Commit Graph

415 Commits

Author SHA1 Message Date
Linus Torvalds bef9c55884 Merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-05-25 18:01:26 -07:00
Alexander Nyberg 4f60fdf613 [PATCH] x86_64: CONFIG_BUG=n fixes
Fixes some !CONFIG_BUG warnings:
include/asm/mmu_context.h: I funktion `switch_mm':
include/asm/mmu_context.h:57: varning: implicit declaration of function `out_of_line_bug'

Signed-off-by: Alexander Nyberg <alexn@telia.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-25 15:31:28 -07:00
David S. Miller 4b463f7858 Merge of /home/davem/src/GIT/linux-2.6/.git/ 2005-05-25 14:58:04 -07:00
Stephen Rothwell d0e8e29100 [PATCH] ppc64 iSeries: fix boot time setting
For quite a while, there has existed a hypervisor bug on legacy iSeries
which means that we do not get the boot time set in the kernel.  This
patch works around that bug.  This was most noticable when the root
partition needed to be checked at every boot as the kernel thought it
was some time in 1905 until user mode reset the time correctly.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-25 10:13:43 -07:00
Stephen Rothwell 8f80e5c911 [PATCH] ppc64: fix initialisation of gettimeofday calculations
On PPC64, we keep track of when we need to update jiffies (and the
variables used to calculate the time of day) based on the time base.

If the time base frequence is sufficiently high compared to the
processor clock frequency, then it is possible for the time of day
variables to be corrupted at the time of the first decrementer interrupt
we take.  This became obvious on a legacy iSeries where the time base
frequency is the same as the processor clock.

This one line patch fixes the initialisation so that the time of day
variables and the indicator we use to tell when updates are due are
better synchronised.

Signed-off-by:  Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-25 10:13:42 -07:00
Dominik Hackl 6431e6a28e [PATCH] voyager_smp.c static inline fix
This patch fixes a compile bug by moving a static inline function to the
right place.  The body of a static inline function has to be declared
before the use of this function.

Signed-off-by: Dominik Hackl <dominik@hackl.dhs.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-24 20:08:12 -07:00
David S. Miller 816242da37 [SPARC64]: Add boot option to force UltraSPARC-III P-Cache on.
Older UltraSPARC-III chips have a P-Cache bug that makes us disable it
by default at boot time.

However, this does hurt performance substantially, particularly with
memcpy(), and the bug is _incredibly_ obscure.  I have never seen it
triggered in practice, ever.

So provide a "-P" boot option that forces the P-Cache on.  It taints
the kernel, so if it does trigger and cause some data corruption or
OOPS, we will find out in the logs that this option was on when it
happened.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-23 15:52:08 -07:00
Benjamin Herrenschmidt f10d20c1f1 [PATCH] ppc64: Fix g5 hw timebase sync
The hardware sync of the timebase on SMP G5s uses a black magic
incantation to the i2c clock chip that was inspired from what Darwin
does.

However, this was an earlier version of Darwin that was ...  buggy !
heh.  This causes the latest models to break though when starting SMP,
so it's worth fixing.

Here's a new version of the incantation based on careful transcription
of the said incantations as found in the latest version of apple's
temple.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-23 11:51:24 -07:00
Kumar Gala e16fa6b9d2 [PATCH] ppc32: Fix an off-by-one error in ipic_init
There is an off-by-one error in the IPIC code that configures the
external interrupts (Edge or Level Sensitive).

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-23 10:58:31 -07:00
Benjamin Herrenschmidt 1263cc67c0 [PATCH] ppc64: Fix booting on latest G5 models
The latest speedbumped Apple G5 models have a "bug" in the Open Firmware
device tree that lacks the proper interrupt routing information for the
northbridge i2c controller.  Apple's driver silently falls back into a
sub-optimal "polled" mode (heh, maybe they didn't even notice the bug
because of that :), our driver didn't properly check and crashes :(

This patch fixes our driver to not crash, and adds code to the
prom_init() OF trampoline code that detects the "bug" and adds the
missing information back for this chipset revision.  This fixes booting
and thermal control on these models.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-22 17:34:42 -07:00
Andi Kleen 2df9fa3664 [PATCH] x86_64: i386/x86-64: Export cpu_core_map
Needed for the powernow k8 driver for dual core support.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: <mark.langsdorf@amd.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:21 -07:00
Andi Kleen 14d98cad82 [PATCH] x86_64: Add option to disable timer check
This works around the too fast timer seen on some ATI boards.

I don't feel confident enough about it yet to enable it by default, but give
users the option.

Patch and debugging from Christopher Allen Wing <wingc@engin.umich.edu>, with
minor tweaks (renamed the option and documented it)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:21 -07:00
Andi Kleen 607a168583 [PATCH] x86_64: Fix 32bit system call restart
The test case at
http://cvs.sourceforge.net/viewcvs.py/posixtest/posixtestsuite/conforman
ce/interfaces/clock_nanosleep/1-5.c fails if it runs as a 32bit process on
x86_86 machines.

The root cause is the sub 32bit process fails to restart the syscall after it
is interrupted by a signal.

The syscall number of sys_restart_syscall in table sys_call_table is
__NR_restart_syscall (219) while it's __NR_ia32_restart_syscall
(0) in ia32_sys_call_table. When regs->rax==(unsigned
long)-ERESTART_RESTARTBLOCK, function do_signal doesn't distinguish if
the process is 64bit or 32bit, and always sets restart syscall number
as __NR_restart_syscall (219).

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:21 -07:00
Andi Kleen 4057923614 [PATCH] i386: Fix race in iounmap
We need to hold the vmlist_lock while doing change_page_attr, otherwise we
could reset someone else's mapping.

Requires previous patch to add __remove_vm_area

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Andi Kleen 7856dfeb23 [PATCH] x86_64: Fixed guard page handling again in iounmap
Caused oopses again.  Also fix potential mismatch in checking if
change_page_attr was needed.

To do it without races I needed to change mm/vmalloc.c to export a
__remove_vm_area that does not take vmlist lock.

Noticed by Terence Ripperda and based on a patch of his.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Andi Kleen c4d1fcf3a2 [PATCH] x86_64: Don't allow accesses below register frame in ptrace
There was a "off by one quad word" error in there.  I don't think it is
exploitable because it will only store into a unused area, but better to plug
it.

Found and fixed by John Blackwood

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Andi Kleen b41e29398a [PATCH] x86_64: 386/x86-64 Further AMD dual core fixes
- Remove duplicated ifdef
- Make core_id match what Intel uses
- Initialize phys_proc_id correctly for non DC case
- Handle non power of two core numbers.

Fixes for both i386 and x86-64

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:20 -07:00
Matt Porter b2665f92ae [PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 44x
This patch fixed CONFIG_TASK_SIZE handling on 44x.  Currently head_44x.S
hardcodes 0x80000000, which breaks if user chooses to change TASK_SIZE
(e.g.  for 3G user-space).  Tested on Ocotea in 3G/1G configuration.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Kumar Gala 7f8cd80fb2 [PATCH] ppc32: Fix platform device initialization of 8250 serial ports
Initialization of 8250 serial ports that are platform devices require that
at empty entry exists in the array of plat_serial8250_port.  With out an
empty entry we can get some pretty random behavior.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Jeff Dike 84ddaa8c86 [PATCH] uml: Change printf to printk in console driver
From: Al Viro - we have error messages with KERN_ERR in them, so they
should be printk-ed rather than printf-ed.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:19 -07:00
Jeff Dike 12f49643bc [PATCH] uml: fixrange_init 3-level page table support
From: Al Viro - add three-level page table support to fixrange_init.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike 7b9014c1da [PATCH] uml: Remove ubd-mmap support
Finally rip out the ubd-mmap code, which turned out to be broken by design.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike 9b67a3c4cd [PATCH] uml: initrd cleanup
The serial UML OS-abstraction layer patch (um/kernel dir).

This moves all systemcalls from initrd_user.c file under os-Linux dir and join
initrd_user.c and initrd_kern.c files in new file initrd.c

Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike 41a9cf8ebe [PATCH] uml: Export clear_user_*
From: Oleg Drokin: This patch is needed to support kernel modules that want to
use clear_user() (that is exported symbol on all other architectures).

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:18 -07:00
Jeff Dike 7c00c31fc0 [PATCH] uml: multicast driver cleanup
Byte-swapping of the port and IP address passed in to the multicast driver by
the user used to happen in different places, which was a bug in itself.  The
port also was swapped before being printk-ed, which led to a misleading
message.  This patch moves the port swapping to the same place as the IP
address swapping.  It also cleans up the error paths of mcast_open.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Jeff Dike 060e352236 [PATCH] uml: Delay loop cleanups
This patch cleans up the delay implementations a bit, makes the loops
unoptimizable, and exports __udelay and __const_udelay.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Jeff Dike 13479d52c7 [PATCH] uml: Page fault fixes
Any access to a PROT_NONE page should segfault the process.  A JVM seems to do
this on purpose.  Also, Al noticed some bogus code, which is now deleted.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Jeff Dike ba9950c820 [PATCH] uml: small fixes left over from rc4
Some changes that I sent in didn't make 2.6.12-rc4 for some reason.  This
adds them back.  We have
	an x86_64 definition of TOP_ADDR
	a reimplementation of the x86_64 csum_partial_copy_from_user
	some syntax fixes in arch/um/kernel/ptrace.c
	removal of a CFLAGS definition in the x86_64 Makefile
	some include changes in the x86_64 ptrace.c and user-offsets.h
	a syntax fix in elf-x86_64.h
Also moved an include in the i386 and x86_64 Makefiles to make the symlinks
work, and some small fixes from Al Viro.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 15:48:17 -07:00
Linus Torvalds 1c7878f024 Remove some left-over empty files
Hopefully the addition of -E to my applypatch script
will mean that I won't have these kinds of leftovers
in the future.
2005-05-20 13:36:19 -07:00
David S. Miller a228dfd5dc [SPARC64]: Fix bad performance side effect of strbuf timeout changes.
The recent change to add a timeout to strbuf flushing had
a negative performance impact.  The udelay()'s are too long,
and they were done in the wrong order wrt. the register read
checks.  Fix both, and things are happy again.

There are more possible improvements in this area.  In fact,
PCI streaming buffer flushing seems to be part of the bottleneck
in network receive performance on my SunBlade1000 box.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-20 11:40:32 -07:00
Paul Mackerras 45fed46f5b [PATCH] ppx32: Fix uninitialized variable in set_preferred_console
This fixes an uninitialized variable warning in arch/ppc/kernel/setup.c,
and this time gcc is actually right, there is a path that could result
in offset being uninitialized.  Zero is a sane default in this instance.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:11 -07:00
Paul Mackerras 72480ef863 [PATCH] ppc32: Fix __copy_tofrom_user return value
Recently the __copy_tofrom_user routine was modified to avoid doing
prefetches past the end of the source array.  However, in doing so we
introduced a bug in that it now returns the wrong value for the number
of bytes not copied when a fault is encountered.  This fixes it to
return the correct number.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras 3207a80a6e [PATCH] ppc32: remove unused computation
We are computing phys in the code below and never using.  This patch
takes out the redundant computation.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Paul Mackerras 6c37a88c5b [PATCH] ppc32: don't call progress functions after boot
On ppc32, the platform code can supply a "progress" function that is
used to show progress through the boot.  These functions are usually
in an init section and so can't be called after the init pages are
freed.  Now that the cpu bringup code can be called after the system
is booted (for hotplug cpu) we can get the situation where the
progress function can be called after boot.  The simple fix is to set
the progress function pointer to NULL when the init pages are freed,
and that is what this patch does (note that all callers already check
whether the function pointer is NULL before trying to call it).

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-20 07:54:10 -07:00
Linus Torvalds 66e60f9251 Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6.git/ 2005-05-19 15:31:18 -07:00
Christoph Lameter ff0d2f90fd [PATCH] fix memory scribble in arch/i386/pci/fixup.c
The GET_INDEX() macro should use just the low three bits of the devfn,
otherwise we have a memory scribble in pcie_rootport_aspm_quirk that
overwrites ptype_all

Fix it to be more careful about its arguments while at it.

Acked by Dely Sy <dely.l.sy@intel.com>

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 09:27:05 -07:00
Paul Mackerras 19bbdf0e51 [PATCH] ppc32: enable use of early_param
We need to call parse_early_param() early on to allow usage of
early_param() for command line parsing.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 09:27:05 -07:00
Christoph Hellwig 5418b6925c [PATCH] kill <asm/ioctl32.h>
These days <linux/ioctl32.h> handles everything, no need for an asm
header on just two architectures.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:21 -07:00
Nishanth Aravamudan 24d568ed1b [PATCH] alpha/osf_sys: use helper functions to convert between tv and jiffies
Use helper functions to convert between timeval structure and jiffies
rather than custom logic.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:21 -07:00
Yoichi Yuasa 3407c0fec3 [PATCH] mips: add resource management to pmu
This patch had added resource management to vr41xx's pmu.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:20 -07:00
Andi Kleen 59db2e6ed0 [PATCH] x86_64: Update defconfig
Update defconfig

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:17 -07:00
Andi Kleen 18a2b64712 [PATCH] x86_64: Don't assume BSP has ID 0 in new smp bootup
This patch removes the assumption that LAPIC entries contain the BSP as its
first entry.  This is a slight improvement to the temporary fix submitted by
Suresh Siddha.

- Removes assumption that LAPIC entries contain BSP first.

- Builds x86_acpiid_to_apicid[] and bios_cpu_apicid[] properly with BSP as
  first entry.

- Made maxcpus=1 boot on these systems.  Since the parsing earlier in
  arch/x86_64/kernel/mpparse.c stopped after maxcpus entries, other entries
  were not processed, this causes kernel not to boot on these systems.

TBD: x86_acpiid_to_apicid and bios_cpu_apicid[] seem to be exactly the
     same.  This could be removed, but might need more work to cleanup.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Andi Kleen 751521149a [PATCH] x86_64: Collected NMI watchdog fixes.
Collected NMI watchdog fixes.

- Fix call of check_nmi_watchdog

- Remove earlier move of check_nmi_watchdog to later.  It does not fix the
  race it was supposed to fix fully.

- Remove unused P6 definitions

- Add support for performance counter based watchdog on P4 systems.

  This allows to run it only once per second, which saves some CPU time.
  Previously it would run at 1000Hz, which was too much.

  Code ported from i386

  Make this the default on Intel systems.

- Use check_nmi_watchdog with local APIC based nmi

- Fix race in touch_nmi_watchdog

- Fix bug that caused incorrect performance counters to be programmed in a
  few cases on K8.

- Remove useless check for local APIC

- Use local_t and per_cpu variables for per CPU data.

- Keep other CPUs busy during check_nmi_watchdog to make sure they really
  tick when in lapic mode.

- Only check CPUs that are actually online.

- Various other fixes.

- Fix fallback path when MSRs are unimplemented

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Andi Kleen f3c5f5e7ee [PATCH] x86_64: Make vsyscall.c compile without CONFIG_SYSCTL
Originally from Matt Tolentino

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Suresh Siddha 376ec33fcb [PATCH] x86_64: Fix OEM hpet check
Use bitmap_zero instead of bitmap_empty to initialise cpu mask This makes it
actually run reliable instead of relying on stack state.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:16 -07:00
Andi Kleen 3b9ba4d5e2 [PATCH] x86_64: When checking vmalloc mappings don't use pte_page
The PTEs can point to ioremap mappings too, and these are often outside
mem_map.  The NUMA hash page lookup functions cannot handle out of bounds
accesses properly.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen f6b8d4778c [PATCH] x86_64: Fix canonical checking for segment registers in ptrace
Allowed user programs to set a non canonical segment base, which would cause
oopses in the kernel later.

Credit-to: Alexander Nyberg <alexn@dsv.su.se>

 For identifying and reporting this bug.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen d1099e8a18 [PATCH] x86_64: check if ptrace RIP is canonical
This works around an AMD Erratum.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen 312df5f1a1 [PATCH] x86_64: Add pmtimer support
There are unfortunately more and more multi processor Opteron systems which
don't have HPET timer support in the southbridge.  This covers in particular
Nvidia and VIA chipsets.  They also don't guarantee that the TSCs are
synchronized between CPUs; and especially with MP powernow the systems are
nearly unusable because the time gets very inconsistent between CPUs.

The timer code for x86-64 was originally written under the assumption that we
could fall back to the HPET timer on such systems.  But this doesn't work
there.

Another alternative is to use the ACPI PM timer as primary time source.  This
patch does that.  The kernel only uses PM timer when there is no other choice
because it has some disadvantages.

Ported over from i386.  It should be faster than the i386 version because I
dropped the "read three times" workaround, but is still considerable slower
than HPET and also does not work together with vsyscalls which have to be
disabled.

Cc: <mark.langsdorf@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:15 -07:00
Andi Kleen 0af2be0b72 [PATCH] x86_64: Remove unique APIC/IO-APIC ID check
It is unnecessary on modern Intel or AMD systems, and that is all we support
on x86-64

Also causes problems on various systems

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17 07:59:14 -07:00