18:50:51 -07:00
Paolo 'Blaisorblade' Giarrusso efb0372bba [PATCH] uml: fix compile warning after consolidation patch
The header declaring this function wasn't included, so the function declaration
was totally bogus wrt. the proto - even if this wasn't going to fail at all.

It was so bad that the compile warning I got was "control reaches end of
non-void function", i.e. missing return. Actually, this has been there for ages,
the consolidation patch just added the warning which was needed to clean it up.
Nice. Really.

Cc: Allan Graves <allan.graves@gmail.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:30 -07:00
Paolo 'Blaisorblade' Giarrusso a46c904764 [PATCH] uml: comment about cast build fix
Explain why the casting we do to silence this warning is indeed safe.

It is because the field we're casting from, though being 64-bit wide, was filled
with a pointer in first place by ourselves.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:30 -07:00
Paolo 'Blaisorblade' Giarrusso ae756df8dd [PATCH] uml: readd removed unistd.h inclusion
Readd this header (deleted in 60d339f6fe). A
warning is spit out here about undeclared getpgrp().

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:30 -07:00
Paolo 'Blaisorblade' Giarrusso 41c79dc382 [PATCH] uml: fix bogus HOST_ELF_CLASS symbol name
Even if with a bit of misunderstanding, Al fixed this in commit
95608261da.

Well, the symbol was intended to come from userspace (it exists there on normal
host), but since some hosts may miss that, using the kernel one is just as fine.
However, rename it to be named consistently with the rest.

Actually, he missed converting ELFCLASS32 to coming from kernel headers. For
consistence, add ELFCLASS64 too.

Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:30 -07:00
Paolo 'Blaisorblade' Giarrusso fd74810478 [PATCH] uml: Fix conflict between libc and ipv6
gcc is now complaining during link on some hosts - fix it as for other things.
Reported by Antoine Martin <antoine@nagafix.co.uk>.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:30 -07:00
Paolo 'Blaisorblade' Giarrusso 8e5cb35a60 [PATCH] uml: fix uname output on 32-bit binary on 64-bit host
Translate uname output taken from the host if needed.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:30 -07:00
Paolo 'Blaisorblade' Giarrusso 36decba90b [PATCH] uml: fix modify_ldt - missing break in switch
I am a lamer :-(. Luckily, Luo Xin performed LTP testing and found this failure.
Btw, the fact that the patch in which I introduced this was merged shows that:

a) I'm really trusted by people
b) sometimes they're wrong about point a).
c) lack of time for reviewers.

CC: Luo Xin <luothing@sina.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:29 -07:00
Paolo 'Blaisorblade' Giarrusso 76629ac154 [PATCH] uml: remove verify_area_{tt,skas}
When removing verify_area, verify_area_{tt,skas} were forgotten.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 16:16:29 -07:00
Linus Torvalds f62378fcfc Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-09-21 14:30:37 -07:00
Catalin Marinas 6a1ced59b3 [ARM] 2932/1: Avoid the "noreturn" warning in arch/arm/kernel/traps.c
Patch from Catalin Marinas

This patch prevents the "noreturn function does return" warning in the
__bug() function in arch/arm/kernel/traps.c

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-21 22:14:05 +01:00
Randy Dunlap 89d7cbf73e [PATCH] update URL for HPET spec.
Correct URL for HPET spec.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 10:12:18 -07:00
Benjamin Herrenschmidt 40da47e115 [PATCH] ppc64: Build zImage.vmode for G5
zImage.vmode was recently added.  It's a version of zImage in which the ELF
note section used by open firmware indicates that it requires a virtual
mode instance of OF instead of real mode.  This allows it to work with
Apple OF, and thus is directly bootable (or netbootable) from OF command
line.  (Unfortunately, pSeries OF sort-of requires real mode and Apple OF
sort-of requires virtual mode, and both tend to be unhappy if no notes
section specifies the mode at all).

However, we forgot to add zImage.vmode to the default G5 build. This
fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 10:11:54 -07:00
Anton Blanchard 1bc2a3bb86 [PATCH] ppc64: Fix issue with non zero boot cpu
The new version of the flattened device tree passes the boot cpuid in the
header instead of via a linux,boot-cpu property.

We need to update the in kernel OF parsing code to do this, otherwise
machines with a non zero boot cpuid fail to come up.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 10:11:54 -07:00
Olof Johansson 3c2822ccb1 [PATCH] PPC64: Fix boot for some pre-POWER4 systems
Some RS64 systems (such as F80) have non-python host bridges with EADS.
However, they have two EADS with 4 buses each under them, so the old logic
that assumed no more than 7 busses per PHB failed miserably.

Big thanks to Olaf Hering for helping me test this, he's got one of the few
machines that broke from the previous logic.

Also, to be a bit smarter at detecting the need for a PHB-level IOMMU table
by checking for the presence of an ISA bus.  Only PHBs with ISA bridges
should need the PHB-level table.

Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 10:11:54 -07:00
Paul Mackerras d79e743e9f [PATCH] ppc64: Fix PCI flags when using OF device tree
My code to set up the PCI tree from the Open Firmware device tree was
setting IORESOURCE_* flags on the resources for the devices, but not
the PCI_BASE_ADDRESS_* flags.  This meant that some drivers
misbehaved, and /proc/pci showed the wrong types for the resources.
This fixes it.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-21 09:15:34 -07:00
David S. Miller 729b4f7de6 [SPARC64]: Verify vmalloc TLB misses more strictly.
Arrange the modules, OBP, and vmalloc areas such that a range
verification can be done quite minimally.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-20 12:18:38 -07:00
Russell King 840ff6a4f6 [ARM] Prevent deadlock in page fault handler
As per x86, we may deadlock while trying to get the mmap semaphore.
Implement the same fix, which allows (eg) recursive faults to cause
an oops instead of deadlocking.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 17:52:13 +01:00
Ben Dooks 5fe10ab190 [ARM] 2928/1: S3C2410 - make machine init code static
Patch from Ben Dooks

This code is not being exported, declare it static

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 17:24:33 +01:00
Ben Dooks 9d0fd1eb8a [ARM] 2927/1: .arch.info - postfix section with .init for `make buildcheck`
Patch from Ben Dooks

The `make buildcheck` is erroneously reporting that the .arch.info
list is referencing items in the .init section as it is not itself
postfixed with .init

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 16:45:20 +01:00
Ben Dooks 02b7dd1244 [ARM] 2926/1: .proc.info - postfix section with .init for `make buildcheck`
Patch from Ben Dooks

The `make buildcheck` is erroneously reporting that the .proc.info
list is referencing items in the .init section as it is not itself
postfixed with .init

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 16:35:03 +01:00
Ben Dooks bfe6815e04 [ARM] 2925/3: earlyparam - postfix section with .init for `make buildcheck`
Patch from Ben Dooks

The `make buildcheck` is erroneously reporting that the earlyparam
list is referencing items in the .init section as it is not itself
postfixed with .init
Also, as per rmk's suggestion, rename the __early_param to
.early_param to bring it into line with everything else

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 16:25:12 +01:00
Vincent Sanders 58dd48a657 [ARM] 2922/1: compile fix for shark
Patch from Vincent Sanders

Shark platform fails to build with gcc 4 because of a bad lvalue assignement

Signed-off-by: Vincent Sanders <vince@arm.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 16:21:42 +01:00
Ben Dooks 9506057fca [ARM] 2924/3: taglist - postfix section with .init for `make buildcheck`
Patch from Ben Dooks

The `make buildcheck` is erroneously reporting that the taglist
is referencing items in the .init section as it is not itself
postfixed with .init

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20 16:20:49 +01:00
David S. Miller 6a9b490d5f [SPARC64]: Move DCACHE_ALIASING_POSSIBLE define to asm/page.h
This showed that arch/sparc64/kernel/ptrace.c was not getting
the define properly, and thus the code protected by this ifdef
was never actually compiled before.  So fix that too.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-19 20:11:57 -07:00
David S. Miller ff171d8f66 [SPARC64]: Handle little-endian unaligned loads/stores correctly.
Because we use byte loads/stores to cons up the value
in and out of registers, we can't expect the ASI endianness
setting to take care of this for us.  So do it by hand.

This case is triggered by drivers/block/aoe/aoecmd.c in the
ataid_complete() function where it goes:

		/* word 100: number lba48 sectors */
		ssize = le64_to_cpup((__le64 *) &id[100<<1]);

This &id[100<<1] address is 4 byte, rather than 8 byte aligned,
thus triggering the unaligned exception.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-19 19:56:06 -07:00
Ivan Kokshaysky 997a51ae37 [PATCH] Alpha: ISA IRQs fixup for dp264
Basically, this extends original dp264 fixup to all dp264 variations.
Here is one minor change: mask out bits 4-7 of a value assigned by SRM,
because
- newer consoles report ISA IRQs with offset 0xe0;
- even if console IRQ value is bogus, we'll have a value < 16
  so it should be harmless as it won't clash with native IRQs.

Particularly this fixes USB interrupt problem on xp1000 and es40.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-19 10:00:59 -07:00
Russell King 118ec0b3e0 [ARM] Fix warning in arch/arm/mach-sa1100/generic.c
Fix:

arch/arm/mach-sa1100/generic.c:224: warning: 'struct mcp_plat_data' declared inside parameter list

caused by mussing structure and function declaration.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-18 22:16:41 +01:00
Russell King 63150fcf73 [ARM] Fix warning in arch/arm/kernel/semaphore.c
Newer binutils complains:
/tmp/cc07pbI9.s:146: Warning: ignoring changed section type for .sched.text

Fix this warning by adding %progbits to the .section.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-18 21:49:29 +01:00
Deepak Saxena e0a200894e [ARM] 2917/1: Make IXP4xx mach_desc's depend on config options
Patch from Deepak Saxena

Building a kernel for IXDP425 currently includes the machine descriptors
for IXDP465 and PRPMC1100 even if those machines are not configured.
This means we can build a kernel that boots on those machines even
though the machine_is_xxx() macro will always return 0 and other bits
such as PCI won't be compiled in. This can lead to many wasted hours
wondering what you have done to your kernel to make it randomly crash
thus requireing large quantities of beer to be consumed. While I am
all for consumption of large quantities of beer, there are better
reasons to do so then stupid kernel bugs.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-18 21:11:56 +01:00
Linus Torvalds bc5e8fdfc6 x86-64/smp: fix random SIGSEGV issues
They seem to have been due to AMD errata 63/122; the fix is to disable
TLB flush filtering in SMP configurations.

Confirmed to fix the problem by Andrew Walrond <andrew@walrond.org>

[ Let's see if we'll have a better fix eventually, this is the Q&D
  "let's get this fixed and out there" version ]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 15:41:04 -07:00
Dipankar Sarma 4fb3a53860 [PATCH] files: fix preemption issues
With the new fdtable locking rules, you have to protect fdtable with either
->file_lock or rcu_read_lock/unlock().  There are some places where we
aren't doing either.  This patch fixes those places.

Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:02 -07:00
Jeff Dike 3013449243 [PATCH] uml: UML/i386 cmpxchg fix
Using native cmpxchg offers a slight performance improvement in uml/i386.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:01 -07:00
Vitaly Bordug 514ccd4e6c [PATCH] ppc32: Add ppc_sys descriptions for PowerQUICC I devices
Added ppc_sys device and system definitions for PowerQUICC I devices.  This
will allow drivers for PQI to be proper platform device drivers.  Currently
sys section contains only MPC885 and MPC866.  Identification should be done
with identify_ppc_sys_by_name call, with board-specific "name" string
passed, since PQI do not have any register that could identify the SOC.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:01 -07:00
Anton Blanchard 8a70ce8a4b [PATCH] ppc64: build fix
I forgot to include siginfo.h when I added data breakpoint support.  We
must include it in a round-a-bout way in mainline.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:01 -07:00
Andrew Morton b9491ac835 [PATCH] x86_64: e820.c needs module.h
For EXPORT_SYMBOL.

Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Richard Purdie e36d394deb [PATCH] Fix up some pm_message_t types
Fix up some pm_message_t types

Signed-Off-By: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike 1f87b1e6e6 [PATCH] uml: remove include of asm/elf.h
asm/elf.h is bad on x86_64, and i386 doesn't need it any more after Al's
cleanup.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike 2867ace675 [PATCH] uml: return a real error code
do_aio used to return -1 on error instead of errno.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike 114069f738 [PATCH] uml: merge mem_user.c and mem.c
The serial UML OS-abstraction layer patch (um/kernel dir).

This joins mem_user.c and mem.c files.

Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike 0f80bc85c5 [PATCH] uml: move libc code out of mem_user.c and tempfile.c
The serial UML OS-abstraction layer patch (um/kernel dir).

This moves all system calls from mem_user.c and tempfile.c files under
os-Linux dir.

Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike b4fd310e16 [PATCH] uml: preserve errno in error paths
The poster child for this patch is the third tuntap_user hunk.  When an ioctl
fails, it properly closes the opened file descriptor and returns.  However,
the close resets errno to 0, and the 'return errno' that follows returns 0
rather than the value that ioctl set.  This caused the caller to believe that
the device open succeeded and had opened file descriptor 0, which caused no
end of interesting behavior.

The rest of this patch is a pass through the UML sources looking for places
where errno could be reset before being passed back out.  A common culprit is
printk, which could call write, being called before errno is returned.

In some cases, where the code ends up being much smaller, I just deleted the
printk.

There was another case where a caller of run_helper looked at errno after a
failure, rather than the return value of run_helper, which was the errno value
that it wanted.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike 64b7673f91 [PATCH] uml: Remove some build warnings
These ugly double-casts are the result of gdb complaining about size

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike d9f0d91510 [PATCH] uml: Remove a useless include
linux/inet.h isn't needed, and on my system, is empty.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:50:00 -07:00
Jeff Dike edcc2205d3 [PATCH] uml: Remove an unused file
This removes a file which is no longer used.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:59 -07:00
Jeff Dike 3eddddcf23 [PATCH] uml: breakpoint an arbitrary thread
This patch implements a stack trace for a thread, not unlike sysrq-t does.
The advantage to this is that a break point can be placed on showreqs, so that
upon showing the stack, you jump immediately into the debugger.  While sysrq-t
does the same thing, sysrq-t shows *all* threads stacks.  It also doesn't work
right now.  In the future, I thought it might be acceptable to make this show
all pids stacks, but perhaps leaving well enough alone and just using sysrq-t
would be okay.  For now, upon receiving the stack command, UML switches
context to that thread, dumps its registers, and then switches context back to
the original thread.  Since UML compacts all threads into one of 4 host
threads, this sort of mechanism could be expanded in the future to include
other debugging helpers that sysrq does not cover.

Note by jdike - The main benefit to this is that it brings an arbitrary thread
back into context, where it can be examined by gdb.  The fact that it dumps it
stack is secondary.  This provides the capability to examine a sleeping
thread, which has existed in tt mode, but not in skas mode until now.

Also, the other threads, that sysrq doesn't cover, can be gdb-ed directly
anyway.

Signed-off-by: Allan Graves<allan.graves@gmail.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:59 -07:00
Jeff Dike f6e34c6af6 [PATCH] uml: _switch_to code consolidation
This patch moves code that is in both switch_to_tt and switch_to_skas to the
top level _switch_to function, keeping us from duplicating code.  It is
required for the stack trace patch to work properly.

Signed-off-by: Allan Graves <allan.graves@gmail.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:59 -07:00
Peter Oberparleiter 6add9f7f52 [PATCH] s390: kernel stack corruption
When an asynchronous interruption occurs during the execution of the
'critical section' within the generic interruption handling code (entry.S),
a faulty check for a userspace PSW may result in a corrupted kernel stack
pointer which subsequently triggers a stack overflow check.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:59 -07:00
Domen Puncer fa72e26a64 [PATCH] Remove arch/arm26/boot/compressed/hw-bse.c
Remove nowhere referenced file (egrep "hw-bse\." didn't find anything).

Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:59 -07:00
Volker Sameske c782268be8 [PATCH] s390: diag 0x308 reipl
Add code to support the re-IPL method using diagnose 0x308.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:59 -07:00
Heiko Carstens b7ae9dd80a [PATCH] s390: show_cpuinfo fix
Disable preemption in show_cpuinfo to avoid problems and the warning about
smp_processor_id.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:58 -07:00
Martin Schwidefsky 1306a2b2be [PATCH] s390: default configuration
Update default configuration of s390.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-17 11:49:58 -07:00
Linus Torvalds 0d0fc3a2d6 Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6 2005-09-16 11:54:13 -07:00
Hidetoshi Seto 20305e5972 [IA64] mca_drv cleanup
There were some trailing white spaces, long lines, brackets in
weird style etc.  This patch cleans them up.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-09-16 10:39:40 -07:00
Linus Torvalds 03e6b495cc Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-09-16 10:39:24 -07:00
Peter Chubb 24b8e0cc09 [IA64] Remove warnings for gcc 4.0 IA64 compilation.
This patch removes some compilation warnings, mostly
trivially. acpi.c fix also noted by Kenji Kaneshige.

Signed-off-by; Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-09-16 09:45:27 -07:00
Jimi Xenidis be201f7f4c [PATCH] ppc64: Fix recent regression
As noted by Olof Johansson <olof@lixom.net>:

  "A recent patch changed the way the LPAR bit is checked during early
   boot.  This resulted in a polarity change in a conditional branch
   without changing the branch, causing at least some legacy machines to
   not boot."

This fixes it.

Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-15 08:04:39 -07:00
Richard Purdie 13b9d47ed3 [ARM] 2914/1: PXA Poodle: Add MMC and UDC support
Patch from Richard Purdie

This patch adds MMC and UDC support to the PXA Poodle platform.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 14:53:22 +01:00
Richard Purdie f29d245549 [ARM] 2913/1: PXA Poodle: Cleanup some unneeded code
Patch from Richard Purdie

This patch cleans up the PXA Poodle platform code removing an unneeded
static iomap. It also corrects errors in the platform header file and
adds a missing GPIO define.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 14:53:22 +01:00
Richard Purdie fdce05bbfe [ARM] 2912/1: PXA Corgi: Cleanup some unneeded code
Patch from Richard Purdie

This patch cleans up the PXA Corgi platform code removing an unneeded
static iomap, an unneeded function and some debug messages.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 14:53:21 +01:00
Richard Purdie c071760224 [ARM] 2915/1: SA1100 Collie: Correct scoop device calls
Patch from Richard Purdie

This patch adds a missing parameter to the scoop calls made by collie.c

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 14:52:00 +01:00
Lennert Buytenhek b2b8c69445 [ARM] 2905/1: enable the ixp2000 i2c bus driver in ixp2000 defconfigs
Patch from Lennert Buytenhek

It's silly to have I2C enabled in all ixp2000 defconfigs but not to
have the ixp2000 bus driver enabled in any of them.  This patch enables
CONFIG_I2C_IXP2000 for all in-tree ixp2000 boards.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 13:02:32 +01:00
Lennert Buytenhek 2e4e8bbb6e [ARM] 2904/1: update ixp2000 defconfigs to 2.6.13
Patch from Lennert Buytenhek

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 13:02:31 +01:00
David S. Miller 4db2ce0199 [LIB]: Consolidate _atomic_dec_and_lock()
Several implementations were essentialy a common piece of C code using
the cmpxchg() macro.  Put the implementation in one spot that everyone
can share, and convert sparc64 over to using this.

Alpha is the lone arch-specific implementation, which codes up a
special fast path for the common case in order to avoid GP reloading
which a pure C version would require.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-14 21:47:01 -07:00
Linus Torvalds 1619cca292 Partially revert "Fix time going twice as fast problem on ATI Xpress chipsets"
Commit 66759a01ad introduced the fix for
time ticking too fast on some boards by disabling one of the doubly
connected timer pins on ATI boards.

However, it ends up being _much_ too broad a brush, and that just makes
some other ATI boards not work at all since they now have no timer
source.

So disable the automatic ATI southbridge detection, and just rely on
people who see this problem disabling it by hand with the option
"disable_timer_pin_1" on the kernel command line.

Maybe somebody can figure out the proper tests at a later date.

Acked-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-14 15:56:27 -07:00
Linus Torvalds 38400e4271 Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6 2005-09-14 15:37:43 -07:00
Linus Torvalds 4117b61f72 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-09-14 15:19:49 -07:00
Nicolas Pitre 2cef2d552f [ARM] 2910/1: missing Lubbock audio device declaration
Patch from Nicolas Pitre

This apparently fell in the crack somewhere.  Add it back.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-14 22:42:31 +01:00
Tony Luck deb75f3c29 Pull fix-offsets-h into release branch 2005-09-14 14:14:45 -07:00
Hugh Dickins 2fd4ef85e0 [PATCH] error path in setup_arg_pages() misses vm_unacct_memory()
Pavel Emelianov and Kirill Korotaev observe that fs and arch users of
security_vm_enough_memory tend to forget to vm_unacct_memory when a
failure occurs further down (typically in setup_arg_pages variants).

These are all users of insert_vm_struct, and that reservation will only
be unaccounted on exit if the vma is marked VM_ACCOUNT: which in some
cases it is (hidden inside VM_STACK_FLAGS) and in some cases it isn't.

So x86_64 32-bit and ppc64 vDSO ELFs have been leaking memory into
Committed_AS each time they're run.  But don't add VM_ACCOUNT to them,
it's inappropriate to reserve against the very unlikely case that gdb
be used to COW a vDSO page - we ought to do something about that in
do_wp_page, but there are yet other inconsistencies to be resolved.

The safe and economical way to fix this is to let insert_vm_struct do
the security_vm_enough_memory check when it finds VM_ACCOUNT is set.

And the MIPS irix_brk has been calling security_vm_enough_memory before
calling do_brk which repeats it, doubly accounting and so also leaking.
Remove that, and all the fs and arch calls to security_vm_enough_memory:
give it a less misleading name later on.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-14 11:18:13 -07:00
Linus Torvalds b24fd48a0b Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-09-13 15:19:14 -07:00
Cal Peake 0a305d2e1b [PATCH] Even more fallout from ATI Xpress timer workaround
disable_timer_pin_1 needs IO-APIC, not just local APIC.

Signed-off-by: Cal Peake <cp@absolutedigital.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 15:07:06 -07:00
George G. Davis 34f521fd55 [ARM] 2896/1: Add sys_ipc_wrapper to pass 'fifth' argument on stack
Patch from George G. Davis

As pointed out be Matthew Klahn <MKLAHN@motorola.com>, some sys_ipc()
call options require six args, e.g. SEMTIMEDOP. This patch adds an ARM sys_ipc_wrapper to save the sys_ipc() 'fifth' arg on the stack.

Signed-off-by: George G. Davis <gdavis@mvista.com>
 arch/arm/kernel/calls.S        |    2 +-
 arch/arm/kernel/entry-common.S |    5 +++++
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-13 22:55:00 +01:00
Andi Kleen f3591fff04 [PATCH] x86_64: Export end_pfn
Fixes

> if [ -r System.map -a -x /sbin/depmod ]; then /sbin/depmod -ae -F
> System.map  2. 6.14-rc1; fi
> WARNING: /lib/modules/2.6.14-rc1/kernel/drivers/char/agp/amd64-agp.ko
> needs unknown symbol end_pfn

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 09:59:04 -07:00
Chuck Ebbert 33333373c4 [PATCH] i386: Ignore masked FPU exceptions
Masked FPU exceptions should obviously not happen in the first place,
but if they do, ignoring them seems to be the right thing to do.

Although there is no documentation available for Cyrix MII, I did find
erratum F-7 for Winchip C6, "FPU instruction may result in spurious
exception under certain conditions" which seems to indicate that this
can happen.

That would also explain the behaviour Ondrej Zary reported on the MII.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 09:59:04 -07:00
Linus Torvalds 5d54e69c68 Merge master.kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6 2005-09-13 09:47:30 -07:00
Tony Luck 82f1b07b9a [IA64] fix circular dependency on generation of asm-offsets.h
Fix?  One ugly hack is replaced by a different ugly hack.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-09-13 08:50:39 -07:00
Paul Mackerras 0160f53e42 [PATCH] ppc64: Make eeh_init function again
My patch "Separate pci bits out of struct device_node" (commit
1635317fac) had the unfortunate
side-effect that it stopped eeh_init() from working correctly.

It needs the pointers set up by find_and_init_phbs(), but it was being
called just before find_and_init_phbs().  That meant that we didn't
enable EEH (pSeries PCI error recovery) on any devices, and that meant
that on POWER5 systems, the hypervisor wouldn't let us enable memory or
I/O space access to any devices, and their drivers got somewhat
confused.

This fixes it by moving the eeh_init call after find_and_init_phbs.
Tested on a POWER5 partition.

Signed-of-by: Paul Mackerras <paulus@samba.org>
Signed-of-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:26:15 -07:00
Jan Beulich 42ac8ff2ce [PATCH] x86_64: NMI watchdog frequency calculation adjustments
Like previously done for i386, get the x86_64 watchdog tick calculation
into a state where it can also be used on CPUs with frequencies beyond
4GHz.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:33 -07:00
Tobias Klauser 6f673d83ca [PATCH] arch/i386: Replace custom macro with isdigit()
Replace the custom is_digit() macro with isdigit() from <linux/ctype.h>

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:33 -07:00
Richard Purdie 0dd28f1dd8 [PATCH] SharpSL: Add new ARM PXA machines Spitz and Borzoi with partial Akita Support
Add the platform support code for two new Sharp Zaurus Models, Spitz
(SL-C3000) and Borzoi (SL-C3100).

This patch also adds most of the foundations for Akita (SL-C1000) Support.
The missing link for Akita is the driver for its I2C io expander.  Once this
has been finished, the missing Kconfig option and machine declaration can
easily be added to this code.

Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:31 -07:00
Richard Purdie 1351e6e093 [PATCH] SharpSL: Abstract model specifics from Corgi Backlight driver
Separate out the Sharp Zaurus c7x0 series specific code from the Corgi
backlight driver.  Abstract model/machine specific functions to corgi_lcd.c
via sharpsl.h

This enables the driver to be used by the Zaurus cxx00 series.

Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:31 -07:00
Richard Purdie 513b6e1afa [PATCH] SharpSL: Abstract c7x0 specifics from Corgi Touchscreen driver
Separate out the Sharp Zaurus c7x0 series specific code from the Corgi
Touchscreen driver.  Use the new functions in corgi_lcd.c via sharpsl.h for
hsync handling and pass the IRQ as a platform device resource.  Move a
function prototype into the w100fb header file where it belongs.

This enables the driver to be used by the Zaurus cxx00 series.

Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:31 -07:00
Richard Purdie 9fc7896b62 [PATCH] SharpSL: Add cxx00 support to the Corgi LCD driver
The same LCD is present on both the Sharp Zaurus c7x0 series and the cxx00 but
with different framebuffer drivers (w100fb vs.  pxafb).  This patch adds
support for the cxx00 series to the LCD driver.  It also adds some LCD to
touchscreen interface logic needed by the touchscreen driver to prevent
interference problems, the idea being to keep all the ugly code in one place
leaving the drivers themselves clean.  sharpsl.h is used to provide the
abstraction.

Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:31 -07:00
Richard Purdie 50a5de4482 [PATCH] SharpSL: Abstract c7x0 specifics from Corgi SSP
Sharp's newer range of Zaurus clamshell handhelds, the cxx00's are similar to
the c7x0 series yet different.  This patch series abstracts the differences
and generates a set of common drivers that support both series of devices.  It
then adds machine support for Spitz (SL-C3000) and Borzoi (SL-C3100).  Hooks
for Akita (SL-C1000) differences are also added.  The I2C driver for its IO
expander is the only missing piece.

This patch:

Separate out the Sharp Zaurus c7x0 series specific code from corgi_ssp.c so
that other models such as the cxx00's can share it.  Create sharpsl.h which
will be used to abstract machine/model specifics.

This enables the driver to be used by the Zaurus cxx00 series.

Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:31 -07:00
Randy Dunlap 9f1583339a [PATCH] use add_taint() for setting tainted bit flags
Use the add_taint() interface for setting tainted bit flags instead of
doing it manually.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:29 -07:00
Kumar Gala 873d3469db [PATCH] ppc32: remove use of asm/segment.h
Removed ppc32 architecture specific users of asm/segment.h and
asm-ppc/segment.h itself

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:28 -07:00
Tom Rini 6a00cbfcf8 [PATCH] ppc32: discard *.exit.text and *.exit.data sections
Discard *.exit.text sections on runtime.  We cannot do this on link time
because of the way BUG macros are implemented.  If "__exit function" calls
one of those macros, __bug_table section will reference this function.
This is similar to ".altinstructions" situation on i386.

*.exit.data seems to be OK in this respect and is discarded on link
time.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13 08:22:28 -07:00
Greg Ungerer 9f5757476d [PATCH] m68knommu: startup code for the Drangen Engine 68328 based board
Specialized startup code for the 68328 based DragenEngine board.
It doesn't easily fit into the common 68x328 startup code framework.
It doesn't want any of the common hardware setup to be done here.

Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 20:04:15 -07:00
Linus Torvalds 9401c705f2 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-09-12 15:55:33 -07:00
Linus Torvalds a217e8c181 Fix fallout from ATI Xpress timer workaround
ACPI earlyquirks needs to honor the proper config variables, and include
the right header file.

(Fixes commit 66759a01ad)

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 12:32:31 -07:00
Andi Kleen 4b6a455c74 [PATCH] x86-64: Use correct mask to compute conflicting nodes in SRAT
The nodes are not set online yet at this point.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Andi Kleen 2bce2b54ae [PATCH] x86-64: reset apicid<->node tables when SRAT cannot be parsed
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Andi Kleen e58e0d0312 [PATCH] x86-64: Clean up the SRAT node list before computing the hash function
Also use for_each_node_mask instead of hand crafted loops.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Chuck Ebbert 66759a01ad [PATCH] x86-64: i386/x86-64: Fix time going twice as fast problem on ATI Xpress chipsets
Original patch from Bertro Simul

This is probably still not quite correct, but seems to be
the best solution so far.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Jan Beulich 049cdefe19 [PATCH] x86-64: reduce x86-64 bug frame by 4 bytes
As mentioned before, the size of the bug frame can be further reduced while
continuing to use instructions to encode the information.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Al Viro 9cdd304b20 [PATCH] x86-64: more gratitious linux/irq.h includes
... and with that all instances in arch/x86_64 are gone.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Chuck Ebbert ff347b2215 [PATCH] x86-64: Fix incorrect FP signals
This is the same patch that went into i386 just before 2.6.13
came out.  I still can't build 64-bit user apps, so I tested
with program (see below) in 32-bit mode on 64-bit kernel:

Before:

	$ fpsig
	handler: nr = 8, si = 0x0804bc90, vuc = 0x0804bd10
	handler: altstack is at 0x0804b000, ebp = 0x0804bc7c
	handler: si_signo = 8, si_errno = 0, si_code = 0 [unknown]
	handler: fpu cwd = 0xb40, fpu swd = 0xbaa0
	handler: i387 unmasked precision exception, rounded up

After:

	$ fpsig
	handler: nr = 8, si = 0x0804bc90, vuc = 0x0804bd10
	handler: altstack is at 0x0804b000, ebp = 0x0804bc7c
	handler: si_signo = 8, si_errno = 0, si_code = 6 [inexact result]
	handler: fpu cwd = 0xb40, fpu swd = 0xbaa0
	handler: i387 unmasked precision exception, rounded up

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Chuck Ebbert 847815760c [PATCH] x86-64: Clean up nmi error message
The x86_64 nmi code is missing a newline in one of its messages.

I added a space before the CPU id for readability and killed the trailing
space on the previous line as well.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:58 -07:00
Andi Kleen a2a0c992e9 [PATCH] x86-64: Remove unused vxtime.hz field
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:57 -07:00
Andi Kleen a0d58c9741 [PATCH] x86-64: Set the stack pointer correctly in init_thread and init_tss
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:57 -07:00
Jan Beulich 1209140c3c [PATCH] x86-64: Safe interrupts in oops_begin/end
Rather than blindly re-enabling interrupts in oops_end(), save their state
in oope_begin() and then restore that state.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:57 -07:00
Andi Kleen 059bf0f6c3 [PATCH] x86-64: Merge msr.c with i386 version
The only difference was the inline assembly, so move that into
asm/msr.h and merge with the i386 version.

This adds some missing sysfs support code to x86-64.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:57 -07:00
Al Viro 55679edb19 [PATCH] x86-64: Clean up includes in arch/x86_64/kernel/suspend.c
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:57 -07:00
Jan Beulich 7effaa882a [PATCH] x86-64: Fix CFI information
Being the foundation for reliable stack unwinding, this fixes CFI unwind
annotations in many low-level x86_64 routines, plus a config option
(available to all architectures, and also present in the previously sent
patch adding such annotations to i386 code) to enable them separatly
rather than only along with adding full debug information.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Andi Kleen b3ab838224 [PATCH] x86-64: Fix gcc 4 warnings about pointer signedness
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Andi Kleen 5bf97e0119 [PATCH] x86-64: Use physflat on Intel for < 8 CPUs with CPU hotplug
This avoids races with the APIC broadcast/mask modes.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Andi Kleen 05d1fa4bf6 [PATCH] x86-64: Improve error handling for overlapping PXMs in SRAT.
- Report PXMs instead of nodes
- Report the correct PXM, not always the one of node 1.
- Only warn for the case of a PXM overlapping by itself

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Andi Kleen 2e8ad43ec0 [PATCH] x86-64: Prevent gcc 4 from optimizing away vsyscalls
They were previously static.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Ashok Raj c1a71a1ede [PATCH] x86-64: Delivery mode should be APIC_DM_FIXED when using physical mode.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Andi Kleen 47e5701e37 [PATCH] x86-64: Remove freeing of SMP trampoline pages
Nick points out it never worked because PageReserved was
set and it might cause problems later on. Also HOTPLUG_CPU
is much more common now so let's care not too much
about the !hotplug case.

Cc: nickpiggin@yahoo.com.au

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Andi Kleen 016102dea8 [PATCH] x86-64: Fix typo CONFIG_CPU_HOTPLUG -> CONFIG_HOTPLUG_CPU in genapic.c
Noted by Ashok Raj

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:56 -07:00
Alexander Nyberg 24dead8ac9 [PATCH] Remove unnecessary BUG_ON in irq.c
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Andi Kleen e92343cc8e [PATCH] x86-64: Fix show_mem a little bit
- Add KERN_INFO to printks (from i386)
- Use longs instead of ints to accumulate pages.
- Fix broken indenting.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Andi Kleen 083044e63b [PATCH] x86-64: Remove disable_tsc code in context switch
It only offers extremly dubious security advantages and
is not worth the overhead in this critical path.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Andi Kleen fe5d5f073e [PATCH] x86-64: Print version at end of kernel build
(from i386)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Andi Kleen 48496e3495 [PATCH] x86-64: Fix (harmless) typo in head.S early level2 page table
The global bit  was not set in the first 2MB page, instead
it had a bit in the free AVL section which is useless.
Fixed thus.

Noticed by Eric Biederman

Cc:  Eric W. Biederman <ebiederm@xmission.com>

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Hugh Dickins b8f68e9ffa [PATCH] x86-64: Fix idle=poll
x86_64 idle=poll might be a little less responsive than it should: unlike
mwait_idle, and unlike i386, its poll_idle left TIF_POLLING_NRFLAG set.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Andi Kleen e99b861a3e [PATCH] x86-64: Only allocate per cpu data for possible CPUs, not compiled in CPUs.
Saves some memory except for hotplug situations.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:58 -07:00
Andi Kleen 3f74478b5f [PATCH] x86-64: Some cleanup and optimization to the processor data area.
- Remove unused irqrsp field
- Remove pda->me
- Optimize set_softirq_pending slightly

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:58 -07:00
Andi Kleen 459192c92c [PATCH] x86-64: Add simnow console
This adds console and earlyprintk support for a host file
on AMD's SimNow simulator.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:58 -07:00
Andi Kleen e5bc8b6baf [PATCH] x86-64: Make remote TLB flush more scalable
Instead of using a global spinlock to protect the state
of the remote TLB flush use a lock and state for each sending CPU.

To tell the receiver where to look for the state use 8 different
call vectors.  Each CPU uses a specific vector to trigger flushes on other
CPUs. Depending on the received vector the target CPUs look into
the right per cpu variable for the flush data.

When the system has more than 8 CPUs they are hashed to the 8 available
vectors. The limited global vector space forces us to this right now.
In future when interrupts are split into per CPU domains this could be
fixed, at the cost of needing more IPIs in flat mode.

Also some minor cleanup in the smp flush code and remove some outdated
debug code.

Requires patch to move cpu_possible_map setup earlier.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:58 -07:00
Tsuneo.Yoshioka@f-secure.com 83b942bd34 [PATCH] x86-64: Fix 32bit sendfile
If we use 64bit kernel on ia64/x86_64/s390 architecture, and we run
32bit binary on 32bit compatibility mode, sendfile system call seems be
not set offset argument.

This is because sendfile's return value is not zero but the code regards
the result by return value is zero or not.

This problem will be affect to ia64/x86_64/s390 and not affect to other
architecture does not affect other architecture (mips/parisc/ppc64/sparc64).

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 9acf23c42b [PATCH] x86-64: Include build number in oops output
Include build number in oops output

Helps me to match oopses to correct kernel.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 69e1a33f62 [PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments
Since this is shared code I had to implement it for i386 too

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 413588c7cb [PATCH] x86-64: Remove code to resume machine check state of other CPUs.
The resume code uses CPU hotplug now so at resume time
we only ever see one CPU.

Pointed out by Yu Luming.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen b9aac10ddd [PATCH] x86-64: Remove redundant max_mapnr and replace with end_pfn
The FLATMEM people added it, but there doesn't seem a good reason
because end_pfn is identical.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 0a43e4bf74 [PATCH] x86-64: Use e820_find_hole to compute reserved pages
Avoids a very dumb loop

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 7c7a3897f6 [PATCH] x86-64: Fix harmless off by one in e820 code
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 117090b5e8 [PATCH] x86-64: Micro optimization to dma_alloc_coherent node lookup
Use pcibus_to_node directly

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 1d3fbbf9fe [PATCH] x86-64: Don't trust boot_cpu_id in the mptable.
It could be wrong for kexec or other cases. Read it from
the CPU instead.

Signed-off-by: Murali <muralim@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 8c566ef5f3 [PATCH] x86-64: Add command line option to set machine check tolerance level
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:57 -07:00
Andi Kleen 673242c10d [PATCH] x86-64: Make lockless machine check record passing a bit more robust.
One machine is constantly throwing NMI watchdog timeouts in mce_log

This was one attempt to fix it.

(AK: this doesn't actually fix the bug I'm seeing unfortunately, probably
drop.  I don't like it that the reader can spin forever now waiting
for a writer)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen a54e678b8f [PATCH] x86-64: Remove redundant swiotlb=force handling
It's already handled in the main swiotlb code.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen 63f02fd7ce [PATCH] x86-64: Don't allocate aperture when swiotlb is enabled and no AGP found
No-one needs it then

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen 357e11d4cb [PATCH] x86-64: Don't assume APIC for boot processor has an APIC ID of zero
Originally from Stuart Hayes.

When setting up the APIC for the Uniprocessor kernel don't
assume the CPU has an APIC ID of zero.

This fixes boot with the UP kernel on Dell PowerEdge 6800/6850 4way systems.

Cc: Stuart.Hayes@dell.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen df0cc26b1b [PATCH] x86-64: Use SRAT data on Intel systems too.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen 3f098c2605 [PATCH] x86-64: Support dualcore and 8 socket systems in k8 fallback node parsing
In particular on systems where the local APIC space and node space
is very different from the Linux CPU number space.

Previously the older NUMA setup code directly parsing the K8
northbridge registers had some issues on 8 socket or dual core
systems. This patch fixes them.

This is mainly done by fixing some confusion between Linux
CPU numbers and local APIC ids. We now pass the local APIC IDs
to later code, which avoids mismatches.

Also add some heuristics to detect cases where the Hypertransport
nodeids and the local APIC IDs don't match, but are shifted
by a constant offset.

This is still all quite hackish, hopefully BIOS writers fill
in correct SRATs instead.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen 8675b1a454 [PATCH] x86-64: Fix the apic version that gets printed during boot
Signed-off-by: Suresh Sidda <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:56 -07:00
Andi Kleen 0b07e984fc [PATCH] x86-64: Don't assign CPU numbers in SRAT parsing
Do that later when the CPU boots. SRAT just stores the APIC<->Node
mapping node. This fixes problems on systems where the order
of SRAT entries does not match the MADT.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen f1f4e83fd9 [PATCH] x86-64: White space and comment fixes for smp_call_function_single
No functional changes

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen b4452218c4 [PATCH] x86-64: Enable interrupts during delay calibration on APs
We used to disable them to work around a bug, but that
is not needed anymore. Keeping them enabled avoids the NMI
watchdog triggering in some cases.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen 7055646348 [PATCH] x86-64: Use largest APIC number, not number of CPUs to decide on physflat mode
Handles case where BIOS gives CPUs very large APIC numbers correctly.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen 5a40b7c2ab [PATCH] x86-64: Remove code for outdated APICs
No x86-64 chipset has these APICs.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen 61c11341ed [PATCH] x86-64: Remove esr disable hack in APIC code
This was just needed for the Numasaurus, which fortunately
doesn't support x86-64 CPUs.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen eddfb4ed29 [PATCH] x86-64: Remove obsolete APIC "write around" bug workaround
No x86-64 chipset has this bug

Generated code doesn't change because it was always disabled.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen c1507eb2ee [PATCH] x86-64: Remove apic_write_around from smpboot.c
We don't do workarounds for ancient hardware bugs.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Andi Kleen affc9b8449 [PATCH] x86-64: Update defconfig
Allow diskless booting.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00