Commit Graph

86778 Commits

Author SHA1 Message Date
Adrian Bunk
1826eadfc4 block/genhd.c: cleanups
This patch contains the following cleanups:
- make the needlessly global struct disk_type static
- #if 0 the unused genhd_media_change_notify()

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:28:31 +01:00
Adrian Bunk
ff88972c85 proper prototype for blk_dev_init()
This patch adds a proper prototye for blk_dev_init() in block/blk.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:28:29 +01:00
Adrian Bunk
278caf0120 block/blk-tag.c should #include "blk.h"
Every file should include the headers containing the externs for its
global functions (in this case for __blk_queue_free_tags()).

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:28:24 +01:00
Yang Shi
419c434c35 Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory
For some non-x86 systems with 4GB or upper 4GB memory,
we need increase the range of addresses that can be
used for direct DMA in 64-bit kernel.

Signed-off-by: Yang Shi <yang.shi@windriver.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:20:51 +01:00
Tejun Heo
e3790c7d42 block: separate out padding from alignment
Block layer alignment was used for two different purposes - memory
alignment and padding.  This causes problems in lower layers because
drivers which only require memory alignment ends up with adjusted
rq->data_len.  Separate out padding such that padding occurs iff
driver explicitly requests it.

Tomo: restorethe code to update bio in blk_rq_map_user
      introduced by the commit 40b01b9bbd
      according to padding alignment.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:18:17 +01:00
FUJITA Tomonori
7a85f8896f block: restore the meaning of rq->data_len to the true data length
The meaning of rq->data_len was changed to the length of an allocated
buffer from the true data length. It breaks SG_IO friends and
bsg. This patch restores the meaning of rq->data_len to the true data
length and adds rq->extra_len to store an extended length (due to
drain buffer and padding).

This patch also removes the code to update bio in blk_rq_map_user
introduced by the commit 40b01b9bbd.
The commit adjusts bio according to memory alignment
(queue_dma_alignment). However, memory alignment is NOT padding
alignment. This adjustment also breaks SG_IO friends and bsg. Padding
alignment needs to be fixed in a proper way (by a separate patch).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
2008-03-04 11:17:11 +01:00
Mike Miller
89b6e74378 resubmit: cciss: procfs updates to display info about many
volumes

This patch allows us to display information about all of the logical volumes
configured on a particular controller without stepping on memory even when
there are many volumes (128 or more) configured.
Please consider this for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:14:39 +01:00
Jens Axboe
02cf01aea5 splice: only return -EAGAIN if there's hope of more data
sys_tee() currently is a bit eager in returning -EAGAIN, it may do so
even if we don't have a chance of anymore data becoming available. So
improve the logic and only return -EAGAIN if we have an attached writer
to the input pipe.

Reported by Johann Felix Soden <johfel@gmx.de> and
Patrick McManus <mcmanus@ducksong.com>.

Tested-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:14:39 +01:00
Randy Dunlap
5d87a052c7 block: fix kernel-docbook parameters and files
kernel-doc for block/:
- add missing parameters
- fix one function's parameter list (remove blank line)
- add 2 source files to docbook for non-exported kernel-doc functions

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:14:39 +01:00
Steve French
966ea8c4b7 Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-03-04 04:22:00 +00:00
Julia Lawall
86c838b03d [PATCH] fs/ocfs2/aops.c: Correct use of ! and &
In commit e6bafba5b4, a bug was fixed that
involved converting !x & y to !(x & y).  The code below shows the same
pattern, and thus should perhaps be fixed in the same way.

This is not tested and clearly changes the semantics, so it is only
something to consider.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03 15:50:21 -08:00
Adrian Bunk
05488bbebe [2.6 patch] ocfs2: make dlm_do_assert_master() static
This patch makes the needlessly global dlm_do_assert_master() static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03 15:50:21 -08:00
Adrian Bunk
200bfae37a [2.6 patch] make ocfs2_downconvert_thread() static
This patch makes the needlessly global ocfs2_downconvert_thread()
static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03 15:50:21 -08:00
Adrian Bunk
006000566d [2.6 patch] fs/ocfs2/: possible cleanups
This patch contains the following cleanups that are now possible:
- make the following needlessly global functions static:
  - dlmglue.c:ocfs2_process_blocked_lock()
  - heartbeat.c:ocfs2_node_map_init()
- #if 0 the following unused global function plus support functions:
  - heartbeat.c:ocfs2_node_map_is_only()

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03 15:50:21 -08:00
Marcin Slusarz
0dd3256e04 [PATCH] ocfs2: le*_add_cpu conversion
replace all:
little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) +
					expression_in_cpu_byteorder);
with:
	leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder);
generated with semantic patch

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03 15:50:21 -08:00
Mark Fasheh
1044e401af ocfs2: Fix writeout in ocfs2_data_convert_worker()
Commit f1f540688e "optimized"
ocfs2_data_convert_worker() to "only do work for regular files".
Unfortunately, I left out a '!', which casued it to *skip* regular files.
This was hidden from testing until recently because the default data
journaling mode (data=ordered) doesn't exercise this code.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
2008-03-03 15:50:21 -08:00
Sunil Mushran
7ad8b3d30e ocfs2: Enable localalloc for local mounts
Commit 2fbe8d1ebe disabled localalloc
for local mounts. This caused issues as ocfs2 uses localalloc to
provide write locality. This patch enables localalloc for local mounts.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-03-03 15:50:21 -08:00
Linus Torvalds
976dde010e Merge branch 'slab-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm
* 'slab-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm:
  slub: fix possible NULL pointer dereference
  slub: Add kmalloc_large_node() to support kmalloc_node fallback
  slub: look up object from the freelist once
  slub: Fix up comments
  slub: Rearrange #ifdef CONFIG_SLUB_DEBUG in calculate_sizes()
  slub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG
  slub: Use the objsize from the kmem_cache_cpu structure
  slub: Remove useless checks in alloc_debug_processing
  slub: Remove objsize check in kmem_cache_flags()
  slub: rename slab_objects to show_slab_objects
  Revert "unique end pointer" patch
  slab: avoid double initialization & do initialization in 1 place
2008-03-03 15:00:09 -08:00
Oleg Nesterov
821c7de719 exit_notify: fix kill_orphaned_pgrp() usage with mt exit
1. exit_notify() always calls kill_orphaned_pgrp(). This is wrong, we
   should do this only when the whole process exits.

2. exit_notify() uses "current" as "ignored_task", obviously wrong.
   Use ->group_leader instead.

Test case:

	void hup(int sig)
	{
		printf("HUP received\n");
	}

	void *tfunc(void *arg)
	{
		sleep(2);
		printf("sub-thread exited\n");
		return NULL;
	}

	int main(int argc, char *argv[])
	{
		if (!fork()) {
			signal(SIGHUP, hup);
			kill(getpid(), SIGSTOP);
			exit(0);
		}

		pthread_t thr;
		pthread_create(&thr, NULL, tfunc, NULL);

		sleep(1);
		printf("main thread exited\n");
		syscall(__NR_exit, 0);

		return 0;
	}

output:

	main thread exited
	HUP received
	Hangup

With this patch the output is:

	main thread exited
	sub-thread exited
	HUP received

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 14:53:16 -08:00
Oleg Nesterov
05e83df624 will_become_orphaned_pgrp: partially fix insufficient ->exit_state check
p->exit_state != 0 doesn't mean this process is dead, it may have
sub-threads.  Change the code to use "p->exit_state && thread_group_empty(p)"
instead.

Without this patch, ^Z doesn't deliver SIGTSTP to the foreground process
if the main thread has exited.

However, the new check is not perfect either.  There is a window when
exit_notify() drops tasklist and before release_task().  Suppose that
the last (non-leader) thread exits.  This means that entire group exits,
but thread_group_empty() is not true yet.

As Eric pointed out, is_global_init() is wrong as well, but I did not
dare to do other changes.

Just for the record, has_stopped_jobs() is absolutely wrong too.  But we
can't fix it now, we should first fix SIGNAL_STOP_STOPPED issues.

Even with this patch ^Z doesn't play well with the dead main thread.
The task is stopped correctly but do_wait(WSTOPPED) won't see it.  This
is another unrelated issue, will be (hopefully) fixed separately.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 14:53:16 -08:00
Oleg Nesterov
f49ee505b1 introduce kill_orphaned_pgrp() helper
Factor out the common code in reparent_thread() and exit_notify().

No functional changes.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 14:53:16 -08:00
Samuel Thibault
5ce2087ed0 Fix default compose table initialization
Oddly enough, unsigned int c = '\300'; puts a "negative" value in c, not
0300...  This fixes the default unicode compose table by using integers
instead of character constants.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 14:53:16 -08:00
Cyrill Gorcunov
62e5c4b4d6 slub: fix possible NULL pointer dereference
This patch fix possible NULL pointer dereference if kzalloc
failed. To be able to return proper error code the function
return type is changed to ssize_t (according to callees and
sysfs definitions).

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:32 -08:00
Christoph Lameter
f619cfe1bd slub: Add kmalloc_large_node() to support kmalloc_node fallback
Slub is missing some NUMA support for large kmallocs. Provide that.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:32 -08:00
Pekka J Enberg
7693143481 slub: look up object from the freelist once
We only need to look up object from c->page->freelist once in
__slab_alloc().

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:32 -08:00
Christoph Lameter
6446faa2ff slub: Fix up comments
Provide comments and fix up various spelling / style issues.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:32 -08:00
Christoph Lameter
d8b42bf54b slub: Rearrange #ifdef CONFIG_SLUB_DEBUG in calculate_sizes()
Group SLUB_DEBUG code together to reduce the number of #ifdefs. Move some
debug checks under the #ifdef.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:31 -08:00
Christoph Lameter
ae20bfda68 slub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG
The BUG_ONs are useless since the pointer derefs will lead to
NULL deref errors anyways. Some of the checks are not necessary
if no debugging is possible.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:31 -08:00
Christoph Lameter
27d9e4e948 slub: Use the objsize from the kmem_cache_cpu structure
No need to access the kmem_cache structure. We have the same value
in kmem_cache_cpu.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:31 -08:00
Christoph Lameter
d692ef6dcd slub: Remove useless checks in alloc_debug_processing
Alloc debug processing is never called with a NULL object pointer.
No reason to check for NULL.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:31 -08:00
Christoph Lameter
e153362a50 slub: Remove objsize check in kmem_cache_flags()
There is no page->offset anymore and also no associated limit on the number
of objects. The page->offset field was removed for 2.6.24. So the check
in kmem_cache_flags() is now also obsolete (should have been dropped
earlier, somehow a hunk vanished).

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:30 -08:00
Christoph Lameter
d9acf4b7b6 slub: rename slab_objects to show_slab_objects
The sysfs callback is better named show_slab_objects since it is always
called from the xxx_show callbacks. We need the name for other purposes
later.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:30 -08:00
Christoph Lameter
a973e9dd1e Revert "unique end pointer" patch
This only made sense for the alternate fastpath which was reverted last week.

Mathieu is working on a new version that addresses the fastpath issues but that
new code first needs to go through mm and it is not clear if we need the
unique end pointers with his new scheme.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-03-03 12:22:30 -08:00
Christoph Lameter
27710bf6fe Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-03-03 11:18:08 -08:00
Linus Torvalds
cad226b8a7 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix freeing of page tables for ARM in free_pgd_slow
2008-03-03 10:47:52 -08:00
Randy Dunlap
7105a387a8 docbook: fix fusion source files
Fix docbook problems in fusion source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:47:14 -08:00
Randy Dunlap
0643245f59 docbook: fix kernel-api source files
Fix docbook problems in kernel-api.tmpl.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:47:14 -08:00
Randy Dunlap
d0bcabcd72 docbook: fix usb source files
Fix docbook problems in USB source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:47:14 -08:00
Randy Dunlap
e59e4a0972 docbook: fix scsi source file
Fix docbook problem in SCSI source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:47:13 -08:00
Randy Dunlap
7b089c8b90 docbook: fix rapidio source files
Fix docbook problems in rapidio source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:47:13 -08:00
Randy Dunlap
78a4a50a86 docbook: fix filesystems.tmpl source files
Fix docbook problems in filesystems.tmpl.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:47:13 -08:00
Linus Torvalds
64e6269071 Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: revert "x86: fix pmd_bad and pud_bad to support huge pages"
  x86: revert "x86: CPA: avoid split of alias mappings"
2008-03-03 10:36:50 -08:00
Linus Torvalds
5ce6386b90 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (24 commits)
  [POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages
  [POWERPC] Allow for different IOMMU page sizes in cell IOMMU code
  [POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE
  [POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately
  [POWERPC] Move allocation of cell IOMMU pad page
  [POWERPC] Remove unused pte_offset variable
  [POWERPC] Use it_offset not pte_offset in cell IOMMU code
  [POWERPC] Clearup cell IOMMU fixed mapping terminology
  [POWERPC] enable hardware watchpoints on cell blades
  [POWERPC] move celleb DABRX definitions
  [POWERPC] OProfile: enable callgraph support for Cell
  [POWERPC] spufs: fix use time accounting on SPE-overcommit
  [POWERPC] spufs: serialize SLB invalidation against SLB loading
  [POWERPC] spufs: invalidate SLB translation before adding a new entry
  [POWERPC] spufs: synchronize IRQ when disabling
  [POWERPC] spufs: fix order of sputrace thread IDs
  [POWERPC] Xilinx: hwicap cleanup
  [POWERPC] 4xx: Use correct board info structure in cuboot wrappers
  [POWERPC] spufs: fix invalid scheduling of forgotten contexts
  [POWERPC] 44x: add missing define TARGET_4xx and TARGET_440GX to cuboot-taishan
  ...
2008-03-03 10:35:38 -08:00
Linus Torvalds
a64e715fc7 Allow ARG_MAX execve string space even with a small stack limit
The new code that removed the limitation on the execve string size
(which was historically 32 pages) replaced it with a much softer limit
based on RLIMIT_STACK which is usually much larger than the traditional
limit.  See commit b6a2fea393 ("mm:
variable length argument support") for details.

However, if you have a small stack limit (perhaps because you need lots
of stacks in a threaded environment), the new heuristic of allowing up
to 1/4th of RLIMIT_STACK to be used for argument and environment strings
could actually be smaller than the old limit.

So just say that it's ok to have up to ARG_MAX strings regardless of the
value of RLIMIT_STACK, and check the rlimit only when going over that
traditional limit.

(Of course, if you actually have a *really* small stack limit, the whole
stack itself will be limited before you hit ARG_MAX, but that has always
been true and is clearly the right behaviour anyway).

Acked-by: Carlos O'Donell <carlos@codesourcery.com>
Cc: Michael Kerrisk <michael.kerrisk@googlemail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ollie Wild <aaw@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:12:14 -08:00
Linus Torvalds
a345b4ba20 Revert "x86: fix pmd_bad and pud_bad to support huge pages"
This reverts commit cded932b75.

Arjan bisected down a boot-time hang to this, saying:
  ".. it prevents the kernel to finish booting on my (Penryn based)
   laptop.  The boot stops right after freeing the init memory."

and while it's not clear exactly what triggers it, at this stage we're
better off just reverting it while Ingo tries to figure out what went
wrong.

Requested-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: Nish Aravamudan <nish.aravamudan@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-03 10:02:44 -08:00
Ingo Molnar
902955fc13 x86: revert "x86: fix pmd_bad and pud_bad to support huge pages"
revert commit cded932b75,
"x86: fix pmd_bad and pud_bad to support huge pages", it causes
a bootup hang, as reported and bisected by Arjan van de Ven.

Bisected-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-03 14:18:27 +01:00
Rafael J. Wysocki
9b5cf48b06 x86: revert "x86: CPA: avoid split of alias mappings"
Revert:

  commit 8be8f54bae
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Sat Feb 23 20:43:21 2008 +0100

      x86: CPA: avoid split of alias mappings

because it clearly mishandles the case when __change_page_attr(), called
from __change_page_attr_set_clr(), changes cpa->processed to 1 and
cpa_process_alias(cpa) is executed right after that.

This crashes my x86-64 test box early in the boot process
(ref. http://bugzilla.kernel.org/show_bug.cgi?id=10140#c4).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-03 14:18:27 +01:00
Paul Mackerras
3cecdda3f1 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into merge 2008-03-03 21:31:09 +11:00
Joerg Roedel
c7ac679c16 KVM: emulate access to MSR_IA32_MCG_CTL
Injecting an GP when accessing this MSR lets Windows crash when running some
stress test tools in KVM.  So this patch emulates access to this MSR.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:22:37 +02:00
Avi Kivity
674eea0fc4 KVM: Make the supported cpuid list a host property rather than a vm property
One of the use cases for the supported cpuid list is to create a "greatest
common denominator" of cpu capabilities in a server farm.  As such, it is
useful to be able to get the list without creating a virtual machine first.

Since the code does not depend on the vm in any way, all that is needed is
to move it to the device ioctl handler.  The capability identifier is also
changed so that binaries made against -rc1 will fail gracefully.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:22:25 +02:00