Commit Graph

8745 Commits

Author SHA1 Message Date
Nakul Saraiya
f297e4e5e4 [PATCH] Increase nodemap hash.
Needed for some newer Opteron systems with E stepping and memory
relocation enabled. The node addresses are different in lower
bits now so the nodemap hash function needs to be enlarged.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Jim Paradis
fb048927ad [PATCH] x86-64: Fix off by one in pfn_valid
When I gave proposed the fix to pfn_valid() for RHEL4, Stephen Tweedie's
sharp eyes caught this:

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:50:55 -07:00
Andi Kleen
6e44f12ba6 [PATCH] i386: add memory clobbers to syscall macros
As noted by matz@suse.de

The problem is, that on i386 the syscallN
macro is defined like so:

  long __res; \
  __asm__ volatile ("int $0x80" \
        : "=a" (__res) \
        : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
          "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \

If one of the arguments (in the _llseek syscall it's the arg4) is a pointer
which the syscall is expected to write to (to the memory pointed to by this
ptr), then this side-effect is not captured in the asm.

If anyone uses this macro to define it's own version of the syscall
(sometimes necessary when not using glibc) and it's inlined, then GCC
doesn't know that this asm write to "*dest", when called like so for instance:

  out = 1;
  llseek (fd, bla, blubb, &out, trara)
  use (out);

Here nobody tells GCC that "out" actually is written to (just a pointer to it
is passed to the asm).  Hence GCC might (and in the above bug did)
copy-propagate "1" into the second use of "out".

The easiest solution would be to add a "memory" clobber to the definition
of this syscall macro.  As this is a syscall, it shouldn't inhibit too many
optimizations.

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
2b4a08150e [PATCH] x86-64: Increase TLB flush array size
The generic TLB flush functions kept upto 506 pages per
CPU to avoid too frequent IPIs.

This value was done for the L1 cache of older x86 CPUs,
but with modern CPUs it does not make much sense anymore.
TLB flushing is slow enough that using the L2 cache is fine.

This patch increases the flush array on x86-64 to cache
5350 pages. That is roughly 20MB with 4K pages. It speeds
up large munmaps in multithreaded processes on SMP considerably.

The cost is roughly 42k of memory per CPU, which is reasonable.

I only increased it on x86-64 for now, but it would probably
make sense to increase it everywhere. Embedded architectures
with SMP may keep it smaller to save some memory per CPU.

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
165aeb8284 [PATCH] x86-64: Don't include config.h in asm/timex.h
asm-x86-64/timex.h does not reference CONFIG constants.
Do not need to include config.h.

Signed-off-by: Grant Grundler <iod00d@hp.com>
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
5d3d0f7704 [PATCH] x86-64: Reverse order of bootmem lists
This leads to bootmem allocating first from node 0 instead
of from the last node.  This avoids swiotlb allocating on the last node, which
doesn't really work on a machine with >4GB.

Note: there is a better patch around from someone else that gets
rid of the pgdat list completely.

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
6142891a0c [PATCH] x86-64: Avoid unnecessary double bouncing for swiotlb
PCI_DMA_BUS_IS_PHYS has to be zero even when the GART IOMMU is disabled
and the swiotlb is used. Otherwise the block layer does unnecessary
double bouncing.

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
b91691164b [PATCH] x86-64: Don't cache align PDA on UP builds
Suggested by someone I forgot who sorry.

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
Andi Kleen
f343bb4cd7 [PATCH] x86{-64}: Remove old hack that disabled mmconfig support on AMD systems.
Now that Greg implemented MCFG/_SEG support this shouldn't be needed
anymore

Cc: gregkh@suse.de

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 10:49:55 -07:00
Paul Jackson
b3426599af [PATCH] cpuset semaphore depth check optimize
Optimize the deadlock avoidance check on the global cpuset
semaphore cpuset_sem.  Instead of adding a depth counter to the
task struct of each task, rather just two words are enough, one
to store the depth and the other the current cpuset_sem holder.

Thanks to Nikita Danilov for the idea.

Signed-off-by: Paul Jackson <pj@sgi.com>

[ We may want to change this further, but at least it's now
  a totally internal decision to the cpusets code ]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 09:16:27 -07:00
Anton Altaparmakov
b9791184e7 Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6 2005-09-12 09:05:41 -07:00
Evgeniy Polyakov
f24ec7f6c6 [PATCH] crc16: remove w1 specific comments.
Remove w1 comments from crc16.h and move specific constants into
w1_ds2433.c where they are used.

Replace %d with %zd.

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 08:48:08 -07:00
Linus Torvalds
26cda988ba Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6 2005-09-12 08:33:53 -07:00
Anton Altaparmakov
c324229138 Merge branch 'master' of imp.csi.cam.ac.uk:/home/src/ntfs-2.6.git/ 2005-09-12 08:25:52 -07:00
Linus Torvalds
1df5c10a5b Mark ia64-specific MCA/INIT scheduler hooks as dangerous
..and only enable them for ia64. The functions are only valid
when the whole system has been totally stopped and no scheduler
activity is ongoing on any CPU, and interrupts are globally
disabled.

In other words, they aren't useful for anything else. So make
sure that nobody can use them by mistake.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-12 07:59:21 -07:00